2021ApJ...909..107I

Query : 2021ApJ...909..107I

2021ApJ...909..107I - Astrophys. J., 909, 107-107 (2021/March-2)

Rigorous theory for secondary cosmic-ray ionization.

IVLEV A.V., SILSBEE K., PADOVANI M. and GALLI D.

Abstract (from CDS):

The energy spectrum of electrons produced in molecular gas by interstellar cosmic rays (CRs) is rigorously calculated as a function of gas column density N traversed by the CRs. This allows us to accurately compute the local value of the secondary ionization rate of molecular hydrogen, ζsec(N), as a function of the local primary ionization rate, ζp(N). The ratio ζsec/ζp increases monotonically with N, and can considerably exceed the value of ≃0.67 commonly adopted in the literature. For sufficiently soft interstellar spectra, the dependence ζsec/ζp versus N is practically insensitive to their particular shape and thus is a general characteristic of the secondary CR ionization in dense gas.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Secondary cosmic rays - Molecular clouds

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 Local Bubble ISM ~ ~           ~ 1059 0

Query : 2021ApJ...909..107I

Basic data :
NAME Local Bubble -- Interstellar Medium Object
Other object types: otypes_help 		ISM ()
ICRS coord. (ep=J2000) : 		No Coord.

Identifiers (2) :
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NAME Local Bubble NAME Local Interstellar Bubble

References (1059 between 1850 and 2026) (Total 1059)
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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