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

A novel concept has been recently proposed for explaining the temporalcoincidence of some Gamma Ray Bursts (GRBs) with an associated Supernova (SN)in terms of the gravitational collapse of a neutron star (NS) to a Black Hole(BH), induced by a type Ib/c SN explosion. We apply these considerations to theexceptional case of GRB 090618, for which there is evidence of a SN $\sim 10$days after the GRB occurrence. We calculate the accretion rate and totalaccreted mass onto a NS from a SN Ib/c originated from a companion evolvedstar. It is shown that the NS reaches in a few seconds the critical mass andundergoes gravitational collapse to a BH leading to the emission of a GRB. Wefind for the mass of the NS companion, $M_{\rm NS}$, and for the SN coreprogenitor, $M_{\rm core}$, the following mass ranges: $1.8\lesssimM_{NS}/M_\odot \lesssim 2.1$ and $3\leq M_{\rm core}/M_\odot \leq 8$. Finally,we discuss the complementarity of these considerations to alternative processesexplaining long and short GRBs.

GRB 090618: The First Example of a Neutron Star Gravitational Collapse to a Black Hole Induced by a Type Ib/c Supernova