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dc.contributor.authorLAMB, F. K.
dc.contributor.authorChenevez, J.
dc.contributor.authorCHAKRABARTY, D.
dc.contributor.authorCackett, E. M.
dc.contributor.authorBult, P.
dc.contributor.authorARZOUMANIAN, Z.
dc.contributor.authorKEEK, L.
dc.contributor.authorMILLER, J. M.
dc.contributor.authorMARKWARDT, C. B.
dc.contributor.authorMAHMOODIFAR, S.
dc.contributor.authorLUDLAM, R. M.
dc.contributor.authorPRIGOZHIN, G.
dc.contributor.authorSOONG, Y.
dc.contributor.authorSTROHMAYER, T. E.
dc.contributor.authorWOLFF, M. T.
dc.contributor.authorGuver, Tolga
dc.contributor.authorJaisawal, G. K.
dc.contributor.authorHOMAN, J.
dc.contributor.authorGUILLOT, S.
dc.contributor.authorGENDREAU, K. C.
dc.contributor.authorFabian, A. C.
dc.date.accessioned2021-03-04T09:48:21Z
dc.date.available2021-03-04T09:48:21Z
dc.date.issued2018
dc.identifier.citationKEEK L., ARZOUMANIAN Z., Bult P., Cackett E. M. , CHAKRABARTY D., Chenevez J., Fabian A. C. , GENDREAU K. C. , GUILLOT S., Guver T., et al., "NICER Observes the Effects of an X-Ray Burst on the Accretion Environment in Aql X-1", ASTROPHYSICAL JOURNAL LETTERS, cilt.855, sa.1, 2018
dc.identifier.issn2041-8205
dc.identifier.otherav_6a029ce1-5684-4e17-ac5a-fce4e5e67067
dc.identifier.othervv_1032021
dc.identifier.urihttp://hdl.handle.net/20.500.12627/73409
dc.identifier.urihttps://doi.org/10.3847/2041-8213/aab104
dc.description.abstractAccretion disks around neutron stars regularly undergo sudden strong irradiation by Type-I X-ray bursts powered by unstable thermonuclear burning on the stellar surface. We investigate the impact on the disk during one of the first X-ray burst observations with the Neutron Star Interior Composition Explorer (NICER) on the International Space Station. The burst is seen from Aql X-1 during the hard spectral state. In addition to thermal emission from the neutron star, the burst spectrum exhibits an excess of soft X-ray photons below 1 keV, where NICER's sensitivity peaks. We interpret the excess as a combination of reprocessing by the strongly photoionized disk and enhancement of the pre-burst persistent flux, possibly due to Poynting-Robertson drag or coronal reprocessing. This is the first such detection for a short sub-Eddington burst. As these bursts are observed frequently, NICER will be able to study how X-ray bursts affect the disk and corona for a range of accreting neutron star systems and disk states.
dc.language.isoeng
dc.subjectUzay bilimi
dc.subjectTemel Bilimler
dc.subjectASTRONOMİ VE ASTROFİZİK
dc.subjectAstronomi ve Astrofizik
dc.subjectTemel Bilimler (SCI)
dc.subjectFizik
dc.titleNICER Observes the Effects of an X-Ray Burst on the Accretion Environment in Aql X-1
dc.typeMakale
dc.relation.journalASTROPHYSICAL JOURNAL LETTERS
dc.contributor.department, ,
dc.identifier.volume855
dc.identifier.issue1
dc.contributor.firstauthorID87666


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