340 citations · 550 across the 7 of their papers we have counts for
9 papers
Pair echo model of CTAO/LST-1 signal from GRB 221009A
Andrii Neronov, Ievgen Vovk, Teneman Keita +1
Interactions of very-high energy gamma-rays during their propagation through the intergalactic medium result in a delayed secondary ``pair echo'' signal. Detection of such pair ech…
AI's Capability in Assisting Scientific Research in Physics, Astrophysics, and Cosmology II: Project Planning and Proposal Evaluation
Jia Liu, Veena Krishnaraj, Kateryna Vovk +18
We investigate how well large language models (LLMs) can assist scientific project planning and proposal evaluation. One-page project plans were independently generated for eight e…
AI's Capability in Assisting Scientific Research in Physics, Astrophysics, and Cosmology I: Literature Review
Anamaria Hell, Kateryna Vovk, Veena Krishnaraj +18
We investigate how well large language models (LLMs) can assist with literature reviews for scientific research. We perform a controlled study of eight expert-conceived research pr…
Intergalactic magnetic field lower limits up to the redshift
Ievgen Vovk
Large-scale intergalactic magnetic fields may contain a mixture of galactic and cosmogenic contributions, that can be probed via observations of -ray "echo" - a delayed emission…
Marginal Role of the Electrostatic Instability in the GeV-scale Cascade Flux from 1ES 0229+200
Mahmoud Alawashra, Ievgen Vovk, Martin Pohl
Relativistic pair beams produced in the intergalactic medium (IGM) by TeV gamma rays from blazars are expected to generate a detectable GeV-scale electromagnetic cascade, yet this…
Variability of gamma-ray emission from blazars on the black hole timescales
Ievgen Vovk, Andrii Neronov
We investigate the variability properties of blazars in the GeV band using the data of the Fermi/LAT telescope. We find that blazars exhibit variability on the scales down to the m…
Fermi/LAT observations of 1ES 0229+200: implications for extragalactic magnetic fields and background light
Ievgen Vovk, Andrew M. Taylor, Dmitri Semikoz +1
We report the observation in the GeV band of the blazar 1ES 0229+200, which over recent years has become one the primary sources used to put constraints on the Extragalactic Backgr…
EGMF Constraints from Simultaneous GeV-TeV Observations of Blazars
A. M. Taylor, I. Vovk, A. Neronov
Attenuation of the TeV gamma-ray flux from distant blazars through pair production with extragalactic background light leads to the development of electromagnetic cascades and subs…
High Galactic latitude Fermi sources of gamma-rays with energies above 100 GeV
A. Neronov, D. V. Semikoz, Ie. Vovk
We present a catalog of sources of very high energy (E>100 GeV) gamma-rays detected by the Large Area Telescope (LAT) onboard the Fermi Gamma-Ray Space Telescope at Galactic latitu…