Refine
Has Fulltext
- no (7)
Year of publication
- 2014 (7) (remove)
Document Type
- Article (7) (remove)
Language
- English (7)
Is part of the Bibliography
- yes (7)
Keywords
- gamma rays: galaxies (3)
- BL Lacertae objects: general (2)
- diffuse radiation (2)
- gamma rays: general (2)
- BL Lacertae objects: individual (1ES 0229+200, VER J0232+202) (1)
- BL Lacertae objects: individual (1ES 1959+650) (1)
- BL Lacertae objects: individual (1ES1218+30.4) (1)
- Galaxy: center (1)
- ISM: individual objects (Crab Nebula) (1)
- astroparticle physics (1)
- black hole physics (1)
- cosmic background radiation (1)
- galaxies: active (1)
- galaxies: jets (1)
- gamma rays : stars (1)
- gamma-ray burst: individual (GRB 130427A) (1)
- magnetic fields (1)
- methods: data analysis (1)
- pulsars : individual (PSR J2021+3651) (1)
- radiation mechanisms: non-thermal (1)
- supernovae : individual (CTB 87) (1)
Institute
A search for enhanced very high energy GAMMA-RAY emission from the 2013 march crab nebula flare
(2014)
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.