Search Results - "Jithesh, V"
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Spectral and temporal studies of Swift J1658.2–4242 using AstroSat observations with the JeTCAF model
Published in Monthly notices of the Royal Astronomical Society (21-04-2023)“…ABSTRACT We present the X-ray spectral and temporal analysis of the black hole X-ray transient Swift J1658.2–4242 observed by AstroSat. Three epochs of data…”
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Exploring the Spectral Variability of the Ultraluminous X-Ray Source M81 X-6 with Suzaku and XMM-Newton
Published in The Astrophysical journal (01-12-2018)“…We present X-ray spectral variability studies of the ultraluminous X-ray source (ULX) M81 X-6 using Suzaku and XMM-Newton observations performed during…”
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3
Broad-band spectral and timing properties of MAXI J1348–630 using AstroSat and NICER observations
Published in Monthly notices of the Royal Astronomical Society (01-07-2021)“…ABSTRACT We present broad-band X-ray spectral-timing analysis of the new Galactic X-ray transient MAXI J1348–630 using five simultaneous AstroSat and NICER…”
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Fermi Observation of the Jets of the Microquasar SS 433
Published in The Astrophysical journal (10-02-2019)“…We report our analysis of the data obtained with the Large Area Telescope onboard the Fermi Gamma-ray Space Telescope (Fermi) for the SS 433/W50 region. The…”
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Study on temporal and spectral behaviour of 3C 279 during 2018 January flare
Published in Monthly notices of the Royal Astronomical Society (11-04-2019)“…ABSTRACT We present a detailed temporal and spectral study of the blazar 3C 279 using multiwavelength observations from Swift-XRT, Swift-UVOT, and Fermi-LAT…”
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Tailored carbon nanotubes for tissue engineering applications
Published in Biotechnology Progress (01-05-2009)“…A decade of aggressive researches on carbon nanotubes (CNTs) has paved way for extending these unique nanomaterials into a wide range of applications. In the…”
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Book Review Journal Article -
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Long-term Spectral Variability of the Ultraluminous X-Ray Source Holmberg IX X-1
Published in The Astrophysical journal (10-11-2017)“…We investigate the long-term spectral variability in the ultraluminous X-ray source Holmberg IX X-1. By analyzing the data from 8 Suzaku and 13 XMM-Newton…”
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A Search for X-Ray/UV Correlation in the Reflection-dominated Seyfert 1 Galaxy Markarian 1044
Published in The Astrophysical journal (01-11-2023)“…Abstract Correlated variability between coronal X-rays and disk optical/UV photons provides a very useful diagnostic of the interplay between the different…”
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Flares during eclipses of high-mass X-ray binary systems Vela X-1, 4U 1700−37, and LMC X-4
Published in Monthly notices of the Royal Astronomical Society (23-03-2024)“…ABSTRACT In eclipsing X-ray binary systems, the direct X-ray emission is blocked by the companion star during the eclipse. We observe only reprocessed emission…”
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NuSTAR observation of Ark 564 reveals the variation of coronal temperature with flux
Published in Monthly notices of the Royal Astronomical Society (01-02-2020)“…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…”
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Unveiling the broad-band spectral and temporal properties of PKS 0903-57 during its brightest flare
Published in Monthly notices of the Royal Astronomical Society (17-04-2021)“…ABSTRACT We carried a detailed spectral and temporal study of blazar PKS 0903-57 using the Fermi-LAT and Swift-XRT/UVOT observations, during its brightest…”
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TRANSIENT X-RAY SOURCE POPULATION IN THE MAGELLANIC-TYPE GALAXY NGC 55
Published in The Astrophysical journal (10-04-2016)“…ABSTRACT We present the spectral and temporal properties of 15 candidate transient X-ray sources detected in archival XMM-Newton and Chandra observations of…”
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Broadband X-ray spectral study of ultraluminous X-ray source M81 X–6
Published in Monthly notices of the Royal Astronomical Society (21-05-2020)“…ABSTRACT Ultraluminous X-ray sources (ULXs) are a class of extragalactic, point-like, off-nuclear X-ray sources with X-ray luminosity from ∼1039 to 1041 erg…”
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14
Transient X-Ray Sources in the Magellanic-type Galaxy NGC 4449
Published in The Astrophysical journal (10-02-2017)“…We report the identification of seven transient X-ray sources in the nearby Magellanic-type galaxy NGC 4449 using archival multi-epoch X-ray observations…”
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Correlated variability of the reflection fraction with the X-ray flux and spectral index for Mrk 478
Published in Monthly notices of the Royal Astronomical Society (07-10-2022)“…ABSTRACT The X-ray spectrum of Mrk 478 is known to be dominated by a strong soft excess that can be described using relativistic blurred reflection. Using…”
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Spectral and Timing Properties of the Galactic X-Ray Transient Swift J1658.2-4242 Using Astrosat Observations
Published in The Astrophysical journal (10-12-2019)“…We present the X-ray timing and spectral analysis of the new Galactic X-ray transient Swift J1658.2-4242 observed with the Large Area X-ray Proportional…”
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Time resolved spectroscopy of a GRS 1915 + 105 flare during its unusual low state using AstroSat
Published in Monthly notices of the Royal Astronomical Society (15-02-2024)“…ABSTRACT Since its discovery in 1992, GRS 1915 + 105 has been among the brightest sources in the X-ray sky. However, in early 2018, it dimmed significantly and…”
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Chandra X-ray analysis of Herbig Ae/Be stars
Published in Monthly notices of the Royal Astronomical Society (25-04-2024)“…ABSTRACT Herbig Ae/Be (HAeBe) stars are intermediate-mass pre-main-sequence stars, characterized by infrared (IR) excess and emission lines. They are observed…”
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Evidence for Coronal Temperature Variation in Seyfert 2 ESO 103–035 Using NuSTAR Observations
Published in The Astrophysical journal (01-11-2021)“…Abstract We report flux-resolved spectroscopic analysis of the active galactic nucleus (AGN) ESO 103–035 using NuSTAR observations. Following an earlier work,…”
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Study of X-Ray Intraday Variability of HBL Blazars Based on Observations Obtained with XMM-Newton
Published in The Astrophysical journal (01-11-2022)“…Abstract We present an extensive study on the X-ray intraday variability of 10 teraelectronvolt-emitting high synchrotron peaked blazars (HBLs): 1ES 0229+200,…”
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