Publications (9)
To the search for observational evidence of wormholes
Alexei Pozanenko, Alexander Shatskiy
We consider observational properties of gamma-ray bursts (GRB) transmitted by hypothetical wormholes (WH). Such burst would be observable as repeating source, analogous to Soft Gam…
Deciphering the Physical Origin of GRB 240825A: A Long GRB Lacking a Bright Supernova
Rahul Gupta, Judith L. Racusin, R. Sanchez-Ramirez +52
We present a comprehensive multiwavelength analysis of GRB 240825A, a bright gamma-ray burst (GRB) detected by Fermi and Swift, with a prompt duration ( ~ 4 sec in 50-3…
Towards a BRICS Optical Transient Network (BRICS-OTN)
David A. H. Buckley, Vanessa A. McBride, Ulisses Barres de Almeida +8
This paper is based on a proposal submitted for a BRICS astronomy flagship program, which was presented at the 2019 meeting of the BRICS Astronomy Working Group, held in Rio de Jan…
A fast X-ray transient with chromatic flares: signatures of violent collisions induced by late-time central engine reactivation
Shao-Yu Fu, Cui-Yuan Dai, Ai-Ling Wang +57
Extragalactic Fast X-ray Transients (EFXTs) represent an emerging class of high-energy phenomena characterized by X-ray outbursts lasting from tens to hundreds of seconds. However,…
GRB 200415A: magnetar giant flare or short gamma-ray burst?
Pavel Minaev, Alexei Pozanenko
A detailed analysis of the GBM/Fermi experiment data is carried out to classify GRB 200415A. It is shown that, on the one hand, this event exhibits typical for type I (short) gamma…
Inhomogeneities in the light curves of gamma-ray bursts afterglow
Elena Mazaeva, Alexei Pozanenko, Pavel Minaev
We discuss the inhomogeneous behavior of gamma-ray burst afterglow light curves in optic. We use well-sampled light curves based on mostly our own observations to find and identify…
Precursors of Short Gamma-Ray Bursts in the SPI-ACS/INTEGRAL Experiment
Pavel Minaev, Alexei Pozanenko
We have analyzed the light curves of 519 short gamma-ray bursts (GRBs) detected in the SPI-ACS/INTEGRAL experiment from December 2002 to May 2014 to search for precursors. Both the…
GRB170817A associated with GW170817: multifrequency observations and modeling of prompt gamma-ray emission
Alexei Pozanenko, Maxim V. Barkov, Pavel Yu. Minaev +7
We present our observations of electromagnetic transients associated with GW170817/GRB 170817A using optical telescopes of Chilescope observatory and Big Scanning Antenna (BSA) of…
The host-galaxy response to the afterglow of GRB 100901A
Olga E. Hartoog, Klaas Wiersema, Paul M. Vreeswijk +16
For Gamma-Ray Burst 100901A, we have obtained Gemini-North and Very Large Telescope optical afterglow spectra at four epochs: one hour, one day, three days and one week after the b…