2004A&A...418..649G


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.10CEST21:25:13

2004A&A...418..649G - Astronomy and Astrophysics, volume 418, 649-653 (2004/5-1)

Pulsar birthrate set by cosmic-ray positron observations.

GRIMANI C.

Abstract (from CDS):

The pulsar birthrate (PB) in our galaxy is a parameter known with a large uncertainty. Different estimates indicate that 1/PB ranges between 30 and 250 years. Assuming a polar-cap model for gamma-ray production in gamma-ray pulsars, positron fraction measurements in cosmic rays above a few GeV make it possible to set a limit on PB. Recent measurements of the e+/(e++e) ratio indicate a PB of one pulsar born every 200±100 years when the uncertainty on the secondary positron calculations is taken into account. A PB compatible with this result is found even in the case of a relevant production of positrons in the pulsar outer gaps.

Abstract Copyright:

Journal keyword(s): stars: pulsar: general - ISM: cosmic-rays

Status at CDS:  

CDS comments: PSR B1952-32 is a misprint for PSR B1952+32.

Simbad objects: 9

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Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* CM Tau Psr 05 34 31.93830 +22 00 52.1758           ~ 4763 1
2 M 1 SNR 05 34 31.94 +22 00 52.2           ~ 5549 4
3 NAME Geminga Psr 06 33 54.153 +17 46 12.91           ~ 1082 0
4 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545           ~ 2039 1
5 PSR B1046-58 Psr 10 48 12.391 -58 32 02.68           ~ 226 0
6 PSR B1055-52 Psr 10 57 58.970 -52 26 56.52           ~ 676 0
7 PSR B1509-58 Psr 15 13 55.52 -59 08 08.8           ~ 789 1
8 PSR B1706-44 Psr 17 09 42.62 -44 29 05.8           ~ 568 1
9 PSR B1951+32 Psr 19 52 58.181 +32 52 40.98           ~ 549 2

    Equat.    Gal    SGal    Ecl

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2020.04.10-21:25:13

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