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Direct detection of black holes via electromagnetic radiation

Title
Direct detection of black holes via electromagnetic radiation
Type
Article in International Scientific Journal
Year
2014
Authors
Sobrinho, JLG
(Author)
Other
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Augusto, P
(Author)
FMUP
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Journal
Vol. 441
Pages: 2878-2884
ISSN: 0035-8711
Other information
Authenticus ID: P-009-M0B
Abstract (EN): Many black hole (BH) candidates exist, ranging from supermassive (similar to 10(6)-10(10) M-aS (TM)) to stellar masses (similar to 1-100 M-aS (TM)), all of them identified by indirect processes. Although there are no known candidate BHs with substellar masses, these might have been produced in the primordial Universe. BHs emit radiation composed of photons, gravitons and, later in their lives, massive particles. We explored the detection of such BHs with present-day masses from 10(-22) to 10(-11) M-aS (TM). We determined the maximum distances (d) at which the current best detectors should be placed in order to identify such isolated BHs. Broadly, we conclude that in the visible and ultraviolet BHs can be directly detected at d a parts per thousand(2) 10(7) m while in the X-ray band the distances might reach similar to 10(8) m (of the order of the Earth-Moon distance) and in the gamma-ray band BHs might even be detected from as far as similar to 0.1 pc. Since these results give us realistic hopes of directly detecting BHs, we suggest the scrutiny of current and future space mission data to reach this goal.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 7
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