Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-11-25
Astrophys.J. 621 (2005) 1137-1145
Astronomy and Astrophysics
Astrophysics
27 pages, 11 ps figures, Accepted in Astrophysical Journal
Scientific paper
10.1086/427678
In a recent study of a search for enhancements from the galactic center with muons at sea level using the TUPI muon telescope, we have found several ground level enhancements (GLEs) as very sharp peaks above the count rate background. This paper reports a consistent analysis of two GLEs observed in December 2003 and detected after an up-grade of the data acquisition system, which includes a noise filter and which allows us to verify that the GLEs are not mere background fluctuations. The main target of this study is a search for the origin of the GLEs. The results show that one of them has a strong correlation with a solar flare, while the other has an unknown origin, because there is neither a satellite report of a solar flare, nor prompt X-ray emission, and nor a excess of nuclei during the raster scan where the GLE was observed. Even so, two possibilities are analyzed: the solar flare hypothesis and the gamma ray burst (GRB) hypothesis. We show, by using the FLUKA Monte Carlo results for photo-production, that under certain conditions there is the possibility of an enhancement of muons at sea level from GeV GRBs.
Augusto C. R. A.
Malheiro Manuel
Navia Carlos E.
Robba M. B.
Shigueoka Hisataki
No associations
LandOfFree
Is there an enhancement of muons at sea level from transient events? 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 Is there an enhancement of muons at sea level from transient events?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Is there an enhancement of muons at sea level from transient events? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-352855