English
Related papers

Related papers: A preliminary timing analysis of two intermediate …

200 papers

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

Aims. We intend to establish the X-ray properties of Swift J0732.5-1331 and therefore confirm its status as an intermediate polar. Method. We analysed 36,240 s of X-ray data from RXTE. Frequency analysis was used to constrain temporal…

Astrophysics · Physics 2009-11-13 O. W. Butters , E. J. Barlow , A. J. Norton , K. Mukai

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

This study presents a detailed timing analyses of two cataclysmic variables (CVs), [PK2008] HalphaJ115927 and IGR J14091-610, utilizing the optical data from the Transiting Exoplanet Survey Satellite (TESS). Periods of 7.20$\pm$0.02 h,…

Solar and Stellar Astrophysics · Physics 2025-04-23 Arti Joshi

We analyze a 7.4 hr XMM-Newton light curve of the cataclysmic variable Swift J0503.7-2819, previously classified using optical periods as an intermediate polar (IP) with an orbital period of 0.0567 days. A photometric signal at 975 s,…

High Energy Astrophysical Phenomena · Physics 2022-08-17 J. P. Halpern

Detailed timing analyses of three cataclysmic variables, namely 2MASS J09213414$-$5939068, IGR J16167$-$4957, and V667 Pup are carried out using the long-baseline and high-cadence optical photometric data from the Transiting Exoplanet…

Solar and Stellar Astrophysics · Physics 2024-01-30 Arti Joshi

We have carried detailed time-resolved timing analysis of an intermediate polar V709 Cas using the long-baseline, short-cadence optical photometric data from the Transiting Exoplanet Survey Satellite. We found an orbital period of 5.3341…

Solar and Stellar Astrophysics · Physics 2025-06-09 Srinivas M Rao , Jeewan Chandra Pandey , Nikita Rawat , Arti Joshi

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…

We present the timing analysis of the intermediate polar TX Col in the X-ray band using the observations made by Chandra, Swift, and Suzaku during the years 2000, 2007, and 2009, respectively. The spin, orbital, and beat periods derived…

High Energy Astrophysical Phenomena · Physics 2023-09-08 Jeewan Chandra Pandey , Nikita Rawat , Srinivas M. Rao , Arti Joshi , Sadhana Singh

Using the first long-term photometry from the Transiting Exoplanet Survey Satellite, we have carried out a detailed time-resolved timing analysis of an intermediate polar TX Col. The power spectra of almost 52 days continuous time-series…

Solar and Stellar Astrophysics · Physics 2021-05-12 Nikita Rawat , J. C. Pandey , Arti Joshi

We report on the Swift/XRT Deep Galactic Plane Survey discovery and multi-wavelength follow-up observations of a new intermediate polar Cataclysmic Variable, Swift J183920.1-045350. A 449.7 s spin period is found in Xmm-Newton and NuSTAR…

We analysed high time-resolution optical photometric data from the Transiting Exoplanet Survey Satellite (TESS) to study the timing behaviour of four intermediate polar-like objects, namely, V1460 Her, 1RXS J045707.4+452751, Swift…

Solar and Stellar Astrophysics · Physics 2025-06-06 Srinivas M Rao , Jeewan C Pandey , Nikita Rawat , Arti Joshi , Ajay Kumar Singh

Utilizing high-cadence and long-term optical photometry from the Transiting Exoplanet Survey Satellite (TESS ), we conducted a time-resolved timing analysis of the Intermediate Polar, V709 Cas. Our analysis reveals key characteristics of…

Solar and Stellar Astrophysics · Physics 2025-07-28 Srinivas M Rao , Jeewan C Pandey , Nikita Rawat , Arti Joshi , Ajay Kumar Singh

The detection of the orbital period of 4.36his reported for the new Intermediate Polar 1 WGA 1958.2+3232. The orbital period was derived from time-resolved photometric and spectral observations. We also confirmed the 733 sec spin period of…

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 conducted time-resolved optical spectroscopy and/or photometry of ten cataclysmic binaries that were discovered in hard X-ray surveys, with the goal of measuring their orbital periods and searching for evidence that they are magnetic.…

High Energy Astrophysical Phenomena · Physics 2022-01-19 J. P. Halpern , J. R. Thorstensen

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

We present multi-wavelength temporal and spectral characteristics of a magnetic cataclysmic variable (MCV) Swift J0503.7-2819, using far ultraviolet (FUV) and X-ray data from AstroSat, supplemented with optical data from the Southern…

From a set of thirteen cataclysmic binaries that were discovered in the Swift Burst Alert Telescope (BAT) survey, we conducted time-resolved optical spectroscopy and/or time-series photometry of eleven, with the goal of measuring their…

High Energy Astrophysical Phenomena · Physics 2015-11-11 J. P. Halpern , J. R. Thorstensen

Optical time series photometry of the short period magnetic white dwarf + probable brown dwarf binary SDSS 121209.31+013627.7 reveals pulse-like variability in all bands from i' to u', peaking at u'. These modulations are most likely due to…

‹ Prev 1 2 3 10 Next ›