Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Kandulapati Sriram"'
The connection of type-B QPOs to the hot flow in the inner accretion disk region is vaguely understood in black hole X-ray binaries. We performed spectral and timing studies of twenty-three observations where type-C and type-B QPOs with similar centr
Externí odkaz:
http://arxiv.org/abs/2209.01643
Publikováno v:
Publications of the Astronomical Society of Japan. 75:476-488
Chromospherically active binaries are important in the understanding of the origins of optical flares. Since studies of flares in binaries are important, we perform a detailed analysis of 11 flares emitted by the RS CVn binary source CF Tucanae using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af1818031aad992dd0ae10f744e0623b
https://doi.org/10.1093/pasj/psad013
https://doi.org/10.1093/pasj/psad013
Neutron star Z type sources provide a unique platform in order to understand the structure of accretion disk-corona geometry emitting close to the Eddington luminosity. Using RXTE and NuSTAR satellite data, we performed cross correlation function (CC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::205569821f872f4891a5891d8f94ba90
http://arxiv.org/abs/2209.01602
http://arxiv.org/abs/2209.01602
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 506:6203-6211
For the first time, simultaneous broad-band spectral and timing study of the atoll source 4U 1705-44 was performed using AstroSat Soft X-ray Telescope (SXT) and Large Area X-ray Proportional Counter (LAXPC) data (0.8–70 keV). Based on the HID, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c509d1a30f86a57389b0e34c41bc9a2c
https://doi.org/10.1093/mnras/stab1892
https://doi.org/10.1093/mnras/stab1892
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 499:2214-2228
We performed spectro-temporal analysis in the 0.8--50 keV energy band of the neutron star Z source GX 17+2 using AstroSat Soft X-ray Telescope (SXT) and Large Area X-ray Proportional Counter (LAXPC) data. The source was found to vary in the normal br
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d9861ca444d0072e9165e721ab68fc6
https://doi.org/10.1093/mnras/staa2939
https://doi.org/10.1093/mnras/staa2939
Publikováno v:
Journal of Astrophysics and Astronomy. 42
We performed the timing and spectral studies of a Z source GX 17+2 observed from Astrosat LAXPC instrument. Cross-Correlation function (CCF) was performed using soft (3-5 keV) and hard (16-40 keV) X -ray bands across the hardness intensity diagram an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73b38ac9e3f6fc040f10558d20667bd7
https://doi.org/10.1007/s12036-021-09760-0
https://doi.org/10.1007/s12036-021-09760-0
An appearance or disappearance of QPOs associated with the variation of X-ray flux can be used to decipher the accretion ejection mechanism of black hole X-ray sources. We searched and studied such rapid transitions in H1743-322 using RXTE archival d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46fad8085de5360a5f743803c86e7ed0
http://arxiv.org/abs/2103.02422
http://arxiv.org/abs/2103.02422
We performed a detailed timing study of the Atoll source 4U 1705-44 in order to understand the accretion disk geometry. Cross correlation function (CCF) studies were performed between soft (3-5 keV) and hard energy (15-30 keV) bands using the AstroSa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0fa49cefdcb3a5a9d43258bd937ca804
Publikováno v:
Research in Astronomy and Astrophysics. 14:1166-1172
CCD photometric observations with B and V passbands were performed on the contact binary V3 in the field of open cluster M37. The solutions were obtained for data from both B and V passbands along with R passband given by Hartman et al. using the Wil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edc316aaa92aeb06f670060b2c294df3
https://doi.org/10.1088/1674-4527/14/9/007
https://doi.org/10.1088/1674-4527/14/9/007
Publikováno v:
Publications of The Korean Astronomical Society. 30:599-601
The short time scale X-ray variability associated with the accretion disk around compact objects is complex and is vaguely understood. The study of the cross correlation function gives an insight into the energy dependent behavior of the variations a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6971d3b93b90dbd01349e6aa45e8e9c5
https://doi.org/10.5303/pkas.2015.30.2.599
https://doi.org/10.5303/pkas.2015.30.2.599