Identifying the fingerprints of r-process heavy metals in a short GRB

Troja, Eleonora; Becerra-Gonzalez, Josefa; Bruni, Gabriele; Butler, Nathaniel; Cenko, Stephen Bradley; Chase, Eve; Fryer, Chris; Lee, William H.; Lien, Amy; O'Connor, Brendan; Ricci, Robberto; Ryan, Geoffrey; Sakamoto, Taka; Thakur, Aish; Watson, Alan
Referencia bibliográfica

HST Proposal

Fecha de publicación:
9
2021
Número de autores
15
Número de autores del IAC
1
Número de citas
0
Número de citas referidas
0
Descripción
The afterglow of some short GRBs displays a late-time rebrightening, visible in the near-infrared a few days after the burst. This late-time bump could be explained as kilonova emission, providing a direct link to neutron star mergers, and a compelling proof for the synthesis of heavy nuclei through the rapid neutron capture process (r-process). We propose a multi-wavelength follow-up campaign of a nearby (z<0.4) short GRB in order to detect the expected kilonova bump and constrain its properties. Multi-band observations, and in particular X-rays, are critical to pin down the nature of the observed rebrightening, and to distinguish it from the standard afterglow emission.