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NICER Detection of Thermal X-Ray Pulsations from the Massive Millisecond Pulsars PSR J0740+6620 and PSR J1614–2230
- Source :
- The Astrophysical journal letters, The Astrophysical journal letters, Bristol : IOP Publishing, 2021, 918 (2), pp.L26. ⟨10.3847/2041-8213/ac158e⟩, Astrophys.J.Lett., Astrophys.J.Lett., 2021, 918 (2), pp.L26. ⟨10.3847/2041-8213/ac158e⟩
- Publication Year :
- 2021
- Publisher :
- HAL CCSD, 2021.
-
Abstract
- We report the detection of X-ray pulsations from the rotation-powered millisecond-period pulsars PSR J0740+6620 and PSR J1614-2230, two of the most massive neutron stars known, using observations with the Neutron Star Interior Composition Explorer (NICER). We also analyze X-ray Multi-Mirror Mission (XMM-Newton) data for both pulsars to obtain their time-averaged fluxes and study their respective X-ray fields. PSR J0740+6620 exhibits a broad double-peaked profile with a separation of ~0.4 in phase. PSR J1614-2230, on the other hand, has a broad single-peak profile. The broad modulations with soft X-ray spectra of both pulsars are indicative of thermal radiation from one or more small regions of the stellar surface. We show the NICER detections of X-ray pulsations for both pulsars and also discuss the phase relationship to their radio pulsations. In the case of PSR J0740+6620, this paper documents the data reduction performed to obtain the pulsation detection and prepare for pulse profile modeling analysis.<br />Submitted to The Astrophysical Journal Letters
- Subjects :
- [PHYS]Physics [physics]
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics
Neutron Star Interior Composition Explorer
010308 nuclear & particles physics
Astrophysics::High Energy Astrophysical Phenomena
X-ray binary
FOS: Physical sciences
Astronomy and Astrophysics
Astrophysics
16. Peace & justice
01 natural sciences
Spectral line
Neutron star
Pulsar
Space and Planetary Science
Millisecond pulsar
Thermal radiation
[SDU]Sciences of the Universe [physics]
0103 physical sciences
Astrophysics - High Energy Astrophysical Phenomena
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
Data reduction
Subjects
Details
- Language :
- English
- ISSN :
- 20418205 and 20418213
- Database :
- OpenAIRE
- Journal :
- The Astrophysical journal letters, The Astrophysical journal letters, Bristol : IOP Publishing, 2021, 918 (2), pp.L26. ⟨10.3847/2041-8213/ac158e⟩, Astrophys.J.Lett., Astrophys.J.Lett., 2021, 918 (2), pp.L26. ⟨10.3847/2041-8213/ac158e⟩
- Accession number :
- edsair.doi.dedup.....fe73741e601a98d9cd7ad5603f448920