Measuring the Hubble Constant with Neutron Star Black Hole Mergers
The detection of GW170817 and the identification of its host galaxy have allowed for the first standard-siren measurement of the Hubble constant, with an uncertainty of ∼14%. As more detections of binary neutron stars with redshift measurement are made, the uncertainty will shrink. The dominating fa...
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| Format: | Article |
| Language: | English |
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American Physical Society
2018
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| Online Access: | http://hdl.handle.net/1721.1/117110 https://orcid.org/0000-0003-2700-0767 |
| _version_ | 1826207127468769280 |
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| author | Vitale, Salvatore Chen, Hsin-Yu |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Vitale, Salvatore Chen, Hsin-Yu |
| author_sort | Vitale, Salvatore |
| collection | MIT |
| description | The detection of GW170817 and the identification of its host galaxy have allowed for the first standard-siren measurement of the Hubble constant, with an uncertainty of ∼14%. As more detections of binary neutron stars with redshift measurement are made, the uncertainty will shrink. The dominating factors will be the number of joint detections and the uncertainty on the luminosity distance of each event. Neutron star black hole mergers are also promising sources for advanced LIGO and Virgo. If the black hole spin induces precession of the orbital plane, the degeneracy between luminosity distance and the orbital inclination is broken, leading to a much better distance measurement. In addition, neutron star black hole sources are observable to larger distances, owing to their higher mass. Neutron star black holes could also emit electromagnetic radiation: depending on the black hole spin and on the mass ratio, the neutron star can be tidally disrupted, resulting in electromagnetic emission. We quantify the distance uncertainty for a wide range of black hole mass, spin, and orientations and find that the 1σ statistical uncertainty can be up to a factor of ∼10 better than for a nonspinning binary neutron star merger with the same signal-to-noise ratio. The better distance measurement, the larger gravitational-wave detectable volume, and the potentially bright electromagnetic emission imply that spinning black hole neutron star binaries can be the optimal standard-siren sources as long as their astrophysical rate is larger than O(10) Gpc^{-3} yr^{-1}, a value allowed by current astrophysical constraints. |
| first_indexed | 2024-09-23T13:44:53Z |
| format | Article |
| id | mit-1721.1/117110 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:44:53Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1171102022-09-28T15:52:57Z Measuring the Hubble Constant with Neutron Star Black Hole Mergers Vitale, Salvatore Chen, Hsin-Yu Massachusetts Institute of Technology. Department of Physics MIT Kavli Institute for Astrophysics and Space Research Vitale, Salvatore The detection of GW170817 and the identification of its host galaxy have allowed for the first standard-siren measurement of the Hubble constant, with an uncertainty of ∼14%. As more detections of binary neutron stars with redshift measurement are made, the uncertainty will shrink. The dominating factors will be the number of joint detections and the uncertainty on the luminosity distance of each event. Neutron star black hole mergers are also promising sources for advanced LIGO and Virgo. If the black hole spin induces precession of the orbital plane, the degeneracy between luminosity distance and the orbital inclination is broken, leading to a much better distance measurement. In addition, neutron star black hole sources are observable to larger distances, owing to their higher mass. Neutron star black holes could also emit electromagnetic radiation: depending on the black hole spin and on the mass ratio, the neutron star can be tidally disrupted, resulting in electromagnetic emission. We quantify the distance uncertainty for a wide range of black hole mass, spin, and orientations and find that the 1σ statistical uncertainty can be up to a factor of ∼10 better than for a nonspinning binary neutron star merger with the same signal-to-noise ratio. The better distance measurement, the larger gravitational-wave detectable volume, and the potentially bright electromagnetic emission imply that spinning black hole neutron star binaries can be the optimal standard-siren sources as long as their astrophysical rate is larger than O(10) Gpc^{-3} yr^{-1}, a value allowed by current astrophysical constraints. National Science Foundation (U.S.) Laser Interferometer Gravitational Wave Observatory Science and Technology Facilities Council (Great Britain) (grant) 2018-07-25T15:02:31Z 2018-07-25T15:02:31Z 2018-07 2018-05 2018-07-12T18:00:15Z Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/117110 Vitale, Salvatore and Hsin-Yu Chen. "Measuring the Hubble Constant with Neutron Star Black Hole Mergers." Physical Review Letters, 121, 021303. https://orcid.org/0000-0003-2700-0767 en http://dx.doi.org/10.1103/PhysRevLett.121.021303 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Vitale, Salvatore Chen, Hsin-Yu Measuring the Hubble Constant with Neutron Star Black Hole Mergers |
| title | Measuring the Hubble Constant with Neutron Star Black Hole Mergers |
| title_full | Measuring the Hubble Constant with Neutron Star Black Hole Mergers |
| title_fullStr | Measuring the Hubble Constant with Neutron Star Black Hole Mergers |
| title_full_unstemmed | Measuring the Hubble Constant with Neutron Star Black Hole Mergers |
| title_short | Measuring the Hubble Constant with Neutron Star Black Hole Mergers |
| title_sort | measuring the hubble constant with neutron star black hole mergers |
| url | http://hdl.handle.net/1721.1/117110 https://orcid.org/0000-0003-2700-0767 |
| work_keys_str_mv | AT vitalesalvatore measuringthehubbleconstantwithneutronstarblackholemergers AT chenhsinyu measuringthehubbleconstantwithneutronstarblackholemergers |