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Measuring the Hubbl...
Measuring the Hubble constant with a sample of kilonovae
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- Coughlin, Michael W. (författare)
- Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA.;CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA.
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- Antier, Sarah (författare)
- APC, UMR 7164, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris, France.
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- Dietrich, Tim (författare)
- Univ Potsdam, Inst Phys & Astron, Haus 28,Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany.;Nikhef, Sci Pk 105, NL-1098 XG Amsterdam, Netherlands.
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- Foley, Ryan J. (författare)
- Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
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- Heinzel, Jack (författare)
- Univ Cote dAzur, Artemis, Observ Cote dAzur, CNRS, CS 34229, F-06304 Nice 4, France.;Carleton Coll, Phys & Astron, Northfield, MN 55057 USA.
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- Bulla, Mattia (författare)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Stockholm Univ, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden.,Nordiska institutet för teoretisk fysik (Nordita)
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- Christensen, Nelson (författare)
- Univ Cote dAzur, Artemis, Observ Cote dAzur, CNRS, CS 34229, F-06304 Nice 4, France.;Carleton Coll, Phys & Astron, Northfield, MN 55057 USA.
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- Coulter, David A. (författare)
- Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA.
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- Issa, Lina (författare)
- Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Université Paris-Saclay, France,Stockholm Univ, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden.;Univ Paris Saclay, Dept Phys, ENS Paris Saclay, F-91190 Gif Sur Yvette, France.;Nordita SU
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- Khetan, Nandita (författare)
- Gran Sasso Sci Inst GSSI, I-67100 Laquila, Italy.
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Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA;CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA. APC, UMR 7164, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris, France. (creator_code:org_t)
- 2020-08-17
- 2020
- Engelska.
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Ingår i: Nature Communications. - : Nature Publishing Group. - 2041-1723. ; 11:1
- Relaterad länk:
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https://doi.org/10.1...
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https://www.nature.c...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Kilonovae produced by the coalescence of compact binaries with at least one neutron star are promising standard sirens for an independent measurement of the Hubble constant (H-0). Through their detection via follow-up of gravitational-wave (GW), short gamma-ray bursts (sGRBs) or optical surveys, a large sample of kilonovae (even without GW data) can be used for H-0 contraints. Here, we show measurement of H-0 using light curves associated with four sGRBs, assuming these are attributable to kilonovae, combined with GW170817. Including a systematic uncertainty on the models that is as large as the statistical ones, we find H0=73.8-5.8+6.3kms-1Mpc-1 and H0=71.2-3.1+3.2kms-1Mpc-1 for two different kilonova models that are consistent with the local and inverse-distance ladder measurements. For a given model, this measurement is about a factor of 2-3 more precise than the standard-siren measurement for GW170817 using only GWs. Kilonovae observations can be used to out constraints on the Hubble constant (H0). Here, the authors show H0 measurements by combining light curves of four short gamma-ray burts with GW170817 are about a factor of 2-3 more precise than the standard-siren measurements using only gravitational-waves.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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Coughlin, Michae ...
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Antier, Sarah
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Dietrich, Tim
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Foley, Ryan J.
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Heinzel, Jack
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Bulla, Mattia
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visa fler...
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Christensen, Nel ...
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Coulter, David A ...
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Issa, Lina
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Khetan, Nandita
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