Zobrazeno 1 - 10
of 2 399
pro vyhledávání: '"Pandey, J."'
We present the preliminary timing analysis of confirmed intermediate polar UU Col and possible intermediate polar Swift J0939.7-3224 in the optical band with the help of long-term, high-cadence continuous photometry from Transiting Exoplanet Survey S
Externí odkaz:
http://arxiv.org/abs/2307.12962
Autor:
Joshi, Arti, Rawat, Nikita, Schwope, Axel, Pandey, J. C., Scaringi, Simone, Sahu, D. K., Rao, Srinivas M, Singh, Mridweeka
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 Observatory (Swif
Externí odkaz:
http://arxiv.org/abs/2304.00099
Autor:
Rawat, Nikita, Pandey, J. C., Joshi, Arti, Potter, Stephen B., Hojaev, Alisher S., De Becker, Michaël, Rao, Srinivas M, Yadava, Umesh
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 where a phase shift was seen,
Externí odkaz:
http://arxiv.org/abs/2302.10002
Autor:
Lata, Sneh, Chen, W. P., Pandey, J. C., Dileep, Athul, Ai, Zhong-Han, Hojaev, Alisher S., Panwar, Neelam, Joshi, Santosh, Mondal, Soumen, Biswas, Siddhartha, Bhatt, B. C.
We present stellar variability towards the young open cluster NGC\,6823. Time series $V$- and $I$-band CCD photometry led to identification and characterization of 88 variable stars, of which only 14 have been previously recognized. We ascertain the
Externí odkaz:
http://arxiv.org/abs/2301.02399
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. The X-ray
Externí odkaz:
http://arxiv.org/abs/2209.11141
Autor:
Singh, Gurpreet, Pandey, J. C.
We present a detailed X-ray analysis and imaging of stellar coronae of five coronally connected eclipsing binaries, namely, 44 Boo, DV Psc, ER Vul, XY UMa, and TX Cnc. Both components of these binaries are found to be active. The X-ray light curves o
Externí odkaz:
http://arxiv.org/abs/2207.04253
The relative orientation between local magnetic field and Galactic plane in low latitude dark clouds
Autor:
Choudhury, Gulafsha B., Das, Himadri S., Medhi, B. J., Pandey, J. C., Wolf, S., Dhar, T. K., Mazarbhuiya, A. M.
In this work, we study the magnetic field morphology of selected star-forming clouds spread over the galactic latitude ($b$) range, $-10^\circ$ to $10^\circ$. The polarimetric observation of clouds CB24, CB27 and CB188 are conducted to study the magn
Externí odkaz:
http://arxiv.org/abs/2205.04964
We present optical photometric and spectroscopic observations of two Cataclysmic Variables (CVs), namely RBS 0490 and SDSS J075939.79+191417.3. The optical variations of RBS 0490 have been found to occur at the period of 1.689$\pm$0.001 hr which appe
Externí odkaz:
http://arxiv.org/abs/2203.17198
We have carried out detailed time-resolved timing analyses of three cataclysmic variables (CVs) namely LS Cam, V902 Mon, and SWIFT J0746.3-1608, using the long-baseline, high-cadence optical photometric data from the Transiting Exoplanet Survey Satel
Externí odkaz:
http://arxiv.org/abs/2203.17088
Autor:
Joshi, A., Wang, W., Pandey, J. C., Singh, K. P., Naik, S., Raj, A., Anupama, G. C., Rawat, N.
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 previous o
Externí odkaz:
http://arxiv.org/abs/2112.06270