Average Inhomogeneities in Milky Way SNII and The PAMELA Anomaly

Details Average Inhomogeneities in Milky Way SNII and The PAMELA Anomaly Average Inhomogeneities in Milky Way SNII and The PAMELA Anomaly

2011-07-08

arxiv.org/abs/1107.1696v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

8 pages, 2 figures, 2 table; accepted by Astroparticle Physics

Scientific paper

A model is presented to estimate the fraction of Supernova Type-II events (SNII) occurring inside vs. outside a spiral arm for a given star formation episode. The probability distribution function (PDF) for this fraction is given for use in models similar to those of Shaviv et al. [13][11]. The calculated PDF for the SNII fraction, SNII_{in/total}, defined as the number of SNII inside a spiral arm divided by the total number of SNII from a star formation event, provides a constraint on the magnitude of supernova remnant (SNR) concentrations used in cosmic ray propagation models attempting to explain the PAMELA anomaly. Despite the concentration of star formation within spiral arms, this model predicts the majority of SNII events actually occur in inter-arm regions and calls into question the SNR concentration assumption of Shaviv et al.

Affiliated with

Also associated with

No associations

Rating

Average Inhomogeneities in Milky Way SNII and The PAMELA Anomaly 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 Average Inhomogeneities in Milky Way SNII and The PAMELA Anomaly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Average Inhomogeneities in Milky Way SNII and The PAMELA Anomaly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-222687