6 citations · 16 across the 17 of their papers we have counts for
18 papers
The X-ray and optical emission of the intermediate polar Swift J0614.0+1709
Nikita Rawat, Domitilla De Martino, David A. H. Buckley +5
We present the first detailed X-ray and optical study of the intermediate polar Swift J0614.0+1709 based on a pointed XMM-Newton observation complemented by long-term optical photo…
Commissioning and on-sky performance of FiberPol: a fiber-fed spectropolarimetric system for the SAAO 1.9 m telescope
Siddharth Maharana, K. C. J. Dennison-Farrar, Sabyasachi Chattopadhyay +8
At the South African Astronomical Observatory (SAAO), we have developed FiberPol a spectropolarimetric front-end for the SpUpNIC spectrograph on the 1.9 m telescope fed by fiber…
A very rapidly rotating white dwarf in nova YZ Reticuli
G. J. M. Luna, N. Rawat, R. Angeloni +4
YZ Ret (Nova Reticuli 2020) is the first VY Scl-type nova-like variable observed to undergo a classical nova eruption. Following the outburst, timing analysis of 20-s cadence TESS…
Multi-wavelength outburst activity from EP J174942.2-384834: a very faint X-ray transient discovered by Einstein Probe
F. Coti Zelati, A. Marino, Y. L. Wang +27
We report the discovery and multi-wavelength characterization of the Galactic transient EP J174942.2384834, first detected by the Einstein Probe during a faint X-ray outburst in…
A Catalogue of Orbital Periods of Cataclysmic Variables and Candidates from TESS Observations
Meryem K. Dağ, Simone Scaringi, Kieran O'Brien +21
We present a systematic analysis of 2544 cataclysmic variable systems and related candidates observed by the Transiting Exoplanet Survey Satellite (TESS), with the aim of compiling…
A probable inside-out dwarf nova outburst from the period bouncer candidate ASASSN-25dc
Yusuke Tampo, Naoto Kojiguchi, Mariko Kimura +13
We report optical time-resolved photometric observations of a newly-discovered outbursting system, ASASSN-25dc. Its 8-mag amplitude, 40-day duration, 1-mag dip in the outburst plat…
V515 And: An Intermediate Polar in the Period Gap Exhibiting Outbursts
Srinivas M Rao, Jeewan C Pandey, Nikita Rawat +4
Using long-term observations from the Transiting Exoplanet Survey Satellite (TESS) along with spectroscopic observations from the 3.6 m Devasthal Optical Telescope (DOT), we presen…
An extremely fast fading population II dwarf nova candidate: caught spectroscopically on the rise
Natasha Van Bemmel, Jielai Zhang, Jeff Cooke +14
We present AT2022kak, a rapidly evolving optical transient discovered by the KiloNova and Transients Program (KNTraP). This interesting burst exhibited extremely fast evolution, wi…
Long-term Optical Photometry of V709 Cas Using TESS : Refined Periods and Accretion Geometry
Srinivas M Rao, Jeewan C Pandey, Nikita Rawat +2
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 Pol…
Precise Timing Analysis of Four Magnetic Cataclysmic Variables with TESS
Srinivas M Rao, Jeewan C Pandey, Nikita Rawat +2
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 object…
Unveiling the nature of two dwarf novae: CRTS J080846.2+313106 and V416 Dra
Arti Joshi, Márcio Catelan, Simone Scaringi +8
We present the analysis of optical photometric and spectroscopic observations of two non-magnetic cataclysmic variables, namely CRTS J080846.2+313106 and V416 Dra. CRTS J080846.2+3…
AstroSat investigation of X-ray flares on two active K-M systems: CC Eri and AB Dor
Subhajeet Karmakar, Jeewan C. Pandey, Nikita Rawat +2
We present an X-ray and UV investigation of five X-ray flares detected on two active systems, CC Eri and AB Dor, using the AstroSat observatory. The peak X-ray luminosities of the…
X-ray observations of the Intermediate Polar TX Col
Jeewan Chandra Pandey, Nikita Rawat, Srinivas M. Rao +2
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, r…
Timing Analysis of the Intermediate Polar V709 Cas
Srinivas M Rao, Jeewan Chandra Pandey, Nikita Rawat +1
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 Exoplan…
Unravelling optical and X-ray properties of the disc-dominated intermediate polar IGR J15094-6649
Arti Joshi, Nikita Rawat, Axel Schwope +5
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 obta…
Confirmation of two magnetic cataclysmic variables as polars: 1RXS J174320.1-042953 and YY Sex
Nikita Rawat, J. C. Pandey, Arti Joshi +5
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 observe…
Probable low-frequency quasi-periodic oscillations in blazars from the ZTF survey
Anuvab Banerjee, Vibhore Negi, Ravi Joshi +6
We investigate the possible presence of quasi-periodic oscillation (QPO) signals in 2103 blazars from the Zwicky Transient Facility (ZTF) time-domain survey. We detect a low-freque…
X-ray confirmation of the intermediate polar IGR J16547-1916
A. Joshi, W. Wang, J. C. Pandey +5
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…