Resonance line in rotating accretion disc
Sign Up to like & getrecommendations! Published in 2019 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-019-3605-1
Abstract: We study the resonance line emission from the rotating plane optically thick accretion disc, consisting of free electrons and resonant atoms. We use the standard assumption that the source of continuum radiation is located near… read more here.
Keywords: resonance; accretion disc; resonance line; line ... See more keywords
Apparent quasar disc sizes in the "bird's nest" paradigm
Sign Up to like & getrecommendations! Published in 2017 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201628842
Abstract: Context. Quasar microlensing effects make it possible to measure the accretion disc sizes around distant supermassive black holes that are still well beyond the spatial resolution of contemporary instrumentation. The sizes measured with this technique… read more here.
Keywords: accretion disc; disc sizes; disc; apparent quasar ... See more keywords
Quasars as standard candles. I. The physical relation between disc and coronal emission
Sign Up to like & getrecommendations! Published in 2017 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201630079
Abstract: Context. A tight non-linear relation exists between the X-ray and UV emission in quasars (i.e. LX ∝LUVγ), with a dispersion of ~0.2 dex over approximately three orders of magnitude in luminosity. Such observational evidence has… read more here.
Keywords: accretion disc; relation; standard candles; emission ... See more keywords
The lively accretion disc in NGC 2992 – I. Transient iron K emission lines in the high-flux state
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1683
Abstract: We thank the anonymous referee for her/his suggestions which improved the manuscript. AM thanks A. De Rosa and M. Dovˇciak for useful discussions. AM and RM acknowledge the support of the International Space Science Institute… read more here.
Keywords: lively accretion; 2992 transient; disc ngc; ngc 2992 ... See more keywords
Spectral energy distribution profiles from AGN accretion disc in multi-gap setup
Sign Up to like & getrecommendations! Published in 2023 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1127
Abstract: Spectral Energy Distribution (SED) of the broad-band continuum emission from black-hole accretion discs can serve as a tool to measure parameters of the central body and constrain the geometry of the inner accretion flow. We… read more here.
Keywords: accretion; energy distribution; agn accretion; spectral energy ... See more keywords
Properties of an accretion disc with a power-law stress-pressure relationship
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/sty2656
Abstract: Recent numerical simulations of magnetized accretion discs show that the radial-azimuthal component of the stress tensor due to the magnetorotational instability (MRI) is well represented by a power-law function of the gas pressure rather than… read more here.
Keywords: accretion disc; stress; power law; pressure ... See more keywords
Analysis of spiral structure in the accretion disc of the nova-like cataclysmic variable EC21178–5417
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz2839
Abstract: We present an extensive Doppler tomography study of the eclipsing nova-like EC21178–5417, which exhibits the classic accretion disc signature in the form of double-peak emission lines in its spectrum. Doppler tomograms confirm the presence of… read more here.
Keywords: accretion disc; spiral structure; nova like; ec21178 5417 ... See more keywords
Radio emission from Sgr A*: pulsar transits through the accretion disc
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnrasl/slx017
Abstract: Radiatively inefficient accretion flow models have been shown to accurately account for the spectrum and luminosity observed from Sgr A* in the X-ray regime down to mm wavelengths. However, observations at a few GHz cannot… read more here.
Keywords: pulsar transits; pulsar; radio; accretion ... See more keywords
FRB as products of accretion disc funnels
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DOI: 10.1093/mnrasl/slx113
Abstract: The repeating FRB 121102, the only FRB with an accurately determined position, is associated with a variable persistent radio source consistent with a low luminosity active galactic nucleus. I suggest that FRB originate in the… read more here.
Keywords: disc funnels; accretion; frb products; accretion disc ... See more keywords
Towards an informed quest for accretion disc winds in quasars: the intriguing case of Ton 28
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society: Letters"
DOI: 10.1093/mnrasl/sly204
Abstract: We report on the detection of a blueshifted Fe K absorption feature in two consecutive XMM–Newton observations of the luminous blue quasar Ton 28, at the 4σ cumulative significance. The rest energy of 9.2 keV implies the presence… read more here.
Keywords: disc winds; towards informed; ton; accretion ... See more keywords