Lower Limit on Pulsar Birthrate Set by Cosmic Ray Positron Measurements

Details Lower Limit on Pulsar Birthrate Set by Cosmic Ray Positron Measurements Lower Limit on Pulsar Birthrate Set by Cosmic Ray Positron Measurements

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ap%26ss.241..295g&link_type=abstract

Astrophysics and Space Science, Volume 241, Issue 2, pp.295-303

Astronomy and Astrophysics

Astrophysics

4

Scientific paper

A recent measurement of thee +/(e ++e -) ratio in cosmic rays between 5 and 50 GeV (HEAT experiment), is consistent with positron production theories via primary cosmic radiation interactions in the interstellar medium. This paper will show that atmospheric corrections result in a 50% level of uncertainty in thee +/(e ++e -) ratio measurements carried out with balloon-borne experiments. In light of the current theories on electron-positron production in neutron stars and by using different calculations for atmospheric corrections, a lower limit on Milky Way pulsar birthrate of 30 60 years can be set on the basis of recent observations of the positron fraction in cosmic rays.

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