J/A+A/557/A100ivo://CDS.VizieR/J/A+A/557/A100doi:10.26093/cds/vizier.35570100CDSHeussaff V.Atteia J.-L.Zolnierowski Y.2018-05-29T17:50:04Z2014-03-03T14:05:11ZCDS support team

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

cds-question@unistra.frgamma-ray-astronomyredshiftedspectroscopyWe used a sample of gamma-ray bursts (GRBs) detected by Fermi and Swift to reanalyze the correlation discovered by Amati et al. (2002A&A...390...81A) between E_pi_, the peak energy of the prompt GRB emission, and E_iso_, the energy released by the GRB assuming isotropic emission. This correlation has been disputed by various authors, and our aim is to assess whether it is an intrinsic GRB property or the consequence of selection effects. We constructed a sample of Fermi GRBs with homogeneous selection criteria, and we studied their distribution in the E_pi_-E_iso_ plane. Our sample is made of 43 GRBs with a redshift and 243 GRBs without a redshift. We show that GRBs with a redshift follow a broad E_pi_-E_iso_ relation, while GRBs without a redshift show several outliers. We use these samples to discuss the impact of selection effects associated with GRB detection and with redshift measurement.2013A&A...557A.100Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/557/A100CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/525/A53 : GBM parameters for detected FERMI bursts (Guetta+, 2011)J/A+A/530/A21 : Spectral properties of 438 GRBs (Nava+, 2011)J/ApJS/199/18 : The Fermi GBM catalog (Paciesas+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/557/A100https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/557/A100http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/557/A100https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/557/A100https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/557/A100http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/557/A100GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/557/A100/GRBs ({gamma}-ray bursts used on the study, including 43 with a redshift (table A1) and 243 without a redshift (table A2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/557/A100/GRBs?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/557/A100/GRBs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/557/A100/GRBs?GETtext/xml+votable180.050000true328.7-53.20.0055555555555555566/202 462 607 646 1145 1827 2002 2025 2028 2315 2717 2748 2916 3038 3240 3586 3659 3806 3938 4449 4487 4655 4690 5011 5051 5065 5228 5625 5650 5719 5871 5907 5945 6216 6261 6581 6827 7150 7164 7332 7364 7789 7886 7890 8224 8362 8478 8569 8892 9215 9240 9278 9317 9343 9431 9525 9733 9937 9984 10129 10407 10631 10785 11209 11220 11248 11365 11545 11563 11822 12170 12287-12288 12438 12726 12826 13215 13559 13896 14058-14059 14248 14259 14492 14715 15201 15530 16057 16084 16163 16282 16353 16427 16661 17306 17411 17512 17732 17749 17759 17877 17904 17944 18149 18339 18704 18777 18784 19405 19432 19544 19562 19622 20077 20426 20460 20668 20736 20820 20941 21284 21414 21490 21538 21595 21737 21794 21816 21880 21995 22181 22619 22715 22838 23423 23621 23921 23949 24160 24258 24378 24471 24511 24642 24709 24767 24846 24988 25070 25111 25171 25552 25632 25675 25710 25854 26365 26735 27110 27279 27352 27961-27962 27989 28123 28148 28164 28555 28661 28692 28729 28732 28863 28930 29265 29449 29593 29870 29920 30037 30139 30237 30347 30872 31035 31187 31270 31730 31982 32183 32419 32579 32646 32936 32988 32995 33092 33655 33749 33813 33922 33961 34302 34816 34999 35221 35492 35553 35569 35633 35652 35769 35812 35844 36442 36444 36460 36532 36701 36726 36851 36858 37128 37281 37440 37505 37510 37628 37910 38004 38362 38450 38944 38965 39370 39521 39594 39828 39951 39969 40167 40184 40400 40446 40542 40632 40778 40839 41250-41251 41323 41706 41936 42216 42399 42468 42473 42930 43098 43498 43891 44202 44277 44768 44876 45373 45401 45464 45777 45868 46071 46218 46594 46813 47035 47148 47162 47371 47438 47617 47770 47975 48312 48643 48666 48774https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/557/A100?format=asciiGamma-raydefaultJ/A+A/557/A100/GRBs{gamma}-ray bursts used on the study, including 43 with a redshift (table A1) and 243 without a redshift (table A2)SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGRBGRB namemeta.id;meta.mainlongn_GRB[*ob] Note on GRB (1)meta.notecharz? Redshift (only for sources in tablea1)src.redshiftfloatnullabler_zReference for redshift, in refs.dat filemeta.ref;pos.framecharalphaPhoton spectral index {alpha} of the low energy power law ({alpha}>-2)spect.indexfloate_alpharms uncertainty on alpha (confidence level of 90%)stat.error;pos.eq.rafloatbetaPhoton spectral index {beta} of the high energy power law ({beta}<-2)em.energyfloate_beta? rms uncertainty on beta (confidence level of 90%)stat.errorfloatnullableEpoPeak energy E_po_ of the {nu}F{nu} spectrum in the observer's framekeVem.energyintr_EpoReference for Ep, in refs.dat filemeta.ref;pos.framechare_Eporms uncertainty on Ep (confidence level of 90%)keVstat.errorintFluenceFluence (in 10^-7^erg/cm^2^)1e-10J.m**-2phot.fluence;em.gamma.hardfloate_Fluencerms uncertainty on Fluence1e-10J.m**-2stat.error;phot.fluencefloat_RAPositions from Paciesas et al., 2012, Cat. J/ApJS/199/18, and GCNs for GRBs discovered after 2012 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Paciesas et al., 2012, Cat. J/ApJS/199/18, and GCNs for GRBs discovered after 2012 (declination part)degpos.eq.dec;meta.mainJ/A+A/557/A100/refsReferencesRefReference codemeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComAdditional referencesmeta.notechar