2022MNRAS.516.4980L

Query : 2022MNRAS.516.4980L

2022MNRAS.516.4980L - Mon. Not. R. Astron. Soc., 516, 4980-4987 (2022/November-2)

Orphan optical flare as SOSS emission afterglow, localization in time.

LIPUNOV V., KORNILOV V., ZHIRKOV K., TYURINA N., GORBOVSKOY E., VLASENKO D., SIMAKOV S., TOPOLEV V., FRANCILE C., PODESTA R., PODESTA F., SVINKIN D., BUDNEV N., GRESS O., BALANUTSA P., KUZNETSOV A., CHASOVNIKOV A., SERRA-RICART M., GABOVICH A., MINKINA E., ANTIPOV G., SVERTILOV S., TLATOV A., SENIK V., TSELIK Y., KECHIN Y. and YURKOV V.

Abstract (from CDS):

We report on MASTER optical observations of an afterglow-like optical and X-ray transient AT2021lfa/ZTF21aayokph. We detected the initial steady brightening of the transient at 7σ confidence level. This allowed us to use smooth optical self-similar emission of GRBs model to constrain the explosion time to better than 14 min as well as to estimate its initial Lorentz factor Γ0 = 20 ± 10. Taking into consideration the low Γ0 and non-detection in gamma-rays, we classify this transient as the first failed GRB afterglow.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): stars: black holes - (stars:) gamma-ray burst: general - stars: neutron

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 AT 2021lfa ev 12 32 48.72 -01 29 22.5           ~ 22 0
2 GRB 181213A gB 16 33 04.83 +78 29 49.1           ~ 24 0
3 GRB 180316A gB 17 41 42.82 +00 44 53.6           ~ 27 0

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