English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Binary-driven-hypernovae (BdHNe) within the induced gravitational collapse(IGC) paradigm have been introduced to explain energetic ($E_{\rm iso}\gtrsim10^{52}$~erg), long gamma-ray bursts (GRBs) associated with type Ic supernovae(SNe). The progenitor is a tight binary composed of a carbon-oxygen (CO) coreand a neutron star (NS) companion, a subclass of the newly proposed"ultra-stripped" binaries. The CO-NS short-period orbit causes the NS toaccrete appriciable matter from the SN ejecta when the CO core collapses,ultimately causing it to collapse to a black hole (BH) and producing a GRB.These tight binaries evolve through the SN explosion very differently thancompact binaries studied in population synthesis calculations. First, thehypercritical accretion onto the NS companion alters both the mass and momentumof the binary. Second, because the explosion timescale is on par with theorbital period, the mass ejection can not be assumed to be instantaneous. Thisdramatically affects the post-SN fate of the binary. Finally, the bow shockcreated as the accreting NS plows through the SN ejecta transfers angularmomentum, braking the orbit. These systems remain bound even if a largefraction of the binary mass is lost in the explosion (well above the canonical50\% limit), and even large kicks are unlikely to unbind the system. Indeed,BdHNe produce a new family of NS-BH binaries unaccounted for in currentpopulation synthesis analyses and, although they may be rare, the fact thatnearly 100\% remain bound implies they may play an important role in thecompact merger rate, important for gravitational waves (GWs) that, in turn, canproduce a new class of ultrashort GRBs.

On the Neutron Star-Black Hole Binaries Produced by Binary-driven-Hypernovae