Short Gamma-Ray Bursts from the Merger of Two Black Holes Public Deposited

http://ir.library.oregonstate.edu/concern/articles/tx31qk610

This is the publisher’s final pdf. The article is copyrighted by the American Astronomical Society and published by IOP Publishing. It can be found at:  http://iopscience.iop.org/journal/2041-8205

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Short gamma-ray bursts (GRBs) are explosions of cosmic origins believed to be associated with the merger of two compact objects, either two neutron stars or a neutron star and a black hole (BH). The presence of at least one neutron star has long been thought to be an essential element of the model: its tidal disruption provides the needed baryonic material whose rapid accretion onto the post-merger BH powers the burst. The recent tentative detection by the Fermi satellite of a short GRB in association with the gravitational wave signal GW150914 produced by the merger of two BHs has challenged this standard paradigm. Here, we show that the evolution of two high-mass, low-metallicity stars with main-sequence rotational speeds a few tens of percent of the critical speed eventually undergoing a weak supernova explosion can produce a short GRB. The outer layers of the envelope of the last exploding star remain bound and circularize at large radii. With time, the disk cools and becomes neutral, suppressing the magnetorotational instability, and hence the viscosity. The disk remains "long-lived dead" until tidal torques and shocks during the pre-merger phase heat it up and re-ignite accretion, rapidly consuming the disk and powering the short GRB.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Perna, R., Lazzati, D., & Giacomazzo, B. (2016). Short Gamma-Ray Bursts from the Merger of Two Black Holes. The Astrophysical Journal Letters, 821(1), L18. doi:10.3847/2041-8205/821/1/L18
Series
Keyword
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2016-05-11T18:29:35Z (GMT) No. of bitstreams: 2 krauserp410077727.zip: 397663 bytes, checksum: 2463e1fa7990ba0705eb4242aa7773ba (MD5) PernaShortGammaRayBursts.pdf: 506553 bytes, checksum: 09effa4ff929ea94543187435873de35 (MD5)
  • description.provenance : Made available in DSpace on 2016-05-11T18:29:35Z (GMT). No. of bitstreams: 2 krauserp410077727.zip: 397663 bytes, checksum: 2463e1fa7990ba0705eb4242aa7773ba (MD5) PernaShortGammaRayBursts.pdf: 506553 bytes, checksum: 09effa4ff929ea94543187435873de35 (MD5) Previous issue date: 2016-04-10
  • description.provenance : Submitted by Open Access (openaccess@library.oregonstate.edu) on 2016-05-09T18:36:58Z No. of bitstreams: 1 PernaShortGammaRayBursts.pdf: 506553 bytes, checksum: 09effa4ff929ea94543187435873de35 (MD5)

Relationships

In Administrative Set:
Last modified: 05/09/2016

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items