2021MNRAS.504.5475K

Query : 2021MNRAS.504.5475K

2021MNRAS.504.5475K - Mon. Not. R. Astron. Soc., 504, 5475-5484 (2021/July-2)

A constraint on light primordial black holes from the interstellar medium temperature.

KIM H.

Abstract (from CDS):

Primordial black holes are a viable dark matter candidate. They decay via Hawking evaporation. Energetic particles from the Hawking radiation interact with interstellar gas, depositing their energy as heat and ionization. For a sufficiently high Hawking temperature, fast electrons produced by black holes deposit a substantial fraction of energy as heat through the Coulomb interaction. Using the dwarf galaxy Leo T, we place an upper bound on the fraction of primordial black hole dark matter. For M < 5 ×10–17 M☉, our bound is competitive with or stronger than other bounds.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): ISM: general - galaxies: dwarf - galaxies: ISM - dark matter

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0

Query : 2021MNRAS.504.5475K

Basic data :
NAME Leo T -- Galaxy
Other object types: otypes_help 		G (2014AJ,AGC,...)
ICRS coord. (ep=J2000) : 		09 34 53.4 +17 03 05 [ ] D 2007ApJ...656L..13I
FK4 coord. (ep=B1950 eq=1950) : 		09 32 07.3 +17 16 29 [ ]
Gal coord. (ep=J2000) : 		214.8524 +43.6609 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 38.1 [2.0] / z(spectroscopic) 0.000127 [0.000007] / cz 38.10 [2.00]
   C 2012AJ....144....4M
Morphological type: 		dI/dGsp... D 2012MNRAS.426.1808T
Fluxes (1) :
V 15.1 [0.5] D 2012AJ....144....4M
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 3
: 31 		: 102 Display criteria :

Identifiers (5) :
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NAME Leo T LEDA 4713564 NAME Leo T dSph
AGC 198305 NAME Leo T Dwarf

References (434 between 1850 and 2026) (Total 434)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Velocities : 2    Distance : 5   

   

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Data at NED - NASA/IPAC Extragalactic Database : NAME Leo T

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