The Electron Temperature and 44Ti Decay Rate in Cassiopeia A

Details The Electron Temperature and 44Ti Decay Rate in Cassiopeia A The Electron Temperature and 44Ti Decay Rate in Cassiopeia A

2001-08-20

arxiv.org/abs/astro-ph/0108316v1

Astronomy and Astrophysics

Astrophysics

6 pages, to appear in proceedings of Joint SOHO-ACE Workshop 2001, Solar and Galactic Abundances

Scientific paper

10.1063/1.1434031

The effects of plasma elemental composition and ionization state on the effective decay rate of 44Ti are investigated. We essentially follow the methods of the first authors to treat this topic, Mochizuki et al., but use more realistic plasma models, including radiative cooling, to compute the evolution of the charge state distribution behind the reverse shock. For uniform density ejecta (i.e. no clumps or bubbles) we find a negligible change to the decay rate of 44Ti. We discuss the effects of non-uniform ejecta. We also briefly consider the effects on these calculations of collisionless electron heating associated with weak secondary shocks propagating throughout the Cas A shell as a result of foward or reverse shock encounters with density inhomogeneities, recently suggested as an explanation for the hard X-ray tail seen in BeppoSAX and RXTE/OSSE spectra.

Affiliated with

Also associated with

No associations

Rating

The Electron Temperature and 44Ti Decay Rate in Cassiopeia A 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 The Electron Temperature and 44Ti Decay Rate in Cassiopeia A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Electron Temperature and 44Ti Decay Rate in Cassiopeia A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-176142