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Related papers: X-ray Confirmation of the Intermediate Polar HT Ca…

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We report the first time-resolved photometric and spectroscopic optical observations of the X-ray source RX J2133.7+5107, identified in the ROSAT survey. A clear persistent optical light pulsation is discovered with fast photometry at a…

Astrophysics · Physics 2009-11-11 J. M. Bonnet-Bidaud , M. Mouchet , D. de Martino , R. Silvotti , C. Motch

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 SWIFT J0503.7-2819.…

High Energy Astrophysical Phenomena · Physics 2022-10-05 Nikita Rawat , J. C. Pandey , Arti Joshi , Simone Scaringi , Umesh Yadava

The intermediate polar HT Cam is unusual in that it shows no evidence for dense absorption in its spectrum. We analyse an XMM-Newton observation of this star, which confirms the absence of absorption and shows that the X-ray spin-pulse is…

Astrophysics · Physics 2009-11-10 P. A. Evans , Coel Hellier

We present the first X-ray observations with the XMM-Newton and INTEGRAL satellites of the recently discovered cataclysmic variable 1RXSJ173021.5-055933, together with simultaneous UV and coordinated optical photometry aiming at…

We analyze the first X-ray observations with XMM-Newton of RXS J070407.9+262501 and 1RXS 180340.0+401214, in order to characterize their broad-band temporal and spectral properties, also in the UV/optical domain, and to confirm them as…

We present our findings from the first long X-ray observation of the hard X-ray source Swift J0826.2-7033 with XMM-Newton, which has shown characteristics of magnetic accretion. The system appears to have a long orbital period (~7.8 h)…

High Energy Astrophysical Phenomena · Physics 2024-11-20 Nikita Rawat , Domitilla De Martino , Koji Mukai , Maurizio Falanga , Nicola Masetti , Jeewan C. Pandey

Using X-ray observations from the NuSTAR and Swift satellites, we present temporal and spectral properties of an intermediate polar (IP) IGR J16547-1916. A persistent X-ray period at ~ 546 s confirming the optical spin period obtained from…

High Energy Astrophysical Phenomena · Physics 2022-01-05 A. Joshi , W. Wang , J. C. Pandey , K. P. Singh , S. Naik , A. Raj , G. C. Anupama , N. Rawat

We present analysis of archival X-ray data obtained with the XMM-Newton and Suzaku for a new Intermediate Polar identified as a counterpart of an INTEGRAL discovered gamma-ray source, IGR J17195-4100. We report a new period of 1053.7\pm12.2…

High Energy Astrophysical Phenomena · Physics 2015-06-11 V. Girish , K. P. Singh

We report the identification of the ROSAT all-sky survey source 1RXS J154814.5-452845as new intermediate polar and present the results from follow-up optical and X-ray observations. The source shows pulsations with a period of 693 s both in…

Astrophysics · Physics 2009-11-07 F. Haberl , C. Motch , F. -J. Zickgraf

We present RXTE and BeppoSAX observations of the Intermediate Polar V709 Cas acquired in 1997 and 1998 respectively. The X-ray emission from 0.1 to 30keV is dominated by the strong pulsation at the rotational period of the white dwarf…

Aims: We investigate the physical nature of the X-ray emitting source 1RXS J165443.5-191620 through optical photometry and time-resolved spectroscopy. Methods: Optical photometry is obtained from a variety of telescopes all over the world…

Aims. To determine the credentials of nine candidate intermediate polars in order to confirm whether or not they are magnetic cataclysmic variables. Methods. Frequency analysis of RXTE and XMM data was used to search for temporal variations…

Solar and Stellar Astrophysics · Physics 2015-05-20 O. W. Butters , A. J. Norton , K. Mukai , J. A. Tomsick

We present results from a temporal analysis of the longest and the most sensitive X-ray observations of TV Columbae--an intermediate polar. The observations were carried out with the RXTE PCA, ROSAT PSPC, and ASCA. Data were analyzed using…

Astrophysics · Physics 2009-11-10 V. R. Rana , K. P. Singh , E. M. Schlegel , P. Barrett

We report on the XMM-Newton observation of HP Cet and Swift J0820.6-2805, two X-ray photon sources that are candidates to be members of the intermediate polar class of cataclysmic variables. If the historical optical light curve of HP Cet…

High Energy Astrophysical Phenomena · Physics 2020-09-09 A. A. Nucita , F. De Paolis , F. Strafella , D. Licchelli

XMM-Newton observations aimed at determining for the first time the broad-band X-ray properties of the faint high galactic latitude Intermediate Polar UU Col are presented. We performed X-ray timing analysis in different energy ranges of…

Intermediate polars are members of the cataclysmic variable binary stars. They are characterized by a moderately magnetized white dwarf accreting matter from a cool main-sequence companion star. In many cases, this accretion gives rise to a…

High Energy Astrophysical Phenomena · Physics 2021-01-27 A. A. Nucita , F. De Paolis , D. Licchelli , F. Strafella , G. Ingrosso , M. Maiorano

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 Gehrels Swift…

High Energy Astrophysical Phenomena · Physics 2023-04-19 Arti Joshi , Nikita Rawat , Axel Schwope , J. C. Pandey , Simone Scaringi , D. K. Sahu , Srinivas M Rao , Mridweeka Singh

We report observations of the asynchronous polar BY Cam made using XMM-Newton. We find evidence for two accretion regions which have significantly different spectra. In both regions we find evidence for hard X-ray emission from the…

Astrophysics · Physics 2009-11-07 Gavin Ramsay , Mark Cropper

We present for the first time orbital phase-resolved spectra of an intermediate polar (IP), EX Hya, together with the spin phase-resolved spectra during two different epochs using the X-ray Multi-Mirror Mission, European Photon Imaging…

High Energy Astrophysical Phenomena · Physics 2010-09-23 Y. Pekon , S. Balman

We present simultaneous optical polarimetry and X-ray data of the near synchronous polar RX J2115-5840. We model the polarisation data using the Stokes imaging technique of Potter et al. We find that the data are best modelled using a…

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