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<ri:Resource created="2023-05-30T15:19:51Z" status="active" updated="2025-05-19T09:50:00Z" version="1.2" xmlns:cs="http://www.ivoa.net/xml/ConeSearch/v1.0" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.ivoa.net/xml/ConeSearch/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/ConeSearch.xsd http://www.ivoa.net/xml/VOResource/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VOResource.xsd http://www.ivoa.net/xml/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd" xsi:type="vs:CatalogService"><title>Type I GRBs and the new classification method</title><shortName>J/MNRAS/492/1919</shortName><identifier>ivo://CDS.VizieR/J/MNRAS/492/1919</identifier><altIdentifier>doi:10.26093/cds/vizier.74921919</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Minaev P.Y.</name></creator><creator><name>Pozanenko A.S.</name></creator><date role="Updated">2024-08-20T20:15:29Z</date><date role="Created">2023-05-30T15:19:51Z</date><contact><name>CDS support team</name><address>CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France</address><email>cds-question@unistra.fr</email></contact></curation><content><subject>gamma-ray-astronomy</subject><subject>gamma-ray-bursts</subject><subject>redshifted</subject><description>We present the most extensive sample of 45 type I (short) and 275 type II (long) gamma-ray bursts (GRBs) with known redshift to investigate the correlation between the rest-frame peak energy, E_p,i_ and the total isotropic equivalent energy, E_iso_ of the prompt emission (Amati relation). The E_p,i_-E_iso_ correlation for type I bursts is found to be well distinguished from the one constructed for type II bursts and has a similar power-law index value, E_p,i_{prop.to}E_iso_^0.4^, which possibly indicates the same emission mechanism of both GRB types. We show that the initial pulse complex (IPC) of type I bursts with an extended emission and regular type I bursts follow the same correlation. We obtain similar results for type II bursts associated with Ic supernovae and for regular type II bursts. Three possible outliers from the E_p,i_-E_iso_ correlation for type II subsample are detected. Significant evolution of the E_p,i_-E_iso_ correlation with redshift for type II bursts is not found. We suggest the new classification method, based on the E_p,i_-E_iso_ correlation and introduce two parameters, EH=E_p,i,2_E_iso,51_^-0.4^ and EHD=E_p,i,2_ E_iso,51_^-0.4^T_90,i_^-0.5^, where E_p,i,2_ is the value of E_p,i_ parameter in units of 100keV, E_iso,51_ is the value of E_iso_ parameter in units of 10^51^erg, and T_90,i_ is the rest-frame duration in units of seconds. EHD is found to be the most reliable parameter for the blind type I/type II classification, which can be used to classify GRBs with no redshift.</description><source format="bibcode">2020MNRAS.492.1919M</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/492/1919</referenceURL><type>Catalog</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/TAP">TAP VizieR generic service</relatedResource></relationship><relationship><relationshipType>IsServedBy</relationshipType><relatedResource>Conesearch service</relatedResource></relationship><relationship><relationshipType>related-to</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/224/10">J/ApJS/224/10 : The second Konus-Wind short GRB catalog (Svinkin+, 2016)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/850/161">J/ApJ/850/161 : Konus-Wind cat. of GRBs with redshifts. I. 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Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>GRB</name><description>GRB name (YYMMDDA)</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="7*">char</dataType></column><column><name>f_GRB</name><description>[*] Flag on GRB (1)</description><ucd>meta.code</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>T90i</name><description>Rest-frame duration of the burst (2)</description><unit>s</unit><ucd>time.duration</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>z</name><description>Redshift</description><ucd>src.redshift</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>E_z</name><description>? Upper error on z</description><ucd>stat.error;stat.max</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_z</name><description>? Lower error on z</description><ucd>stat.error;src.redshift</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>f_z</name><description>[PH ] Flag on z indicating the redshift is photometric</description><ucd>meta.code</ucd><dataType xsi:type="vs:VOTableType" arraysize="2*">char</dataType></column><column><name>Eiso</name><description>Total isotropic equivalent energy</description><unit>1e+44J</unit><ucd>phys.energy</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>E_Eiso</name><description>Upper error on Eiso</description><unit>1e+44J</unit><ucd>stat.error;stat.max</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_Eiso</name><description>Lower error on Eiso</description><unit>1e+44J</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>Epi</name><description>Rest-frame peak energy</description><unit>keV</unit><ucd>phys.energy</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>E_Epi</name><description>Upper error on Epi</description><unit>keV</unit><ucd>stat.error;stat.max</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>e_Epi</name><description>Lower error on Epi</description><unit>keV</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Type</name><description>Classification of the burst (3)</description><ucd>src.class</ucd><dataType xsi:type="vs:VOTableType" arraysize="7*">char</dataType></column><column><name>Exp</name><description>Experiment used for the calculation on T_90,i_, E_p,i_ and E_iso_ values</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType" arraysize="10*">char</dataType></column><column><name>Ref</name><description>References</description><ucd>meta.ref</ucd><dataType xsi:type="vs:VOTableType" arraysize="15*">char</dataType></column><column><name>EH</name><description>Energy-hardness parameter (EH) (4)</description><ucd>stat.fit.param</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>EHtype</name><description>GRB type corresponding to the EH parameter</description><ucd>src.class</ucd><dataType xsi:type="vs:VOTableType" arraysize="2*">char</dataType></column><column><name>EHD</name><description>Energy-Hardness-Duration parameter (EHD) (5)</description><ucd>stat.fit.param</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>EHDtype</name><description>GRB type corresponding to the EHD parameter</description><ucd>src.class</ucd><dataType xsi:type="vs:VOTableType" arraysize="2*">char</dataType></column><column><name>_RA</name><description>Right Ascension (J2000) from SIMBAD (not part of the original data)</description><unit>deg</unit><ucd>pos.eq.ra;meta.main</ucd></column><column><name>_DE</name><description>Declination (J2000) from SIMBAD (not part of the original data)</description><unit>deg</unit><ucd>pos.eq.dec;meta.main</ucd></column></table><table><name>J/MNRAS/492/1919/refs</name><description>References for Table A1</description><column><name>recno</name><description>Record number assigned by the VizieR team. 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