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Browsing by Subject "quasars: supermassive black holes"

Browsing by Subject "quasars: supermassive black holes"

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  • Accretion disc sizes from continuum reverberation mapping of AGN selected from the ZTF survey 
    Jha, Vivek Kumar; Joshi, Ravi,et.al. (Monthly Notices of the Royal Astronomical Society, 2022-04)
    We present the accretion disc-size estimates for a sample of 19 active galactic nuclei (AGNs) using the optical g-, r-, and i-band light curves obtained from the Zwicky Transient Facility survey. All the AGNs have reliable ...
  • A comparative study of the physical properties for a representative sample of Narrow and Broad-line Seyfert galaxies 
    Jha, Vivek Kumar; Chand, Hum; Ojha, Vineet; Omar, Amitesh; Rastogi, Shantanu (Monthly Notices of the Royal Astronomical Society, 2022-03)
    We present a comparative study of the physical properties of a homogeneous sample of 144 Narrow line Seyfert 1 (NLSy1) and 117 Broad-line Seyfert 1 (BLSy1) galaxies. These two samples are in a similar luminosity and ...
  • Host galaxy properties of quasi-periodically erupting X-ray sources 
    Wevers, T.; Pasham, D. R.; Jalan, P.; Rakshit, S.; Arcodia, R. (Astronomy & Astrophysics, 2022-03)
    Quasi-periodic X-ray eruptions (QPEs) are a recently discovered phenomenon, the nature of which remains unclear. Based on their discovery in active galactic nuclei (AGNs), explanations related to an AGN accretion disk or ...
  • Refining the OJ 287 2022 impact flare arrival epoch 
    Valtonen, Mauri J. , et.al.; Gupta, Alok C. (Monthly Notices of the Royal Astronomical Society, 2023-06)
    The bright blazar OJ 287 routinely parades high brightness bremsstrahlung flares, which are explained as being a result of a secondary supermassive black hole (SMBH) impacting the accretion disc of a more massive primary ...

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