A systematic search for periodicities of X-ray binaries in the Swift BAT data

Poggiani, R.

doi:10.22323/1.233.0157

Cited by 1 publication

(2 citation statements)

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“…The orbital periods of Sco X-1 and Cyg X-2 have been determined by the optical spectroscopy of their optical counterparts. An alternative method is the systematic search of orbital periodicities in the archives of X-ray observatories [40], that will be presented in the next section.…”

Section: Gravitational Wave Emission Of X-ray Binariesmentioning

confidence: 99%

“…There are a few systematic investigations of the periodicities of X-ray binaries in the RXTE/ASM [48], [35], [31] and the Swift/BAT [17] archives. A systematic search has been started by [40] in the Swift/BAT (15-50 keV) [32] and RXTE/ASM (2-12 keV) [34] archives to discover new periodicities, to confirm and to improve known ones. The search has been performed with the SparSpec algorithm [12].…”

Section: Search For Orbital Periods In X-ray Binariesmentioning

confidence: 99%

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The importance of transient X-ray sources for gravitational wave physics

Poggiani¹

2017

Proceedings of Frontier Research in Astrophysics – II — PoS(FRAPWS2016)

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The recent discovery of gravitational waves has opened a new window in observational astronomy. The X-ray sources are interesting targets of gravitational astronomy, among them X-ray binaries. Accreting neutron stars are candidates for continuous emission of gravitational waves in the sensitivity band of the advanced LIGO/Virgo interferometers. The X-ray binaries are also potential emitters of low frequency gravitational radiation in the frequency band of the forthcoming space based interferometer eLISA. The accurate knowledge of the orbital period of the X-ray binaries is necessary to estimate the gravitational emission at low frequency and to reduce the computational cost of searching the signal from accreting neutron stars. The systematic search for periodicities in the archives of X-ray missions can detect the required orbital periods and, in addition, superorbital periods. The preliminary results of a search for periodicities in the Swift/BAT and RXTE/ASM archives is presented, showing also how the estimated periodicities can provide information about the characteristics of the astrophysical sources.

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Section: Gravitational Wave Emission Of X-ray Binariesmentioning

confidence: 99%