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The optical afterglow of GW170817 at one year post-merger
G. P. Lamb, J. D. Lyman, A. J. Levan +9
We present observations of the optical afterglow of GRB\,170817A, made by the {\it Hubble Space Telescope}, between February and August 2018, up to one year after the neutron star…
A Comparison between Radio Loud and Quiet Gamma-Ray Bursts, and Evidence for a Potential Correlation between Intrinsic Duration and Redshift in the Radio Loud Population
Nicole M. Lloyd-Ronning, Ben Gompertz, Asaf Pe'er +2
We extend our study of energetic radio loud and quiet gamma-ray bursts (GRBs), suggesting these GRBs potentially come from two separate progenitor systems. We expand the sample fro…
Infrared molecular hydrogen lines in GRB host galaxies
K. Wiersema, A. Togi, D. Watson +12
Molecular species, most frequently H_2, are present in a small, but growing, number of gamma-ray burst (GRB) afterglow spectra at redshifts z~2-3, detected through their rest-frame…
Fallback accretion on to a newborn magnetar: long GRBs with giant X-ray flares
Sarah L. Gibson, Graham A. Wynn, Benjamin P. Gompertz +1
Flares in the X-ray afterglow of gamma-ray bursts (GRBs) share more characteristics with the prompt emission than the afterglow, such as pulse profile and contained fluence. As a r…
The Environments of the Most Energetic Gamma-Ray Bursts
B. P. Gompertz, A. S. Fruchter, A. Pe'er
We analyze the properties of a sample of long gamma-ray bursts (LGRBs) detected by the Fermi satellite that have a spectroscopic redshift and good follow-up coverage at both X-ray…
The optical afterglow of the short gamma-ray burst associated with GW170817
J. D. Lyman, G. P. Lamb, A. J. Levan +33
The binary neutron star merger GW170817 was the first multi-messenger event observed in both gravitational and electromagnetic waves. The electromagnetic signal began approximately…