On the production of Al-26 by Wolf-Rayet stars - Galactic yield and gamma-ray line emissivity

Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

57

Aluminum 26, Gamma Ray Spectra, Interstellar Matter, Line Spectra, Stellar Mass Ejection, Wolf-Rayet Stars, Milky Way Galaxy, Nuclear Fusion

Scientific paper

The contribution of Wolf-Rayet stars to the 1.8 MeV gamma-ray line emissivity of the Galactic plane is estimated on the basis of a recent stellar evolution model developed in the framework of the Brussels-Saclay collaboration. The Al-26 production and destruction mechanisms in W-R stars are reviewed, and the ejection of Al-26 into the ISM is discussed. The amount of Al-26 ejected by the stellar winds are computed along with the associated gamma ray line luminosities, and the influence of the reaction rate uncertainties and of the input stellar physics on the above quantities is addressed. Various possibilities for the Galactic W-R distribution are discussed, and the total quantity of Al-26 ejected in the ISM in the past million years is estimated. The corresponding longitudinal gamma ray flux distribution in the Galactic plane is presented and discussed. It is concluded that the W-R stars are important Al-26 sources.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

On the production of Al-26 by Wolf-Rayet stars - Galactic yield and gamma-ray line emissivity 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 On the production of Al-26 by Wolf-Rayet stars - Galactic yield and gamma-ray line emissivity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the production of Al-26 by Wolf-Rayet stars - Galactic yield and gamma-ray line emissivity will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-891804

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.