A Mystery of the Galactic Bulge: SPI Observations of Positron Annihilation

Details A Mystery of the Galactic Bulge: SPI Observations of Positron Annihilation A Mystery of the Galactic Bulge: SPI Observations of Positron Annihilation

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sf2a.conf..471w&link_type=abstract

SF2A-2005: Semaine de l'Astrophysique Francaise, meeting held in Strasbourg, France, June 27 - July 1, 2005, Edited by F. Casoli

Physics

2

Scientific paper

The imaging spectrometer SPI on board ESA's INTEGRAL observatory provides us with an unprecedented view of positrons in our Galaxy. The first sky maps in the 511 keV annihilation line and in the positronium continuum emission show a puzzling concentration of annihilation radiation in the Galactic bulge. The annihilation of positrons appears to be even more concentrated in the bulge than old stellar populations such as Type Ia supernovae, novae, or low-mass X-ray binaries. New, speculative, physics such as positron production from light dark matter has begun to be discussed as a possible solution. High-resolution spectroscopy of the bulge emission is providing additional clues. SPI has allowed us to solve a few of the positron annihilation puzzles of the past, but has deepened the mystery of the Galactic bulge.

Affiliated with

Also associated with

No associations

Rating

A Mystery of the Galactic Bulge: SPI Observations of Positron Annihilation 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 A Mystery of the Galactic Bulge: SPI Observations of Positron Annihilation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Mystery of the Galactic Bulge: SPI Observations of Positron Annihilation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1460732