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Browsing by Subject "accretion, accretion discs"

Browsing by Subject "accretion, accretion discs"

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  • Confirmation of two magnetic cataclysmic variables as polars: 1RXS J174320.1−042953 and YY Sex 
    Rawat, Nikita; Pandey, J. C. , et.al.; Rao, Srinivas M (Monthly Notices of the Royal Astronomical Society, 2023-05)
    We present our analysis of new and archived observations of two candidate magnetic cataclysmic variables, namely 1RXS J174320.1−042953 and YY Sex. 1RXS J174320.1−042953 was observed in two distinctive high and low states ...
  • Quiet, but not silent: uncovering quiescent state properties of two transient high-mass X-ray binaries 
    Raman, Gayathri; Varun; Pradhan, Pragati; Kennea, Jamie (Monthly Notices of the Royal Astronomical Society, 2023-12)
    We present the first set of broad-band spectral and timing studies of two transient X-ray pulsars, MXB 0656−072 and MAXI J1409−619 using NuSTAR observations conducted during quiescence. Despite being captured at one of ...
  • Refining the OJ 287 2022 impact flare arrival epoch 
    Valtonen, Mauri J. , et.al.; Gupta, Alok C. (Monthly Notices of the Royal Astronomical Society, 2023-06)
    The bright blazar OJ 287 routinely parades high brightness bremsstrahlung flares, which are explained as being a result of a secondary supermassive black hole (SMBH) impacting the accretion disc of a more massive primary ...
  • SWIFT J0503.7-2819: a nearly synchronous intermediate polar below the period gap? 
    Rawat, Nikita; Pandey, J. C.; Joshi, Arti; Scaringi, Simone; Yadava, Umesh (Monthly Notices of the Royal Astronomical Society, 2022-12)
    Based on the X-ray observations from XMM–Newton and Swift, and optical observations from Transiting Exoplanet Survey Satellite (TESS) and AAVSO, we present temporal and spectral properties of probable intermediate polar ...
  • Two-temperature accretion flows around strongly magnetized stars and their spectral analysis 
    Sarkar, Shilpa; Singh, Kuldeep; Chattopadhyay, Indranil; Laurent, Philippe (Monthly Notices of the Royal Astronomical Society, 2023-07)
    We investigate two-temperature accretion flows onto strongly magnetized compact stars. Matter is accreted in the form of an accretion disc upto the disc radius (rd), where, the magnetic pressure exceeds both the gas and ...
  • Unravelling optical and X-ray properties of the disc-dominated intermediate polar IGR J15094-6649 
    Joshi, Arti, et.al.; Rawat, Nikita; Pandey, J. C.; Rao, Srinivas M (Monthly Notices of the Royal Astronomical Society, 2023-06)
    We present analyses of an Intermediate Polar, IGR J15094-6649, based on the archival optical data obtained from the Transiting Exoplanet Survey Satellite (TESS) and X-ray data obtained from the Suzaku, NuSTAR, and Neil ...

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