Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Multi-messenger Observations of a Binary Neutron Star Merger
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
Visa övriga samt affilieringar
Antal upphovsmän: 36142017 (Engelska)Ingår i: Astrophysical Journal Letters, ISSN 2041-8205, E-ISSN 2041-8213, Vol. 848, nr 2, artikel-id L12Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of similar to 1.7 s with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg(2) at a luminosity distance of 40(-8)(+8) Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 M-circle dot. An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identification of AT 2017gfo) in NGC 4993 (at similar to 40 Mpc) less than 11 hours after the merger by the One-Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over similar to 10 days. Following early non-detections, X-ray and radio emission were discovered at the transient's position similar to 9 and similar to 16 days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. These observations support the hypothesis that GW170817 was produced by the merger of two neutron stars in NGC4993 followed by a short gamma-ray burst (GRB 170817A) and a kilonova/macronova powered by the radioactive decay of r-process nuclei synthesized in the ejecta.

Ort, förlag, år, upplaga, sidor
2017. Vol. 848, nr 2, artikel-id L12
Nyckelord [en]
gravitational waves, stars: neutron
Nationell ämneskategori
Fysik
Identifikatorer
URN: urn:nbn:se:su:diva-149847DOI: 10.3847/2041-8213/aa91c9ISI: 000413211000001OAI: oai:DiVA.org:su-149847DiVA, id: diva2:1168181
Tillgänglig från: 2017-12-20 Skapad: 2017-12-20 Senast uppdaterad: 2022-03-23Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltext

Person

Ahrens, MaryonBohm, ChristianConrad, Jan M.Dumm, Jonathan P.Finley, ChadFlis, SamuelHultqvist, KlasWalck, ChristianZoll, MarcelMeyer, ManuelRosswog, StephanFeindt, UlrichGoobar, ArielSollerman, JesperBarbarino, CristinaBulla, MattiaRoy, RupakTaddia, FrancescoFarnier, ChristianMorå, KnutWagner, Robert M.

Sök vidare i DiVA

Av författaren/redaktören
Ahrens, MaryonBohm, ChristianConrad, Jan M.Dumm, Jonathan P.Finley, ChadFlis, SamuelHultqvist, KlasWalck, ChristianZoll, MarcelMeyer, ManuelRosswog, StephanFeindt, UlrichGoobar, ArielSollerman, JesperBarbarino, CristinaBulla, MattiaRoy, RupakTaddia, FrancescoFarnier, ChristianMorå, KnutWagner, Robert M.
Av organisationen
FysikumOskar Klein-centrum för kosmopartikelfysik (OKC)Institutionen för astronomi
I samma tidskrift
Astrophysical Journal Letters
Fysik

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 259 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf