A multi-wavelength analysis of a collection of short-duration GRBs observed between 2012-2015. (arXiv:1902.07900v1 [astro-ph.HE])
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We investigate the prompt emission and the afterglow properties of short
duration gamma-ray burst (sGRB) 130603B and another eight sGRB events during
2012-2015, observed by several multi-wavelength facilities including the GTC
10.4m telescope. Prompt emission high energy data of the events were obtained
by INTEGRAL/SPI/ACS, Swift/BAT and Fermi/GBM satellites. The prompt emission
data by INTEGRAL in the energy range of 0.1-10 MeV for sGRB 130603B, sGRB
140606A, sGRB 140930B, sGRB 141212A and sGRB 151228A do not show any signature
of the extended emission or precursor activity and their spectral and temporal
properties are similar to those seen in case of other short bursts. For
sGRB130603B, our new afterglow photometric data constraints the pre jet-break
temporal decay due to denser temporal coverage. For sGRB 130603B, the afterglow
light curve, containing both our new as well as previously published
photometric data is broadly consistent with the ISM afterglow model. Modeling
of the host galaxies of sGRB 130603B and sGRB 141212A using the LePHARE
software supports a scenario in which the environment of the burst is
undergoing moderate star formation activity. From the inclusion of our
late-time data for 8 other sGRBs we are able to; place tight constraints on the
non-detection of the afterglow, host galaxy or any underlying kilonova
emission. Our late-time afterglow observations of the sGRB 170817A/GW170817 are
also discussed and compared with the sub-set of sGRBs.
We investigate the prompt emission and the afterglow properties of short
duration gamma-ray burst (sGRB) 130603B and another eight sGRB events during
2012-2015, observed by several multi-wavelength facilities including the GTC
10.4m telescope. Prompt emission high energy data of the events were obtained
by INTEGRAL/SPI/ACS, Swift/BAT and Fermi/GBM satellites. The prompt emission
data by INTEGRAL in the energy range of 0.1-10 MeV for sGRB 130603B, sGRB
140606A, sGRB 140930B, sGRB 141212A and sGRB 151228A do not show any signature
of the extended emission or precursor activity and their spectral and temporal
properties are similar to those seen in case of other short bursts. For
sGRB130603B, our new afterglow photometric data constraints the pre jet-break
temporal decay due to denser temporal coverage. For sGRB 130603B, the afterglow
light curve, containing both our new as well as previously published
photometric data is broadly consistent with the ISM afterglow model. Modeling
of the host galaxies of sGRB 130603B and sGRB 141212A using the LePHARE
software supports a scenario in which the environment of the burst is
undergoing moderate star formation activity. From the inclusion of our
late-time data for 8 other sGRBs we are able to; place tight constraints on the
non-detection of the afterglow, host galaxy or any underlying kilonova
emission. Our late-time afterglow observations of the sGRB 170817A/GW170817 are
also discussed and compared with the sub-set of sGRBs.
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