Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2010-06-12
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
13 pages, 3 figures, accepted for publication in ApJ Letters; v2: corrected SED and discussion in Section 4 accordingly
Scientific paper
10.1088/2041-8205/718/2/L161
Non-thermal hard X-ray and high-energy (HE; 1 MeV < E < 100 GeV) gamma-ray emission in the direction of Eta Carina has been recently detected using the INTEGRAL, AGILE and Fermi satellites. So far this emission has been interpreted in the framework of particle acceleration in the colliding wind region between the two massive stars. However, the existence of a very fast moving blast wave which originates in the historical 1843 "Great Eruption" provides an alternative particle acceleration site in this system. Here we explore an alternate scenario and find that inverse Compton emission from electrons accelerated in the blast wave can naturally explain both the flux and spectral shape of the measured hard X-ray and HE gamma-ray emission. This scenario is further supported by the lack of significant variability in the INTEGRAL and Fermi measured fluxes.
Domainko Wilfried
Hinton Jim A.
Ohm Stefan
No associations
LandOfFree
Particle acceleration in the expanding blast wave of Eta Carina's Great Eruption of 1843 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 Particle acceleration in the expanding blast wave of Eta Carina's Great Eruption of 1843, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Particle acceleration in the expanding blast wave of Eta Carina's Great Eruption of 1843 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-645016