Comprehensive Analysis Of The Transient X-Ray Pulsar Maxı J1409 619

Şahiner, Şeyda; İnam, Sıtkı Çağdaş; ., ve diğer.

Comprehensive Analysis Of The Transient X-Ray Pulsar Maxı J1409 619

dc.authorid	308237	en_US
dc.authorid	4054	en_US
dc.contributor.author	Şahiner, Şeyda
dc.contributor.author	İnam, Sıtkı Çağdaş
dc.contributor.author	., ve diğer.
dc.date.accessioned	2020-10-12T14:03:32Z
dc.date.available	2020-10-12T14:03:32Z
dc.date.issued	2020
dc.department	İstanbul Beykent Üniversitesi	en_US
dc.description.abstract	We probe the properties of the transient X-ray pulsar MAXI J1409-619 through RXTE and Swift follow-up observations of the outburst in 2010. We are able to phase-connect the pulse arrival times for the 25 d episode during the outburst. We suggest that either an orbital model (with P-orb similar or equal to 14.7(4) d) or a noise process due to random torque fluctuations (with S-r approximate to 1.3 x 10(-18) Hz(2) S-2 Hz(-1)) is plausible to describe the residuals of the timing solution. The frequency derivatives indicate a positive torque-luminosity correlation, which implies temporary accretion disc formation during the outburst. We also discover several quasiperiodic oscillations in company with their harmonics whose centroid frequencies decrease as the source flux decays. The variation of the pulsed fraction and spectral power-law index of the source with X-ray flux is interpreted as the sign of transition from a critical to a subcritical accretion regime at the critical luminosity within the range of 6 x 10(37)-1.2 x 10(38) erg s(-1). Using pulse-phase-resolved spectroscopy, we show that the phases with higher flux tend to have lower photon indices, indicating that the polar regions produce spectrally harder emission.	en_US
dc.identifier.citation	Monthly Notıces Of The Royal Astronomıcal Socıety, 496(2), 1768-1783	en_US
dc.identifier.doi	10.1093/mnras/staa1562
dc.identifier.issn	2630-5488
dc.identifier.scopus	2-s2.0-85101339513	en_US
dc.identifier.scopusquality	N/A	en_US
dc.identifier.uri	https://doi.org/10.1093/mnras/staa1562
dc.identifier.wos	WOS:000561118000056	en_US
dc.identifier.wosquality	Q1	en_US
dc.indekslendigikaynak	Web of Science	en_US
dc.indekslendigikaynak	Scopus	en_US
dc.language.iso	en	en_US
dc.publisher	Oxford University Press	en_US
dc.relation.publicationcategory	Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı	en_US
dc.subject	Stars	en_US
dc.subject	Neutron - Pulsars	en_US
dc.subject	İndividual	en_US
dc.subject	MAXI J1409−619	en_US
dc.subject	Acretion	en_US
dc.title	Comprehensive Analysis Of The Transient X-Ray Pulsar Maxı J1409 619	en_US
dc.type	Article	en_US