Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...347..688h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 347, Dec. 15, 1989, p. 688-691.
Astronomy and Astrophysics
Astronomy
Annihilation Reactions, Antimatter, Gamma Ray Astronomy, Infrared Astronomy Satellite, Interacting Galaxies, Far Infrared Radiation, Infrared Sources (Astronomy), Positron Annihilation
Scientific paper
Recent observations show collisions or mergers among galaxies to be far more frequent than formerly anticipated. IRAS data have shown the most luminous FIR sources to involve such mergers. The luminosity of some of those mergers could be fueled by annihilation of matter and antimatter, and it is possible that this mechanism provides a way in which the existence of antigalaxies in the universe could become evident. If galaxy-antigalaxy collisions were prevalent among IRAS mergers, the 100-MeV gamma-ray flux from the most luminous merging galaxies would be roughly twice as high as the observed IR flux. Current data on a few of the brightest sources disqualify these as colliding galaxy-antigalaxy pairs. A systematic absence of gamma radiation from all ultraluminous IRAS sources would imply that antigalaxies must be rare or else located at extreme redshifts. In any case, galaxy-antigalaxy collisions cannot constitute a substantial fraction of all IRAS mergers, because their combined gamma flux would exceed the observed gamma-ray background.
No associations
LandOfFree
What is the evidence on antigalaxies? 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 What is the evidence on antigalaxies?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and What is the evidence on antigalaxies? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1566991