A captivating overview of supercritical accretion and winds
Published on:
7 December 2018
Primary Category:
High Energy Astrophysical Phenomena
Paper Authors:
Yu Zhou,
Hua Feng,
Luis C. Ho,
Yuhan Yao
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Key Details
40 very soft X-ray sources were selected from a Chandra survey of nearby galaxies
Their blackbody luminosity ranges from 10^37 to 10^40 erg/s
The emission is interpreted as originating from the photosphere of winds driven by supercritical accretion
Both neutron stars and stellar-mass black holes are required to explain the luminosity range
The inferred mass accretion rate is 100-500 times the Eddington limit
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AI generated summary
A captivating overview of supercritical accretion and winds
This paper studies luminous, very soft X-ray sources in nearby galaxies using Chandra data. After careful sample selection, most sources are interpreted as hyper-accreting stellar-mass compact objects launching optically thick winds. The blackbody emission likely arises from the wind photosphere. The results provide key observational evidence for theoretical models of supercritical accretion and associated outflows.
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