TY - JOUR
T1 - Measuring the Hubble constant with a sample of kilonovae
AU - Coughlin, Michael W.
AU - Antier, Sarah
AU - Dietrich, Tim
AU - Foley, Ryan J.
AU - Heinzel, Jack
AU - Bulla, Mattia
AU - Christensen, Nelson
AU - Coulter, David A.
AU - Issa, Lina
AU - Khetan, Nandita
N1 - Publisher Copyright:
© 2020, The Author(s).
PY - 2020/8/17
Y1 - 2020/8/17
N2 - 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 (H0). 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 H0 contraints. Here, we show measurement of H0 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.
AB - 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 (H0). 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 H0 contraints. Here, we show measurement of H0 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.
UR - https://www.scopus.com/pages/publications/85089500189
UR - https://www.scopus.com/pages/publications/85089500189#tab=citedBy
U2 - 10.1038/s41467-020-17998-5
DO - 10.1038/s41467-020-17998-5
M3 - Article
C2 - 32807780
AN - SCOPUS:85089500189
SN - 2041-1723
VL - 11
JO - Nature communications
JF - Nature communications
IS - 1
M1 - 4129
ER -