On the magnetic fields of ultraluminous X-ray pulsars
Sign Up to like & getrecommendations! Published in 2021 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/21/8/196
Abstract: So far quite a few ultraluminous X-ray (ULX) pulsars have been discovered. In this work, we construct a super-Eddington, magnetic accretion disk model to estimate the dipole magnetic field of eight ULX pulsars based on… read more here.
Keywords: magnetic fields; field solutions; magnetic field; ulx pulsars ... See more keywords
Study of recent outburst in the Be/X-ray binary RX J0209.6−7427 with AstroSat: a new ultraluminous X-ray pulsar in the Magellanic Bridge?
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1041
Abstract: We present the timing and spectral studies of RX J0209.6-7427 during its rare 2019 outburst using observations with the Soft X-ray Telescope (SXT) and Large Area X-ray Proportional Counter (LAXPC) instruments on the AstroSat satellite.… read more here.
Keywords: j0209 7427; energy; ray pulsar; ray ... See more keywords
Multiband counterparts of two eclipsing ultraluminous X-ray sources in M 51
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/sty014
Abstract: We present the discovery and interpretation of ionized nebulae around two ultraluminous X-ray sources in M 51; both sources share the rare property of showing X-ray eclipses by their companion stars, and are therefore prime… read more here.
Keywords: ulx bubble; multiband counterparts; ray sources; counterparts two ... See more keywords
Ultraluminous X-ray sources with flat-topped noise and QPO
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz1027
Abstract: We analysed the X-ray power density spectra of five ultraluminous X-ray sources (ULXs) NGC 5408 X-1, NGC 6946 X-1, M 82 X-1, NGC 1313 X-1, and IC 342 X-1 that are the only ULXs that display both flat-topped noise (FTN) and quasi-periodic oscillations (QPOs). We… read more here.
Keywords: accretion rate; flat topped; ray sources; ray ... See more keywords
The Hunt for Pulsating Ultraluminous X-ray Sources
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz3036
Abstract: Motivated by the recent discoveries that six Ultraluminous X-ray Sources (ULXs) are powered by highly super-Eddington X-ray pulsars, we searched for additional pulsating ULX (PULX) candidates by identifying sources that exhibit long-term flux variability of… read more here.
Keywords: pulsating ultraluminous; pulx; ray sources; hunt pulsating ... See more keywords
Discovery of a 0.42-s pulsar in the ultraluminous X-ray source NGC 7793 P13
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnrasl/slw218
Abstract: NGC 7793 P13 is a variable (luminosity range ∼100) ultraluminous X-ray source proposed to host a stellar-mass black hole of less than 15 M⊙ in a binary system with orbital period of 64 d and… read more here.
Keywords: source; 7793 p13; ultraluminous ray; ngc 7793 ... See more keywords
An accreting pulsar with extreme properties drives an ultraluminous x-ray source in NGC 5907
Sign Up to like & getrecommendations! Published in 2017 at "Science"
DOI: 10.1126/science.aai8635
Abstract: Spinning up an extragalactic neutron star Ultraluminous x-ray sources (ULXs) are strange objects in other galaxies that cannot be explained by conventional accretion onto stellar-mass objects. This has led to exotic interpretations, such as the… read more here.
Keywords: ngc 5907; ray source; neutron star; ray ... See more keywords