The astrophysical environments capable of triggering heavy-element synthesis via rapid
neutron capture (the r-process) remain uncertain. While binary neutron star mergers (NSMs) …

Collapsing stars constitute the main black hole (BH) formation channel, and are occasionally
associated with the launch of relativistic jets that power γ-ray bursts (GRBs). Thus, collapsars …

The spin of a newly formed black hole (BH) at the center of a massive star evolves from its
natal value due to two competing processes: accretion of gas angular momentum that …

The early steep decay, a rapid decrease in X-ray flux as a function of time following the
prompt emission, is a robust feature seen in almost all gamma-ray bursts with early enough …

We present a start-to-end simulation aimed at studying the long-term fate of high mass X-ray
binaries and whether a Thorne-\. Zytkow object (T\. ZO) might ultimately be produced. We …