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  • Sarin, NikhilStockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Monash University, Australia; OzGrav: The ARC Centre of Excellence for Gravitational Wave Discovery, Australia,Nordita SU; Monash Univ, Sch Phys & Astron, Clayton, Vic 3800, Australia.;OzGrav ARC Ctr Excellence Gravitat Wave Discovery, Clayton, Vic 3800, Australia.;Stockholm Univ, NORDITA, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden.;Stockholm Univ, Dept Phys, Oskar Klein Ctr, AlbaNova, SE-10691 Stockholm, Sweden. (author)

Linking the rates of neutron star binaries and short gamma-ray bursts

  • Article/chapterEnglish2022

Publisher, publication year, extent ...

  • American Physical Society (APS),2022
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:kth-314880
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-314880URI
  • https://doi.org/10.1103/PhysRevD.105.083004DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-207090URI

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  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • QC 20220627
  • Short gamma-ray bursts are believed to be produced by both binary neutron star (BNS) and neutron star-black hole (NSBH) mergers. We use current estimates for the BNS and NSBH merger rates to calculate the fraction of observable short gamma-ray bursts produced through each channel. This allows us to constrain merger rates of a BNS to R-BNS = 384(-213)(+431) Gpc(-3) yr(-1) (90% credible interval), a 16% decrease in the rate uncertainties from the second Laser Interferometer Gravitational Wave Observatory (LIGO)-Virgo Gravitational-Wave Transient Catalog. Assuming a top-hat emission profile with a large Lorentz factor, we constrain the average opening angle of gamma-ray burst jets produced in BNS mergers to approximate to 15 degrees. We also measure the fraction of BNS and NSBH mergers that produce an observable short gamma-ray burst to be 0.02(-0.01)(+0.02) and 0.01 +/- 0.01, respectively, and find that greater than or similar to 40% of BNS mergers launch jets (90% confidence). We forecast constraints for future gravitational-wave detections given different modeling assumptions, including the possibility that BNS and NSBH jets are different. With 24 BNS and 55 NSBH observations, expected within six months of the LIGO-Virgo-Kamioka Gravitational Wave Detector network operating at design sensitivity, it will be possible to constrain the fraction of BNS and NSBH mergers that launch jets with 10% precision. Within a year of observations, we can determine whether the jets launched in NSBH mergers have a different structure than those launched in BNS mergers and rule out whether greater than or similar to 80% of binary neutron star mergers launch jets. We discuss the implications of future constraints on understanding the physics of short gamma-ray bursts and binary evolution.

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  • Lasky, Paul D.Monash Univ, Sch Phys & Astron, Clayton, Vic 3800, Australia.;OzGrav ARC Ctr Excellence Gravitat Wave Discovery, Clayton, Vic 3800, Australia. (author)
  • Vivanco, Francisco HernandezMonash Univ, Sch Phys & Astron, Clayton, Vic 3800, Australia.;OzGrav ARC Ctr Excellence Gravitat Wave Discovery, Clayton, Vic 3800, Australia. (author)
  • Stevenson, Simon P.Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia.;OzGrav ARC Ctr Excellence Gravitat Wave Discovery, Hawthorn, Vic 3122, Australia. (author)
  • Chattopadhyay, DebatriSwinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia.;OzGrav ARC Ctr Excellence Gravitat Wave Discovery, Hawthorn, Vic 3122, Australia.;Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, Wales. (author)
  • Smith, RoryMonash Univ, Sch Phys & Astron, Clayton, Vic 3800, Australia.;OzGrav ARC Ctr Excellence Gravitat Wave Discovery, Clayton, Vic 3800, Australia. (author)
  • Thrane, EricMonash Univ, Sch Phys & Astron, Clayton, Vic 3800, Australia.;OzGrav ARC Ctr Excellence Gravitat Wave Discovery, Clayton, Vic 3800, Australia. (author)
  • Stockholms universitetNordiska institutet för teoretisk fysik (Nordita) (creator_code:org_t)

Related titles

  • In:Physical Review D: American Physical Society (APS)105:82470-00102470-0029

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