16 citations · 20 across the 7 of their papers we have counts for
7 papers
Time-resolved leptonic modeling of the prompt emission of GRB 211211A
Maria Petropoulou, Maria Gkoni, Konstantinos Xyloportas +3
GRB 211211A is a long duration gamma-ray burst with a compact object merger origin. In this work, we model the time-resolved prompt-emission spectra of GRB 211211A within a leptoni…
Delayed Radio Flares in Neutrino-associated Blazars: The Case of TXS 0506+056
S. I. Stathopoulos, C. Yuan, G. Vasilopoulos +4
Radio flares have been postulated to be associated with the production of astrophysical neutrinos. For example, TXS 0506+056 exhibits a 2-3 yr delay between the 2017 IceCube-170922…
The Advanced X-ray Imaging Satellite (AXIS) Community Science Book
Michael Koss, Nafisa Aftab, Steven W. Allen +395
The AXIS Community Science Book represents the collective effort of 592 scientists worldwide to define the transformative science enabled by the Advanced X-ray Imaging Satellite (A…
Accelerating SED Modeling of Astrophysical Objects Using Neural Networks
Federico Testagrossa, Georgios Vasilopoulos, Despina Karavola +4
Interpreting the spectral energy distributions (SEDs) of astrophysical objects with physically motivated models is computationally expensive. These models require solving coupled d…
Black-hole mass estimation through accretion disk spectral fitting for high-redshift blazars
G. Kyriopoulos, M. Petropoulou, G. Vasilopoulos +1
High-redshift () blazars, with relativistic jets aligned toward us, probe the most powerful end of the active galactic nuclei (AGN) population. We aim at determining the black…
Particle acceleration and multi-messenger radiation from Ultra-Luminous X-ray Sources: A new class of Galactic PeVatrons
Enrico Peretti, Maria Petropoulou, Georgios Vasilopoulos +1
Super-Eddington accretion onto stellar-mass compact objects powers fast outflows in ultra-luminous X-ray sources (ULXs). Such outflows, which can reach mildly relativistic velociti…
Application of neural networks to synchro-Compton blazar emission models
A. Tzavellas, G. Vasilopoulos, M. Petropoulou +2
Jets from supermassive black holes in the centers of active galaxies are the most powerful persistent sources of electromagnetic radiation in the Universe. To infer the physical co…