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21 de abr. de 2023 · This work implements a procedure for determining the darkness of GRBs based on spectral indices calculated using temporally matched Swift–X-ray Telescope data and optical follow-up observations; presents a complete and up-to-date catalogue of known short GRBs that exhibit optical darkness; and outlines some of the possible ...
Gamma-ray bursts (GRBs) categorically produce broadband afterglow emission, but in some cases, emission in the optical band is less luminous than expected. The phenomenon of optical darkness has been studied extensively in long GRBs (related to massive stellar explosions), with a number of proposed explanations, including high redshift and host ...
This phenomenon, aptly dubbed 'optical darkness', has been studied extensively in long GRBs (associated with the explosive deaths of massive stars), with possible explanations ranging from host environment extinction to high redshift to possibly unique emission mechanisms.
γ rays have several unique properties that make them ideally suited to study dark matter annihilations. Primarily, they do not get deflected in intervening magnetic fields and thus point back at the site at which they are created.
18 de abr. de 2023 · Gamma-ray bursts categorically produce broadband afterglow emission, but in some cases, emission in the optical band is dimmer than expected based on the contemporaneously observed X-ray flux. This phenomenon, aptly dubbed "optical darkness", has been studied extensively in long GRBs (associated with the explosive deaths of massive ...
Key words gamma-ray bursts neutron star mergers dust, extinction methods observational. 1 INTRODUCTION. Gamma-ray bursts GRBs are some of the brightest transient as-trophysical phenomena observed in the Universe.
The phenomenon of optical darkness has been studied extensively in long GRBs (related to massive stellar explosions), with a number of proposed explanations, including high redshift and host galaxy extinction.
