Searching for early optical transients of gamma-ray bursts with TAROT. Technical status

Prompt Comparison of Data for Optical Transients of Gamma-Ray Bursts

10.1063/1.1810805 ◽

2004 ◽

Author(s):

G. Pizzichini

Keyword(s):

Gamma Ray ◽

Gamma Ray Bursts ◽

Optical Transients

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The Optical Transient Search in the Bamberg Southern Sky Survey: Preliminary Results

Acta Polytechnica ◽

10.14311/1502 ◽

2012 ◽

Vol 52 (1) ◽

Author(s):

R. Hudec ◽

F. Kopel ◽

P. Krapp ◽

U. Heber ◽

W. Cayé

Keyword(s):

High School ◽

Gamma Ray ◽

Large Fraction ◽

Gamma Ray Bursts ◽

Extended Study ◽

Maximum Light ◽

Sky Survey ◽

Optical Transients ◽

Optical Surveys ◽

Optical Transient

A large fraction of gamma-ray bursts temporarily emit optical light, i.e. optical afterglows and optical transients. So far, optical transients have only been detected after related gamma-ray satellite detection. However, taking into account their optical magnitudes at maximum light, these objects should be detectable in various historical and recent optical surveys, including the photographic sky patrol. Here we report on an extended study based on blink-comparison of 5004 Bamberg Observatory Southern Sky Patrol Plates performed within a student high school project (Jugend Forscht).

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Revealing Short GRB Jet Structure and Dynamics with Gravitational Wave Electromagnetic Counterparts

Proceedings of the International Astronomical Union ◽

10.1017/s1743921318000169 ◽

2017 ◽

Vol 13 (S338) ◽

pp. 1-8

Author(s):

Gavin P. Lamb ◽

Shiho Kobayashi

Keyword(s):

Gravitational Wave ◽

Gamma Ray ◽

Compact Object ◽

Gamma Ray Bursts ◽

Viewing Angle ◽

Hidden Population ◽

Structure And Dynamics ◽

Optical Transients ◽

Jet Structure

AbstractCompact object mergers are promising candidates for the progenitor system of short gamma-ray bursts (GRBs). Using gravitational wave (GW) triggers to identify a merger, any electromagnetic (EM) counterparts from the jet can be used to constrain the dynamics and structure of short GRB jets. GW triggered searches could reveal a hidden population of optical transients associated with the short-lived jets from the merger object. If the population of merger-jets is dominated by low-Lorentz-factors, then a GW triggered search will reveal the on-axis orphan afterglows from these failed GRBs. By considering the EM counterparts from a jet, with or without the prompt GRB, the jet structure and dynamics can be constrained. By modelling the afterglow of various jet structures with viewing angle, we provide observable predictions for the on- and off- axis EM jet counterparts. The predictions provide an indication for the various features expected from the proposed jet structure models.

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