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William Brandt (Penn State University)15/06/2026, 09:10
Extragalactic X-ray surveys have transformed our view of the high-energy universe, revealing the populations that produce the cosmic X-ray background (CXRB) and reshaping our understanding of black-hole growth and cosmic structure. I will review what X-ray surveys and their multiwavelength follow-up have uncovered about these populations over the past 27 years, drawing on results from missions...
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Prof. Marat Gilfanov15/06/2026, 09:40
After more than two years of scanning the sky during 2019--2022 the eROSITA X-ray telescope aboard SRG orbital observatory produced the best ever X-ray maps of the sky and discovered more than three million X-ray sources, of which about 20\% are stars with active coronas in the Milky Way, and most of the rest are galaxies with active nuclei, quasars and clusters of galaxies. eROSITA detected...
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Dr Miriam E. Ramos-Ceja (Max Planck Institute for extraterrestrial Physics)15/06/2026, 10:10
The eROSITA (extended ROentgen Survey with an Imaging Telescope Array) instrument aboard the Spektrum-Roentgen-Gamma (SRG) mission has significantly expanded the horizon of X-ray astronomy, delivering unprecedented legacy samples through its high sensitivity, wide field of view, and survey efficiency. These capabilities have enabled major advances in our understanding of growing supermassive...
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Alexander Lutovinov15/06/2026, 11:20
The Mikhail Pavlinsky ART-XC onboard the Spektr-Roentgen-Gamma (SRG) Observatory has been successfully operating in orbit since 2019. During this time, it conducted eight all sky surveys, as well as a significant number of observations of the most interesting regions and objects of the Universe. In our the overview of the ART-XC results of all sky and Milke Way surveys, particular attention...
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Yi Zhang (MPA)15/06/2026, 11:50
Studying the distribution and properties of hot gas around galaxies (hot CGM) helps constrain galaxy evolution models, but its observation is challenging. The first four SRG/eROSITA all-sky surveys (eRASS:4) allow us to detect the hot CGM by stacking a large sample of galaxies. In this talk, I will present the results we obtained: 1) X-ray surface brightness profiles and baryon budget of the...
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Sergey Molkov15/06/2026, 12:10
We will present an overview of observations of rapidly rotating neutron stars
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by the Pavlinsky ART-XC telescope on-board SRG mission. Despite the fact that
the telescope was designed for scanning large areas of the sky, its detectors
have a good time resolution (≈ 23 microseconds), and the onboard clock is
stable enough, which makes it possible to perform timing analysis of... -
Rashid Sunyaev15/06/2026, 14:30
SRG/eROSITA and microwave observations of clusters of galaxies
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Prof. Yongquan Xue (University of Science and Technology of China)15/06/2026, 15:00
Wide Field Survey Telescope (WFST) is the largest time-domain survey facility in the northern hemisphere. The telescope is a dedicated photometric surveying facility being built jointly by the University of Science and Technology of China (USTC) and the Purple Mountain Observatory (PMO). It is equipped with a 2.5-meter diameter primary mirror, an active optics system, and a mosaic CCD camera...
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Felix Mirabel15/06/2026, 15:30
The radio emission from Microquasars (MQs), Little Red Dots (LRDs) and Active Galactic Nuclei (AGN) is crucial to gain insight into the mass accretion, relativistic jets and feedback of black holes (BHs) in these astronomical objects. Based on archived radio monitoring data and the VLASS and FIRST sky surveys of the National Radio Observatory (NRAO), were obtain the following...
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Prof. Narek Sahakyan (ICRANET-Armenia IO)15/06/2026, 16:30
Astrophysics is entering a data-rich era driven by multi-wavelength observatories and multi-messenger experiments. These facilities produce vast, heterogeneous datasets that challenge traditional analysis pipelines. General-purpose AI systems, while powerful, often lack the contextual reasoning and scientific rigor required for astrophysical interpretation. AstroGenesis is an AI-powered,...
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Yu WANG (ICRA / ICRANet)15/06/2026, 17:00
Both the Galactic Center and little red dots (LRDs) host million-solar-mass black holes within dense, cold reservoirs of molecules associated with dust grains, and are electromagnetically tranquil. These conditions enable complex molecular chemistry and may serve as natural laboratories for prebiotic genetic evolution by allowing the synthesis of organic molecules essential for life.
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Fiona Redmen (Universitat Autonoma de Barcelona)15/06/2026, 17:20
Geometric constraints on inner regions of active galactic nuclei (AGN) are crucial for uncovering the behaviour of matter in extreme gravitational environments and thus for providing tests of general relativity. A time lag between different energy bands occurs due to the different path lengths for photons which have travelled directly to us after being Compton up-scattered in the corona, and...
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Grigorii Uskov (Space Research Institute of Russian Academy of Sciences (IKI))15/06/2026, 17:40
We report on a detailed study of a luminous, heavily obscured ($N_{\rm H}\sim2\times 10^{23}$ cm$^{-2}$), radio-loud quasar SRGAJ230631.0+155633, discovered by the SRG/ART-XC telescope, which is located at $z=0.4389$ and is a type 2 AGN. We combine radio-to-X-ray data, including near-simultaneous ART-XC and Swift/XRT observations conducted in June 2023. During these follow-up observations, the...
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Massimo Della Valle (INAF-Capodimnonte, Naples)16/06/2026, 09:00
The study of transient phenomena in a multimessenger framework will remain a major driver of astrophysical discovery in the coming decades. Supernovae, Kilonovae, compact-object formation, Novae, Gamma-ray Bursts, and tidal disruption events connect electromagnetic emission with gravitational waves and neutrinos. The key physics unfolds within minutes to hours, yet most surveys return to the...
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Luca Izzo (INAF/OACN)16/06/2026, 09:30
The Euclid mission, though primarily designed for cosmology, offers wide-field, high-resolution, deep, multi-wavelength imaging that makes it a powerful asset for time-domain astronomy.
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While its observing strategy is not optimized for transient searches, several fields are revisited multiple times over the mission lifetime.
In these regions, difference imaging enables the discovery of... -
Pavel Abolmasov (Tel Aviv University)16/06/2026, 10:00
Tidal disruptions of stars by supermassive black holes in galactic centers (TDEs) are now being actively studied both theoretically and observationally. They are observed throughout the electromagnetic spectrum, from radio to gamma-rays. It is still unclear how the emission is produced and, in particular, what is the role of the magnetic field of the disrupted star. There are many ways how...
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Demetrio Magrin (INAF - Osservatorio Astronomico di Padova)16/06/2026, 10:20
Time-domain and multimessenger astronomy are entering a new observational regime in which rapid and continuous monitoring of large sky areas becomes essential for the detection and characterization of electromagnetic counterparts of gravitational waves, neutrinos, gamma-ray bursts, fast radio bursts, and other transient phenomena. Traditional wide-field surveys typically rely on sequential sky...
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Antonio Stamerra (INAF-OAR)16/06/2026, 11:20
The most energetic gamma-ray sky, spanning the TeV to PeV domain, has recently revealed a complex landscape of galactic sources, including Pevatrons, microquasars, dark accelerators, and extragalactic transients, offering new insights while posing significant challenges for understanding the non-thermal Universe. These challenges require new instruments capable of resolving complex...
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Roland Walter (University of Geneva)16/06/2026, 11:50
The quantum properties of a gas of bosons were predicted by Einstein 100 years ago. The first experimental evidence of its consequences were obtained by Hanbury-Brown & Twiss in 1954, correlating the arrival times of photons detected by two optical telescopes. Extremely large telescopes and 10ps resolution single photon detectors bring the key improvements to reach, in the optical, angular...
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Prof. Michele Doro (University of Padova)16/06/2026, 12:20
The Cherenkov Telescope Array Observatory (CTAO) will be the next-generation facility for very-high-energy gamma-ray astronomy, covering the energy range from ~20 GeV to 300 TeV with sensitivity at least an order of magnitude beyond current instruments. As the first open, proposal-driven gamma-ray observatory, with stations in La Palma (North) and near Paranal (South), CTAO will deliver...
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Prof. James Aird (University of Edinburgh)16/06/2026, 14:50
NewAthena will be the European Space Agency’s next large X-ray observatory. It will have revolutionary capabilities enabled by the combination of a large collecting-area mirror, a high-resolution spatially resolved X-ray integral-field spectrometer, and a wide-field X-ray imager. This next-generation observatory will thus enable transformational progress across all areas of astrophysics....
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Hua Feng (Institute of High Energy Physics)16/06/2026, 15:20
The enhanced X-ray Timing and Polarimetry (eXTP) mission is a flagship X-ray observatory designed to probe fundamental physics and astrophysics under extreme conditions. Combining high-throughput spectroscopy, high-resolution timing, and sensitive polarimetry, eXTP aims to constrain the equation of state of matter at supra-nuclear densities, detect quantum electrodynamics (QED) effects, and...
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Leandro Silveri (New York University Abu Dhabi)16/06/2026, 15:50
NUSES is a satellite mission composed by two scientific payloads: Terzina and Zirè.
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Zirè is conceived to perform measurements of electrons, protons and light nuclei up to hundreds of MeV as well as gamma-rays in the energy range between 0.1-30 MeV. Its Low-Energy Module can detect charged particles with energy as low as hundreds of keV. Scientific goals for this payload feature low-energy... -
Roman Krivonos (Space Research Institute (IKI), Moscow, Russia)16/06/2026, 16:40
In my talk I will review our recent results related to the X-ray emission from the Galactic Center region, especially, the non-thermal emission of the Arches stellar cluster as observed with XMM-Newton and Chandra.
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Valentin Nezabudkin (Space Research Institute, MIPT)16/06/2026, 17:10
Recent studies based on XMM-Newton and SRG/ART-XC observations have reported an excess of X-ray emission per unit stellar mass in the Nuclear Stellar Disk (NSD) compared to regions farther from the Galactic Center. These results are based on hard X-ray measurements (4-12 keV) and studies of the Fe XXV emission line at 6.7 keV. In this work, we investigate the population of faint X-ray...
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Andrey Mukhin (IKI RAS)16/06/2026, 17:30
Likelihood function-based methods are a theoretically optimal way of detecting sources. They maximize the use of all available information about the telescope and expected spectral information about the source.
In this talk, we describe how this new method was set up and applied to the Chandra's Deep Field South, a unique X-ray dataset with its record 7 Ms exposure and sub-arcsec spatial...
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Yasmin Nehme (Max Planck for astrophysics)16/06/2026, 17:50
The Pleiades open cluster was observed in multiple eROSITA all-sky survey passes, each separated by roughly six months, providing a sample of young low-mass stars with X-ray light curves. Starting from the catalogue of 850 SRG/eROSITA sources associated with Pleiades stars from Khamitov et al. (2024), we developed a flare-detection pipeline that estimates a per-survey persistent rate by...
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Iuliia Kliain (Space Research Institute (IKI) RAS, Higher School of Economics)16/06/2026, 17:55
Some accreting neutron stars in massive and low-mass X-ray binaries exhibit flaring activity. The flares are accompanied by changes in spectra, pulsation profiles, and the long-term luminosity of the system. The flares themselves vary in duration and peak luminosity. Different flares have different origins; however, in many cases, the nature of the flares is unknown. In this work, we describe...
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Vahe' Petrosian (Stanford University)17/06/2026, 09:00
Formation rate (FR) history of extragalactic sources provide crucial information on how the universe emerged from the dark ages to its current stage. Best observed FR is that of stars (SFR) that rises from high redshifts to redshift of ~3 and declines to today. Active galactic nuclei (AGNs) show a similar trend but with different parameters. Transient sources like gamma-ray bursts (GRBs), and...
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Remo Ruffini17/06/2026, 09:30
We investigate GRB 220101A provides , the first of a new family of long GRBs exceeding a total energy of 10^54 erg, within a newly modified BdHN model. Its exceptional luminosity is explained by a pair-supernova triggering the event, followed after ∼ 7 minutes by an induced core-collapse supernova. What makes GRB 220101A so exceptional is: (1) its redshift z = 4.61, and (2) the high-quality...
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Evgeny Derishev (Institute of Applied Physics RAS)17/06/2026, 10:00
Recent observations of several Gamma-Ray Burst (GRB) afterglows in the TeV domain have profoundly impacted the theory of particle acceleration and radiation in relativistic shocks. We can now confidently state that the Synchrotron-Self-Compton (SSC) model for afterglow emission has successfully passed experimental verification. Furthermore, simultaneous multi-wavelength observations --...
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Prof. Omer bromberg (Tel Aviv university)17/06/2026, 11:00
Over the past decade, major advances in both observations and numerical simulations have transformed our understanding of relativistic jets in astrophysical systems. In this talk I will review the recent progress in jet physics, focusing on the launching process, jet propagation and energy dissipation. I will discuss the role of magnetic fields in the jet evolution from field amplification and...
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Julian HAMO (IJCLab - Université Paris-Saclay)17/06/2026, 11:30
Blazars are among the most variable non-thermal sources in the Universe, exhibiting broadband emission from radio to $\gamma$-rays. With the new era of large-scale surveys such as the Vera C. Rubin Observatory, their optical variability can now be regularly monitored with unprecedented depth, paving the way to probe their emission mechanisms in a time-domain, multi-wavelength context.
In...
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Ekaterina Koptelova (Graduate Institute of Astronomy, NCU)17/06/2026, 11:45
High-frequency quasi-periodic oscillations (QPOs) in black hole X-ray binaries, typically in the 60–450 Hz range, are associated with processes near the innermost stable circular orbit and scale directly with black hole mass. For supermassive black holes, analogous oscillations are expected in the sub-millihertz regime and were first detected in the narrow-line Seyfert 1 galaxy RE J1034+396....
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maurice van putten (Sejong University)18/06/2026, 09:00
Identifying the central engine of core-collapse supernovae (CC-SNe) is key objective in observational astronomy. This may be unveiled by gravitational wave emission, complementary to EM and neutrinos, that may break the degeneracy between neutron stars and black holes. Through illustrative case studies, we demonstrate the discovery potential of this approach with current-generation GW...
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Maryam Aghaei Abchouyeh18/06/2026, 09:30
The progenitor mass and central engine of a core-collapse supernova (CC-SNe) continue to be a mystery despite the modern surveys of the transient universe. A multi-messenger approach including both EM and gravitational-waves, however, provides a unique window to break the degeneracy between a newly born neutron star and black hole central engines of CC-SNe. Considering the 160Mpc horizon...
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Dr Martin LEMOINE (APC (CNRS - U. Paris Cite))18/06/2026, 09:55
The annoucement by the IceCube collaboration of a 4.2σ excess of high-energy neutrinos (1–10 TeV) spatially associated with the Seyfert 2 galaxy NGC 1068 marked a breakthrough in multi-messenger astrophysics. Recent evidence also suggests correlations with other Seyfert galaxies (e.g., NGC 4151, NGC 7469), indicating non-jetted active galactic nuclei (AGN) as significant contributors to the...
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SHURUI ZHANG (ICRANet)18/06/2026, 10:25
Compact objects or stars in nuclear clusters can interact with AGN disks during their motion, exchanging energy and angular momentum, and eventually settling into disk-plane motion. Additionally, the outer regions of AGN disks may undergo gravitational collapse, forming stars that evolve into compact objects and migrate inward. By studying the accretion and dynamics of various compact objects...
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Sergey Troitsky (Institute for Nuclear Research, Russian Academy of Sciences (RU))18/06/2026, 11:15
The detection by the KM3NeT experiment of a neutrino with a record-breaking energy of 220 PeV represents a major milestone in neutrino astrophysics. I will review the broader implications of this observation in a full-sky context, including its combination with data from other experiments, searches for the potential source of this event and population studies of similar astrophysical objects,...
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Dr Razmik Mirzoyan18/06/2026, 11:45
In this report, we would like to present some interesting recent results and developments in ground-based gamma-ray and cosmic-ray astrophysics, using the MAGIC IACT and some other well-known detectors as examples. Measuring Cherenkov light from air showers has become a standard, highly sensitive method for investigating sources in the energy range from a few tens of GeV to 100 TeV. The...
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Lea Heckmann (APC, CNRS/IN2P3 - Université de Paris Cité)18/06/2026, 12:15
Very-high-energy (VHE) gamma rays provide a unique window on the most extreme astrophysical environments and are a key probe of potential multi‑messenger sources. To fully exploit this potential, the Cherenkov Telescope Array Observatory (CTAO) is being built as the next‑generation facility for VHE gamma‑ray astronomy, offering an order‑of‑magnitude improvement in sensitivity, a wide energy...
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Mikhail Kuznetsov (INR RAS)18/06/2026, 12:45
Ultra-high energy cosmic rays (UHECR) are charged particles, with energies greater than 1 EeV that are reaching the Earth from space. The origin of UHECR and their nature remain unknown. In this talk I will discuss the studies of distribution of UHECR arrival directions over the sky in search for their sources, that are expected to be extragalactic. I will also discuss the method of estimation...
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Polina Kivokurtseva (INR RAS)18/06/2026, 15:00
Recent studies indicate the connection between the detection of high-energy neutrinos from blazars and beaming of their relativistic jets, suggesting that the jets are the sites of the neutrino production. Detailed studies of the jet structure and dynamics, made possible by means of very-long-baseline radio interferometry (VLBI), shed light on the localization of the neutrino-emitting zone and...
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20. X- and gamma-ray radiation from the high-temperature plasma and spectra of accreting black holesSergei Grebenev (Space Research Institute)18/06/2026, 15:15
We present our numerical computations of broadband radiation spectra formed in a layer of high-temperature ($kT_{e}\sim 50$ keV) semitransparent plasma (with a Thomson optical depth of $\tau_{T}\sim 1-3$) with an electron number density of $N_{e}\sim 10^{17}-10^{19}\ \mbox{cm}^{-3}$, characteristic of the accretion disk regions surrounding a black hole in X-ray binaries. The computations take...
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Hayk Hakobyan (Flatiron Institute)18/06/2026, 15:40
Relativistic plasma astrophysics has undergone rapid development in recent years, driven by increasingly sophisticated observations and large-scale, high-fidelity numerical simulations. These advances have shed new light on a range of phenomena, including the broadband emission mechanisms of neutron star magnetospheres and the accretion flows and relativistic jets in both stellar-mass and...
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Junjie Mao18/06/2026, 16:35
The Einstein Probe Wide-Field X-ray Telescope (WXT), leveraging lobster-eye optics, rejuvenates the soft X-ray imaging all-sky survey. We present the first EP-WXT narrow-band maps and hardness ratio maps, where a global anti-correlation between soft X-ray and HI emission is evident. We highlight intriguing diffuse soft X-ray emission features shaping the formation and evolution of the Milky...
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Prof. Adi Nusser18/06/2026, 17:05
Upcoming and ongoing cosmological surveys, such as Euclid and DESI, are mapping the distribution of tens of millions of galaxies across cosmic time. These data sets will provide unprecedented opportunities to constrain the fundamental physical theory governing the Universe, including the nature of gravity, dark matter and dark energy. To fully exploit this potential, however, one must...
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Lucas Gréaux (Ruhr Universität Bochum)18/06/2026, 17:35
The extragalactic background light (EBL) encodes the signature of galaxy evolution and photon production history since the epoch of reionization. The optical and infrared photons that dominate the EBL can interact with 𝛾-rays above a certain energy threshold to create e+/e- pairs, leading to absorption imprints seen in the very-high energy (VHE; E > 100 GeV) spectra of extragalactic sources....
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Dr Marek Nikołajuk (University of Bialystok, Faculty of Physics)18/06/2026, 17:50
We investigate the tidal stripping of a cold helium white dwarf (WD) by a stellar-mass black hole (BH). Owing to the degenerate nature of the WD, quantum effects are expected to play a significant role in the dynamics. To capture these effects, we employ a full quantum hydrodynamic framework to simulate the formation of the accretion disk. The WD is modelled as a Bose–Fermi droplet composed of...
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Giorgio Matt (Roma Tre University)19/06/2026, 09:00
The launch of the Imaging X-ray Polarimetry Explorer (IXPE) on December 2021 (re)opened the window of X-ray polarimetry. In its first 4.5 years of operation IXPE observed objects belonging to almost all classes of X-ray sources, with a wealth of interesting and often surprising results. In this talk I will provide a (inevitably biased) review of IXPE results, and briefly discuss possible...
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Alessandro Di Marco (INAF - IAPS)19/06/2026, 09:30
X-ray timing and broadband spectroscopy have been the main methods for studying the rich and complex phenomenology of neutron stars with weak magnetic fields for a long time. Nowadays, X-ray polarimetry offers the missing, independent set of observables that are directly relevant to comprehending the geometry and nature of the emission regions: polarization degree and angle. This allows for...
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Alexandra Veledina (University of Turku)19/06/2026, 10:00
The advent of X-ray polarimetry has opened a new observational window into the accretion physics of compact objects. Observations with the Imaging X-ray Polarimetry Explorer (IXPE) provide unique constraints on the geometry and physical conditions of emission regions in black hole X-ray binaries. However, the first polarimetric results have raised new challenges for existing accretion models....
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Dr Sergey Tsygankov (University of Turku)19/06/2026, 11:00
X-ray polarimetry has recently opened a new observational window on accreting neutron stars, enabling direct measurements of the polarization properties of radiation formed in ultra-strong magnetic fields. The first systematic observations of X-ray pulsars with IXPE have provided phase-resolved measurements of polarization degree and angle, allowing direct constraints on the geometric...
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Andrzej Niedzwiecki (University of Lodz)19/06/2026, 11:30
I will discuss the current paradigm for the innermost regions of black hole accretion flows in light of constraints from X-ray spectroscopy. The main spectral components observed in luminous accretion states will be outlined, highlighting how their modeling has led to a broad picture of the radiative and dynamical processes operating in the vicinity of the black hole horizon. Despite this...
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SHU ZHANG (INSTITUTE OF HIGH ENERGY PHYSICS,BEIJING,CHINA)19/06/2026, 12:00
Insight-HXMT is the first Chinese X-ray astronomy satellite and was launched to a 550 km orbit on 15th June 2017. The Insight-HXMT consists of three collimated telescopes HE (20-250keV), ME (5-30 keV) and LE (1-15 keV), and is characterized by a broadband energy coverage, where at above 20 keV it has a large detection area and, at below 3 keV it has good energy/time resolution and is free from...
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Mikhail Belvedersky (IKI RAS)19/06/2026, 14:30
We describe a population of AGNs with extremely hard spectra found among the sources registered by SRG/eROSITA on the Eastern Galactic hemisphere. Such spectra cannot be explained by inverse Compton scattering typical of “normal” AGNs, but can be produced by the X-ray emission reflected from a dusty torus, indicating significant obscuration (up to the Compton-thick regime). We developed a...
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Laetitia Gibaud (Faculty of Physics, University of Bialystok)19/06/2026, 14:50
Weak-emission-line quasars (WLQs) represent an extreme subclass of active galactic nuclei (AGNs), displaying unusually faint or absent emission lines despite luminous quasar-like continua. The source SDSS J101353.45+492758.1 is a particularly striking example, characterized by a nearly lineless UV–optical spectrum and a pronounced X-ray weakness.
We first analyze its broadband spectral...
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Sergey Prokhorenko (Space Research Institute of the Russian Academy of Sciences (IKI))19/06/2026, 15:10
The statistical analysis of the relationship between ultraviolet (UV) and X-ray emission from active galactic nuclei (AGN) allows for a better understanding of the processes occurring during accretion of matter onto a supermassive black hole in the center of AGN, and also tests the possibility of using quasars as "standard candles" for measuring distances on cosmological scales in the...
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Aleksei Sokolov (IKI RAS)19/06/2026, 15:30
We present the results of our analysis of the X-ray spectra of a large subsample of active galactic nuclei (AGN) from the catalog of sources detected by the Mikhail Pavlinsky ART-XC telescope aboard the SRG orbital observatory during its all-sky survey (ARTSS1-5). The analysis is based on archival observations with the Swift/XRT telescope in the 1–10 keV energy range. For all sources, we...
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Georgii Ponomarev19/06/2026, 16:05
Galactic pulsar wind nebulae are suitable targets for studying relativistic plasmas because they radiate in all energy ranges, and a number of PWNe are close enough that their spectra, dynamics and morphology can be resolved in great detail. Pulsar wind nebulae often exhibit a jet-torus morphology in X-rays, unless distorted by very strong external flow. Typically, nebulae form a single...
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Arsenii Istomin (Moscow Institute of Physics and Technology, Lebedev Physical Institute)19/06/2026, 16:30
Using the data from FAST and MeerKAT radio telescope surveys, we carried out a detailed statistical analysis of the distributions of the observed widths of mean radio pulsar profiles. The availability of the high-quality polarization data made it possible to separately consider mean profiles formed by the ordinary (O) and extraordinary (X) orthogonal polarization modes. We performed an...
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Fedor Kniazev (Moscow Institute of Physics and Technology, Lebedev Physical Institute)19/06/2026, 16:50
New surveys by the FAST and MeerKAT observatories have enabled, for the first time, a robust statistical study of orthogonal pulsars using large homogeneous samples. These objects, with magnetic axis nearly perpendicular to the rotation axis, are particularly sensitive to magnetospheric physics and serve as a key test for neutron star evolution models. We show that the statistical properties...
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Fiona Redmen (Universitat Autonoma de Barcelona)
Physical constraints on accretion in extreme gravitational environments can be provided through the spectral fitting of Black hole X-ray binaries. Traditional methods of spectral fitting are limited by intractable computation times. We apply machine learning methods to expedite the spectral fitting of thousands of spectra collected by NICER. Specifically, we use a probabilistic approach,...
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Lucas Gréaux (Ruhr Universität Bochum)
When propagating through the universe, gamma rays at very-high energy (VHE, E > 100 GeV) and ultra-high energy cosmic rays (UHECR) can interact with the optical to microwave photon fields that permeate the cosmic voids. These interactions result in a characteristic absorption imprint in the spectra of extragalactic gamma-rays sources at VHE, and in a change in mass-composition of the observed...
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Prof. Ilfan Bikmaev (Academy of Sciences of Tatarstan, Kazan Federal University, Kazan, Russia)
In the report we will provide an overview of the ground based observations of SRG / eROSITA X-ray sources by using 1.5-meter RTT-150 optical telescope within the several programs of optical identifications various types of galactic and extragalactic sources. Additionally, the results of a study of the parameters of cool stars with X-ray coronal activity in the nearest open clusters...
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Elena Fedorova (INAF-OAR)
Since its discovery, the quasars/AGN are known to belong to one of two subclasses: radio-loud (RL), associated with powerful large-scale subluminal jet structures, or radio-quiet (RQ), known as devoid of such structures. Nowadays knowledge about the jets in AGN is significantly more variegated and need to be systematized taking into account the level and variability of the radio emission and...
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Prof. Subhabrata Majumdar
A novel secondary CMB anisotropy, the non-thermal Sunyaev-Zel’dovich (nthSZ) distortions of the CMB sourced by radio galaxies, opens up a new window to radio-galaxy physics and cosmology. We show how relativistic, non-thermal electrons in radio galaxy lobes imprint distinctive signatures on the cosmic microwave background via the non-thermal Sunyaev–Zel’dovich (nthSZ) effect, using a...
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