|
A search for enhanced very high energy gamma-ray emission from the 2013 march crab nebula flare |
Aliu, E.; Archambault, S.; Aune, T.; Benbow, W.; Berger, K.; Bird, R.; Bouvier, A.; Buckley, J. H.; Bugaev, V.; Byrum, K.; Cerruti, M.; Chen, X.; Ciupik, L.; Connolly, M. P.; Cui, W.; Dumm, J.; Errando, M.; Falcone, A.; Federici, S.; Feng, Q.
|
|
|
|
In 2013 March, a flaring episode from the Crab Nebula lasting similar to 2 weeks was detected by Fermi-LAT (Large Area Telescope on board the Fermi Gamma-ray Space Telescope). The Very Energetic Radiation Imaging Telescope Array System (VERITAS) provides simultaneous observations throughout this period. During the flare, Fermi-LAT detected a 20 fold increase in flux above the average synchrotron flux >100 MeV seen from the Crab Nebula. Simultaneous measurements with VERITAS are consistent with the non-variable long-term average Crab Nebula flux at TeV energies. Assuming a linear correlation between the very high energy flux change >1 TeV and the flux change seen in the Fermi-LAT band >100 MeV during the period of simultaneous observations, the linear correlation factor can be constrained to be at most 8.6 x 10(-3) with 95% confidence.
|
|
Keyword(s):
|
gamma rays general; ism individual objects (crab nebula); large-area telescope; variability; april |
Publication Date:
|
2018 |
|
Type:
|
Journal article |
|
Peer-Reviewed:
|
Unknown |
|
Institution:
|
NUI Galway |
|
Publisher(s):
|
IOP Publishing |
|
First Indexed:
2019-03-23 06:50:22 Last Updated:
2019-03-23 06:50:22 |
