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Palmese, A.; deVicente, J.; Pereira, M. E. S.; Annis, J.; Hartley, W.; Herner, K.; Soares-Santos, M.; Crocce, M.; Huterer, D.; Magaña Hernandez, I.; Garcia, A.; Garcia-Bellido, J.; Gschwend, J.; Holz, D. E.; Kessler, R.; Lahav, O.; Morgan, R.; Nicolaou, C.; Conselice, C.; Foley, R. J.; Gill, M. S. S.; Abbott, T. M. C.; Aguena, M.; Allam, S.; Avila, S.; Bechtol, K.; Bertin, E.; Bhargava, S.; Brooks, D.; Buckley-Geer, E.; Burke, D. L.; Kind, M. Carrasco; Carretero, J.; Castander, F. J.; Chang, C.; Costanzi, M.; Costa, L. N. da; Davis, T. M.; Desai, S.; Diehl, H. T.; Doel, P.; Drlica-Wagner, A.; Estrada, J.; Everett, S.; Evrard, A. E.; Fernandez, E.; Finley, D. A.; Flaugher, B.; Fosalba, P.; Frieman, J.; Gaztanaga, E.; Gerdes, D. W.; Gruen, D.; Gruendl, R. A.; Gutierrez, G.; Hinton, S. R.; Hollowood, D. L.; Honscheid, K.; James, D. J.; Kent, S.; Krause, E.; Kuehn, K.; Lin, H.; Maia, M. A. G.; March, M.; Marshall, J. L.; Melchior, P.; Menanteau, F.; Miquel, R.; Ogando, R. L. C.; Paz-Chinchón, F.; Plazas, A. A.; Roodman, A.; Sako, M.; Sanchez, E.; Scarpine, V.; Schubnell, M.; Serrano, S.; Sevilla-Noarbe, I.; Smith, J. Allyn; Smith, M.; Suchyta, E.; Tarle, G.; Troxel, M. A.; Tucker, D. L.; Walker, A. R.; Wester, W.; Wilkinson, R. D.; Zuntz, J.
Astrophysical journal. Letters, 09/2020, Letnik: 900, Številka: 2Journal Article
We present a measurement of the Hubble constant H0 using the gravitational wave (GW) event GW190814, which resulted from the coalescence of a 23 M black hole with a 2.6 M compact object, as a standard siren. No compelling electromagnetic counterpart has been identified for this event; thus our analysis accounts for thousands of potential host galaxies within a statistical framework. The redshift information is obtained from the photometric redshift (photo-z) catalog from the Dark Energy Survey. The luminosity distance is provided by the LIGO/Virgo gravitational wave sky map. Since this GW event has the second-smallest localization volume after GW170817, GW190814 is likely to provide the best constraint on cosmology from a single standard siren without identifying an electromagnetic counterpart. Our analysis uses photo-z probability distribution functions and corrects for photo-z biases. We also reanalyze the binary black hole GW170814 within this updated framework. We explore how our findings impact the H0 constraints from GW170817, the only GW merger associated with a unique host galaxy. From a combination of GW190814, GW170814, and GW170817, our analysis yields (68% highest-density interval, HDI) for a prior in H0 uniform between . The addition of GW190814 and GW170814 to GW170817 improves the 68% HDI from GW170817 alone by ∼18%, showing how well-localized mergers without counterparts can provide a significant contribution to standard siren measurements, provided that a complete galaxy catalog is available at the location of the event.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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