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Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 10/2016, Volume 461, Issue 4, p. 4146
  In earlier works, it was shown that the energy-dependent soft time lags observed in kHz quasi-periodic oscillations of neutron star low-mass X-ray binaries... 
Geometry | Neutron stars | Double stars | Corona | X ray astronomy | Boundary layer
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 10/2016, Volume 461, Issue 4, pp. 4146 - 4146
In earlier works, it was shown that the energy-dependent soft time lags observed in kHz quasi-periodic oscillations of neutron star low-mass X-ray binaries can... 
Coronas | Monte Carlo methods | Neutron stars | Seeds | Photons | Spectra | Time lag | Boundary layer
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 09/2016, Volume 461, Issue 3, p. 2580
  We study the dependence of the estimated size and geometry of the medium on the time-averaged spectral model assumed and on the frequency of the kHz... 
Neutron stars | Temperature | Energy | Spectrum analysis | Frequencies | Astronomy
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 09/2016, Volume 461, Issue 3, pp. 2580 - 2580
We study the dependence of the estimated size and geometry of the medium on the time-averaged spectral model assumed and on the frequency of the kHz... 
Seeds | Energy bands | Mathematical models | Spectra | Time measurements | Constraining | Time lag | Lift
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 12/2014, Volume 445, Issue 3, p. 2818
  We study the energy dependent photon variability from a thermal Comptonizing plasma that is oscillating at kHz frequencies. In particular, we solve the... 
Geometry | Plasma physics | Atoms & subatomic particles | Mathematical models | Comparative analysis
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 12/2014, Volume 445, Issue 3, pp. 2818 - 2818
We study the energy dependent photon variability from a thermal Comptonizing plasma that is oscillating at kHz frequencies. In particular, we solve the... 
Perturbation methods | Heating rate | Oscillations | Constants | Mathematical models | Photons | Spectra | Delay
Journal Article
Astrophysical Journal, ISSN 0004-637X, 12/2018, Volume 868, Issue 2, p. 125
We present X-ray spectral variability studies of the ultraluminous X-ray source (ULX) M81 X-6 using Suzaku and XAM-Newton observations performed during... 
black hole physics | X-rays: binaries | accretion, accretion disks | X-rays: individual (M81 X-6) | PHOTON IMAGING CAMERA | PULSAR | STATE | BLACK-HOLE | MODEL | DISCOVERY | accretion | ASTRONOMY & ASTROPHYSICS | CHANDRA | TRANSITIONS | EMISSION | accretion disks
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 01/2020, Volume 491, Issue 2, pp. 1934 - 1940
ABSTRACT We present a detailed study of flux and index distributions of three blazars [one flat-spectrum radio quasar (FSRQ) and two BL Lacertae objects... 
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 09/2016, Volume 461, Issue 3, pp. 2580 - 2588
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 10/2016, Volume 461, Issue 4, pp. 4146 - 4150
In earlier works, it was shown that the energy-dependent soft time lags observed in kHz quasi-periodic oscillations of neutron star low-mass X-ray binaries can... 
Radiation mechanisms | Thermal-stars | Binaries | Neutron-X-rays | DISK BOUNDARY-LAYERS | STATES | LAGS | radiation mechanisms: thermal | X-rays: binaries | stars: neutron | MODELS | ASTRONOMY & ASTROPHYSICS | FREQUENCY | X-RAY | QUASI-PERIODIC OSCILLATIONS | SPECTRA | SCATTERING | Physics - High Energy Astrophysical Phenomena
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 04/2017, Volume 466, Issue 2, p. 1777
  We study the multiwavelength variability of the bare Seyfert 1 galaxy Fairall 9 using Swift monitoring observations consisting of 165 usable pointings... 
Ultraviolet radiation | Correlation analysis | Stars & galaxies | Optics | Mapping | Accretion disks
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 04/2017, Volume 466, Issue 2, pp. 1777 - 1777
We study the multiwavelength variability of the bare Seyfert 1 galaxy Fairall 9 using Swift monitoring observations consisting of 165 usable pointings spanning... 
Seyfert galaxies | X rays | Galaxies | Mathematical models | Ultraviolet | Accretion disks | Reprocessing | Standards
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 09/2014, Volume 445, Issue 3, pp. 2818 - 2824
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 02/2020, Volume 492, Issue 2, pp. 3041 - 3046
ABSTRACT The hard X-ray spectral index of some active galactic nuclei (AGN) has been observed to steepen with the source flux. This has been interpreted in a... 
Journal Article
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, ISSN 0035-8711, 09/2019, Volume 488, Issue 1, pp. 720 - 727
We report the results of the analysis of an AstroSat observation of the black hole candidate MAXI J1535-571 during its hard-intermediate state. We studied the... 
BLACK-HOLE CANDIDATES | STATES | X-rays: binaries | PRECESSION | accretion, accretion discs | VARIABILITY | black hole physics | X-RAY BINARIES | ASTRONOMY & ASTROPHYSICS | MASS | ACCRETION | INDEX | QUASI-PERIODIC OSCILLATIONS | Physics - High Energy Astrophysical Phenomena
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 01/2017, Volume 464, Issue 2, p. 2346
  We present a multiwavelength temporal analysis of the blazar 3C 454.3 during the high γ-ray active period from May to December, 2014. Except for X-rays, the... 
Correlation analysis | Space telescopes | X ray astronomy | Star & galaxy formation
Journal Article
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 01/2017, Volume 464, Issue 2, pp. 2346 - 2346
We present a multiwavelength temporal analysis of the blazar 3C 454.3 during the high gamma -ray active period from May to December, 2014. Except for X-rays,... 
X-rays | X-ray sources | Telescopes | Apertures | Infrared radiation | Blazars | Light curve | Delay
Journal Article
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, ISSN 0035-8711, 04/2019, Volume 484, Issue 3, pp. 3168 - 3179
We present a detailed temporal and spectral study of the blazar 3C 279 using multiwavelength observations from Swift-XRT, Swift-UVOT, and Fermi-LAT during a... 
radiation mechanisms: non-thermal | ENERGY GAMMA-RADIATION | QUASAR | galaxies: jets | TELESCOPE | X-rays: galaxies | VARIABILITY PROPERTIES | SWIFT | quasars: individual: FSRQ 3C 279 | RAY LIGHT CURVES | gamma-rays: galaxies | MODELS | galaxies: active | BLAZARS | ASTRONOMY & ASTROPHYSICS | X-RAY | EMISSION | Physics - High Energy Astrophysical Phenomena
Journal Article
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