High Energy Astrophysics and Cosmology in the era of all-sky surveys

Session

AGN, blazars and jets

17 Jun 2026, 11:00

74. Relativistic jets: new insights on the jet physics from formation to energy dissipation

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...

19. Optical-ɣ-Ray Correlations in Blazars from Time-Domain Surveys

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...

78. Quasi-Periodic Signatures of a High-Redshift Intermediate Mass Black Hole

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....

47. Blazar jet dynamics and neutrino production

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...

8. Possible extensions to the RL/RQ AGN dichotomy

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...