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GAMMA-RAY ACTIVITY IN THE CRAB NEBULA: THE EXCEPTIONAL FLARE OF 2011 APRIL
Open accessAbstract
The Large Area Telescope on board the Fermi satellite observed a gamma-ray flare in the Crab Nebula lasting for approximately nine days in April of 2011. The source, which at optical wavelengths has a size of ≈11 lt-yr across, doubled its gamma-ray flux within eight hours. The peak photon flux was (186 ± 6) × 10 −7 cm −2 s −1 above 100 MeV, which corresponds to a 30-fold increase compared to the average value. During the flare, a new component emerged in the spectral energy distribution, which peaked at an energy of (375 ± 26) MeV at flare maximum. The observations imply that the emission region was likely relativistically beamed toward us and that variations in its motion are responsible for the observed spectral variability.
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Citations
Cites
THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION
Atwood, W. B., Abdo, A. A., Ackermann, M., Althouse, W., Anderson, B., Axelsson, M., Baldini, L., Ballet, J., Band, D. L., Barbiellini, G., et al. (2009) · The Astrophysical Journal · doi:10.1088/0004-637x/697/2/1071 · Cited by 4,198
Self-citation
Cited by
Fermi Large Area Telescope Fourth Source Catalog
Abdollahi, S., Acero, F., Ackermann, M., Ajello, M., Atwood, W. B., Axelsson, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., et al. (2020) · The Astrophysical Journal Supplement Series · doi:10.3847/1538-4365/ab6bcb · Cited by 1,427
Self-citationTHE SECOND FERMI LARGE AREA TELESCOPE CATALOG OF GAMMA-RAY PULSARS
Abdo, A. A., Ajello, M., Allafort, A., Baldini, L., Ballet, J., Barbiellini, G., Baring, M. G., Bastieri, D., Belfiore, A., Bellazzini, R., et al. (2013) · The Astrophysical Journal Supplement Series · doi:10.1088/0067-0049/208/2/17 · Cited by 832
Self-citationRELATIVISTIC RECONNECTION: AN EFFICIENT SOURCE OF NON-THERMAL PARTICLES
Sironi, L., & Spitkovsky, A. (2014) · The Astrophysical Journal · doi:10.1088/2041-8205/783/1/l21 · Cited by 666
Metadata
- Authors
- Buehler, R., Scargle, J. D., Blandford, R. D., Baldini, L., Baring, M. G., Belfiore, A., Charles, E., Chiang, J., D'Ammando, F., Dermer, C. D., Funk, S., Grove, J. E., Harding, A. K., Hays, E., Kerr, M., Massaro, F., Mazziotta, M. N., Romani, R. W., Saz Parkinson, P. M., Tennant, A. F., & Weisskopf, M. C.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2012-03-19
- Volume
- 749
- Issue
- 1
- Pages
- 26
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W1540565992
- Cited by
- 199
- References
- 1
- FWCI
- 11.57
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Buehler, R., Scargle, J. D., Blandford, R. D., Baldini, L., Baring, M. G., Belfiore, A., Charles, E., Chiang, J., D'Ammando, F., Dermer, C. D., Funk, S., Grove, J. E., Harding, A. K., Hays, E., Kerr, M., Massaro, F., Mazziotta, M. N., Romani, R. W., Saz Parkinson, P. M., . . . Weisskopf, M. C. (2012). GAMMA-RAY ACTIVITY IN THE CRAB NEBULA: THE EXCEPTIONAL FLARE OF 2011 APRIL. The Astrophysical Journal. https://doi.org/10.1088/0004-637x/749/1/26
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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