White Dwarf Model for PAMELA Positron Excess

Details White Dwarf Model for PAMELA Positron Excess White Dwarf Model for PAMELA Positron Excess

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1279..352k&link_type=abstract

DECIPHERING THE ANCIENT UNIVERSE WITH GAMMA-RAY BURSTS. AIP Conference Proceedings, Volume 1279, pp. 352-354 (2010).

Computer Science

White Dwarfs, Pulsars, Cosmic Background Radiation, Neutron Stars, Faint Blue Stars, White Dwarfs, Degenerate Stars, Nuclei Of Planetary Nebulae, Pulsars, Cosmic Rays, Neutron Stars

Scientific paper

We suggest that white dwarf pulsars can compete with neutron star pulsars for producing the excesses of cosmic ray positrons and electrons (e+/-) observed by the PAMELA, ATIC/PPB-BETS, Fermi and HESS experiments. A double degenerate white dwarf binary mergers into a white dwarf pulsar with rotational energy (~1050 erg) comparable to a neutron star pulsar. The birth rate (~1/100 yr) is also similar, providing the right energy budget. Applying the neutron star theory, we show that the white dwarf pulsars can produce e+/-, up to ~10 TeV for high magnetic fields (>108 G). In contrast to the neutron star case, the adiabatic energy losses of e+/- are negligible since their injection continues after the nebula expansion. The long activity also enhances the nearby sources, potentially dominating the quickly cooled e+/- above TeV energy, detectable by the future CALET experiment.

Affiliated with

Also associated with

No associations

Rating

White Dwarf Model for PAMELA Positron Excess does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with White Dwarf Model for PAMELA Positron Excess, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and White Dwarf Model for PAMELA Positron Excess will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1403278