J/ApJ/908/181ivo://CDS.VizieR/J/ApJ/908/181doi:10.26093/cds/vizier.19080181CDSMuccino M.Izzo L.Luongo O.Boshkayev K.Amati L.Della Valle M.,Pisani G.B.Zaninoni E.2024-11-06T20:22:58Z2024-03-11T08:54:47ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgamma-ray-astronomygamma-ray-burstsx-ray-sourcesredshiftedObservations of gamma-ray bursts up to z~9 are best suited to study the possible evolution of the universe equation of state at intermediate redshifts. We apply the Combo relation to a sample of 174 gamma-ray bursts to investigate possible evidence of evolving dark energy parameter w(z). We first build a gamma-ray burst Hubble's diagram and then we estimate the set ({Omega}m, {Omega}{Lambda}) in the framework of flat and non-flat {Lambda}CDM paradigm. We then get bounds over the wCDM model, where w is thought to evolve with redshift, adopting two priors over the Hubble constant in tension at 4.4{sigma}, i.e., H0=(67.4{+/-}0.5)km/s/Mpc and H0=(74.03{+/-}1.42)km/s/Mpc. We show our new sample provides tighter constraints on {Omega}m since at z<~1.2 we see that w(z) agrees within 1{sigma} with the standard value w=-1. The situation is the opposite at larger z, where gamma-ray bursts better fix w(z) that seems to deviate from w=-1 at 2{sigma} and 4{sigma} level, depending on the redshift bins. In particular, we investigate the w(z) evolution through a piecewise formulation over seven redshift intervals. From our fitting procedure we show that at z>~1.2 the case w<-1 cannot be fully excluded, indicating that dark energy's influence is not negligible at larger z. We confirm the Combo relation as a powerful tool to investigate cosmological evolution of dark energy. Future space missions will significantly enrich the gamma-ray burst database even at smaller redshifts, improving de facto the results discussed in this paper.2021ApJ...908..181Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/908/181CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/612/652 : Dimensionless coordinate distance to supernovae (Daly+, 2004)J/ApJ/716/712 : HST light curves of six SNe and Union2 (Amanullah+, 2010)J/ApJ/746/85 : THe HST Cluster Supernova Survey. V. (Suzuki+, 2012)J/MNRAS/428/729 : GRB Swift X-ray light curves analysis (Margutti+, 2013)J/MNRAS/486/L46 : Gamma-ray burst redshifts (Amati+, 2019)J/ApJ/876/85 : HST observations for LMC Cepheids (Riess+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/908/181https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/908/181http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/908/181https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/908/181https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/908/181http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/908/181GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/908/181/table4 (List of the long bursts analyzed)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/908/181/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/908/181/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/908/181/table4?GETtext/xml+votable180.050000true247.87016672.18736110.0055555555555555566/140 314 500 646 2044 2336 2682 2948 3089 3111 3536 3586 3935 4271 4312 4449-4450 4955 5051 5135 5455 5625 5790 6102 6258 6261 6521 6523 7182 7227 7532 7589 7750 8074 8182 8345 8569 8733 8798 8954 9022 9321 9370 9431 9643 9897 9926 9989 10094 10335 10407 10424 10447 10519 10666 10704 10852 11058 11220 11657 11673 11822 12199 12425 13312 13694 13924 14977 15340 15530 16187 16282 16661 16991 17086 17395 17411 17733 17749 17814 18494 18728 18777 18978 19164 19168 19544 20053 20263 20372 20460 20679 21015 21284 21595 21962 22590 22619 25192 25336 26503 27320 27434 27541 27933 27962 27965 28555 29731 29816 30195 30557 31185 31281 31385 31494 32239 32310 32713 33004 33066 33146 33265 33278 33525 33813 34364 34440 34605 34699 34832 34949 35392-35393 35566 35569 35633 36066 36142 36460 37391 38926 39076 39993 40433 40778 42133 42545 44212 44223 44436 44857 45008 45205 45401 45510 45835 46022 46150 46212 46218 46250 46510 46899 46989 47148 47162 47245 47459 47588 48219 48447 48458 49004https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/908/181?format=asciiGamma-rayX-raydefaultJ/ApJ/908/181/table4List of the long bursts analyzede_logEpi[0.01/0.64] Lower uncertainty on logEpilog(keV)stat.errorfloatlogF0[-12.35/-6.13] log, rest-frame 0.3-10 keV energy flux, erg/s/cm2log(mW.m**-2)phot.flux;em.X-rayfloatE_logF0[0.01/0.26] Upper uncertainty on logF0log(mW.m**-2)stat.error;stat.maxfloate_logF0[0.01/0.77] Lower uncertainty on logF0log(mW.m**-2)stat.errorfloatSimbadNameSimbad column added by the CDSmeta.idcharnullablelogtau[1.22/5.3] log, rest-frame duration, secondslog(s)time.durationfloatE_logtau[0.01/0.3] Upper uncertainty on logtaulog(s)stat.error;stat.maxfloate_logtau[0.01/1.86] Lower uncertainty on logtaulog(s)stat.errorfloatalpha[-6.02/-1.0] late power-law decay indexspect.indexfloate_alpha[0.01/1.79] Uncertainty on alphastat.error;pos.eq.rafloat_RAPosition from SIMBAD (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD (declination part)degpos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintListSource reference list (1)meta.bibcharGRBGamma-ray burst numbermeta.id;meta.maincharz[0.03/9.4] Literature redshiftsrc.redshiftfloatSubsamRedshift sub-sample (2)meta.codecharlogEpi[1.17/3.31] log, rest-frame peak energy, keVlog(keV)phys.energyfloatE_logEpi[0.01/0.66] Upper uncertainty on logEpilog(keV)stat.error;stat.maxfloat