J/MNRAS/449/268ivo://CDS.VizieR/J/MNRAS/449/268doi:10.26093/cds/vizier.74490268CDSBagnoli T.In't Zand J.J.M.D'angelo C.R.Galloway D.K.2024-08-14T20:21:05Z2016-01-06T15:06:41ZCDS support team

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

cds-question@unistra.frx-ray-binary-starsgamma-ray-astronomyType II bursts are thought to arise from instabilities in the accretion flow on to a neutron star in an X-ray binary. Despite having been known for almost 40 years, no model can yet satisfactorily account for all their properties. To shed light on the nature of this phenomenon and provide a reference for future theoretical work, we study the entire sample of Rossi X-ray Timing Explorer data of type II bursts from the Rapid Burster (MXB 1730-335). We find that type II bursts are Eddington-limited in flux, that a larger amount of energy goes in the bursts than in the persistent emission, that type II bursts can be as short as 0.130s, and that the distribution of recurrence times drops abruptly below 15-18s. We highlight the complicated feedback between type II bursts and the NS surface thermonuclear explosions known as type I bursts, and between type II bursts and the persistent emission. We review a number of models for type II bursts. While no model can reproduce all the observed burst properties and explain the source uniqueness, models involving a gating role for the magnetic field come closest to matching the properties of our sample. The uniqueness of the source may be explained by a special combination of magnetic field strength, stellar spin period and alignment between the magnetic field and the spin axis.2015MNRAS.449..268Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/449/268CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/449/268https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/449/268http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/449/268https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/449/268https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/449/268http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/449/268GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapGamma-raydefaultJ/MNRAS/449/268/tableBurst properties for the entire samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFlag[0/1] Contamination flag (1)meta.code.errorintObsIDObservation IDmeta.id;obscharModeBurst modesrc.classcharFpersminMinima of persistent flux measured in a 8-s long interval before the burstct/sphot.count;em.gamma.hardfloatFtot? Total average flux (persistent+burst) within a recurrence timephot.flux.density;em.gamma.harddoublenullablen_Ftot[i] i for infinitymeta.notecharEpersPTotal persistent fluence before a burst (2)phot.fluence;em.gamma.harddoubleEperNTotal persistent fluence after a burst (3)phot.fluence;em.gamma.harddoubleEpersPsTotal persistent fluence before a burst, after subtracting Fpersmin*Delta_t (4)phot.fluence;em.gamma.harddoubleEpersNsTotal persistent fluence after a burst, after subtracting Fpersmin*Delta_t (4)phot.fluence;em.gamma.harddoubleTstartBurst start time, METstime.startdoubleDurDurationstime.durationfloatFpeakNet peak flux [c/s/pcu] (after subtracting persistent and background counts)ct/sphot.count;em.gamma.hardfloatEbNet burst energy [c/PCU] (after subtracting persistent and background counts)ctphot.fluence;em.gamma.harddoubleDtPDuration of the previous burst, if =0: no continuous data to the prev burststime.durationfloatDtNDuration of the next burst, if =0: no continuous data to the next burststime.durationdoublel_alphaPUpper limit flag (eg if data gap) on alphaPmeta.code.errorcharalphaPBackward-defined alpha value (5)stat.fit.paramfloatl_alphaNUpper limit flag (eg if data gap) on alphaNmeta.code.errorcharalphaNforward-defined alpha value (6)stat.fit.paramdouble