Results 31 to 40 of about 1,814 (268)
Thermal equilibria of accretion disks
The Astrophysical Journal, 1995 Submitted to ApJL July 1994.
Abramowicz, Marek A. +4 more
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The Spatial Structure of an Accretion Disk [PDF]
The Astrophysical Journal, 2008 Based on the microlensing variability of the two-image gravitational lens HE1104-1805 observed between 0.4 and 8 microns, we have measured the size and wavelength-dependent structure of the quasar accretion disk. Modeled as a power law in temperature, T proportional to R^-beta, we measure a B-band (0.13 microns in the rest frame) half-light radius of ...
Poindexter, Shawn +2 more
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Laboratory modeling of MHD accretion disks
Comptes Rendus. PhysiqueThis review article summarizes two decades of laboratory research aimed at understanding the dynamics of accretion disks, with particular emphasis on magnetohydrodynamic experiments involving liquid metals and plasmas.
Gissinger, Christophe
doaj +1 more source
Continuum Reverberation Mapping of AGN Accretion Disks
Frontiers in Astronomy and Space Sciences, 2017 We show recent detections of inter-band continuum lags in three AGN (NGC 5548, NGC 2617, and MCG+08-11-011), which provide new constraints on the temperature profiles and absolute sizes of the accretion disks.
Michael M. Fausnaugh +8 more
doaj +1 more source
RINGED ACCRETION DISKS: INSTABILITIES [PDF]
The Astrophysical Journal Supplement Series, 2016 ABSTRACT We analyze the possibility that several instability points may be formed, due to the Paczyński mechanism of violation of mechanical equilibrium, in the orbiting matter around a supermassive Kerr black hole. We consider a recently proposed model of a ringed accretion disk, made up by several tori (rings) that can be corotating or
Pugliese, D., Stuchlík, Z.
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Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation
FEBS Letters, EarlyView.Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz +11 more
wiley +1 more source
FEBS Letters, EarlyView.Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil +4 more
wiley +1 more source
LAMOST Reveals Long-lived Protoplanetary Disks
The Astronomical JournalWhile both observations and theories demonstrate that protoplanetary disks are not expected to live much longer than ∼10 Myr, several examples of prolonged disks have been observed in the past.
Xiao-Long Wang +4 more
doaj +1 more source
Observational properties of rigidly rotating dust configurations
European Physical Journal C: Particles and Fields, 2017 We study the observational properties of a class of exact solutions of Einstein’s field equations describing stationary, axially symmetric, rigidly rotating dust (i.e. non-interacting particles).
Batyr Ilyas +3 more
doaj +1 more source
Compact Objects and Accretion Disks [PDF]
, 2001 Recent developments in the spectropolarimetric study of compact objects, specifically black holes (stellar and massive) and neutron stars are reviewed. The lectures are organized around five topics: disks, jets, outflows, neutron stars and black holes.
Blandford, Roger +5 more
openaire +3 more sources