27th Young Scientists' Conference on Astronomy and Space Physics

Session

High energy astrophysics

26 Apr 2021, 18:00

https://us02web.zoom.us/j/2709113918?pwd=ZnIyUml2VEN6YnkvSi90eTlwUzNLUT09

Conveners

High energy astrophysics

• Pavlo Plotko (DESY)

1. Using multi-messenger observations to study high-energy particle dynamics in our Universe

Ms Nahee Park (Queen's University, Kingston Ontario K7L3N6, Canada)

26/04/2021, 18:00

Cosmic-ray, neutrino, and gamma-ray observations combined with traditional electromagnetic wave observations provide a unique and powerful tool to explore how particles get accelerated and propagated in our Universe. This overview presentation will highlight recent results and future expectations using these multi-messenger observations to study extreme environments throughout the cosmos.

2. The curvature emission model of peculiar isolated neutron star 2XMM J104608.7-594306. (12+3)

Ms Natia Kevlishvili (Institute of Theoretical Physics, Ilia State University, Tbilisi, Georgia)

26/04/2021, 19:05

We construct non-thermal emission theory, interpreting the observational properties of a newly discovered pulsar 2XMM J104608.7-594306 in X-rays that is believed to be thermally emitting isolated neutron star. A different approach of curvature emission scenario is considered, giving the spectral energy distribution that is in a good agreement with the XMM-Newton observational data, which can...

3. X-ray analysis of the structure of relativistic AGN jets of Cygnus A (12+3)

Ms Yelyzaveta Zhyhaniuk (Taras Shevchenko National University of Kyiv, Kyiv, Ukraine)

26/04/2021, 19:25

Cygnus A is a giant elliptical galaxy, one of the most powerful radio galaxy. Like other radio galaxies, its activity is determined by active galactic nucleus (AGN) - supermassive black hole, surrounded by accretion disk, and with two relativistic jets, diverging in opposite directions from the supermassive black hole. We investigate the two hotspots - A and B - at the end of the eastern...

4. Investigation of the detectability of gamma-ray bright GRBs with future neutrino observatories (12+3)

Ms Oleksandra Ostapenko (Taras Shevchenko National University of Kyiv, Kyiv, Ukraine)

26/04/2021, 19:45

Gamma-ray bursts are thought to be accelerators of cosmic rays and a source of high-energy astrophysical neutrinos. Nevertheless, none of previous GRBs researches have shown a correlation between particular events and high-energy neutrinos. In the light of the first detection of TeV gamma-ray emission from GRB190114C, our goal is to explore the possibility of detecting the neutrino fluxes...

5. Prospects for gamma-ray observations of Hercules cluster (12+3)

Mr Vadym Voitsekhovskyi (Kyiv National University of Taras Shevchenko, Kyiv, Ukraine)

26/04/2021, 20:05

Galaxy clusters (GCs) are the largest and most massive gravitationally bound objects in the large-scale
structure of the Universe. Due to keV temperatures of virialized gas in the intracluster medium (ICM) and presence of cosmic rays (CRs), GCs are effective sources of thermal X-ray radiation and non-thermal leptonic (synchrotron) radio emission. GCs are also store-rooms for hadronic CRs, but...

6. Analysis of The Magnetic CV IGR J15038–6021 (12+3)

Ms Snehaa Ganesh Kumar (University of California, Berkeley, United States)

26/04/2021, 20:25

IGR J15038–6021 is a Galactic X-ray source known to have an iron emission line and a hard X-ray spectrum. Here, we report on X-ray observations of the source withXMM-Newton and NuSTAR. Timing analysis of the XMM data shows a significant detection of 1646s period. The signal has a pulsed fraction of 22 in the 0.3–12 keV range. The X-ray spectrum is consistent with the continuum emission...