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- Publisher Website: 10.1088/0004-637X/749/1/26
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Article: Gamma-ray activity in the crab nebula: The exceptional flare of 2011 April
Title | Gamma-ray activity in the crab nebula: The exceptional flare of 2011 April |
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Authors | |
Keywords | Gamma Rays: Stars Ism: Supernova Remnants Magnetic Reconnection Magnetohydrodynamics (Mhd) Pulsars: Individual (Crab) Radiation Mechanisms: Non-Thermal |
Issue Date | 2012 |
Publisher | Institute of Physics Publishing, Inc. The Journal's web site is located at http://iopscience.iop.org/0004-637X/ |
Citation | Astrophysical Journal, 2012, v. 749 n. 1 How to Cite? |
Abstract | 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 -7cm -2s -1 above 100MeV, 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. © 2012. The American Astronomical Society. All rights reserved. |
Persistent Identifier | http://hdl.handle.net/10722/188417 |
ISSN | 2023 Impact Factor: 4.8 2023 SCImago Journal Rankings: 1.905 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Buehler, R | en_US |
dc.contributor.author | Scargle, JD | en_US |
dc.contributor.author | Blandford, RD | en_US |
dc.contributor.author | Baldini, L | en_US |
dc.contributor.author | Baring, MG | en_US |
dc.contributor.author | Belfiore, A | en_US |
dc.contributor.author | Charles, E | en_US |
dc.contributor.author | Chiang, J | en_US |
dc.contributor.author | D'ammando, F | en_US |
dc.contributor.author | Dermer, CD | en_US |
dc.contributor.author | Funk, S | en_US |
dc.contributor.author | Grove, JE | en_US |
dc.contributor.author | Harding, AK | en_US |
dc.contributor.author | Hays, E | en_US |
dc.contributor.author | Kerr, M | en_US |
dc.contributor.author | Massaro, F | en_US |
dc.contributor.author | Mazziotta, MN | en_US |
dc.contributor.author | Romani, RW | en_US |
dc.contributor.author | Saz Parkinson, PM | en_US |
dc.contributor.author | Tennant, AF | en_US |
dc.contributor.author | Weisskopf, MC | en_US |
dc.date.accessioned | 2013-09-03T04:05:41Z | - |
dc.date.available | 2013-09-03T04:05:41Z | - |
dc.date.issued | 2012 | en_US |
dc.identifier.citation | Astrophysical Journal, 2012, v. 749 n. 1 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/188417 | - |
dc.description.abstract | 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 -7cm -2s -1 above 100MeV, 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. © 2012. The American Astronomical Society. All rights reserved. | en_US |
dc.language | eng | en_US |
dc.publisher | Institute of Physics Publishing, Inc. The Journal's web site is located at http://iopscience.iop.org/0004-637X/ | en_US |
dc.relation.ispartof | Astrophysical Journal | en_US |
dc.subject | Gamma Rays: Stars | en_US |
dc.subject | Ism: Supernova Remnants | en_US |
dc.subject | Magnetic Reconnection | en_US |
dc.subject | Magnetohydrodynamics (Mhd) | en_US |
dc.subject | Pulsars: Individual (Crab) | en_US |
dc.subject | Radiation Mechanisms: Non-Thermal | en_US |
dc.title | Gamma-ray activity in the crab nebula: The exceptional flare of 2011 April | en_US |
dc.type | Article | en_US |
dc.identifier.email | Saz Parkinson, PM: pablosp@hku.hk | en_US |
dc.identifier.authority | Saz Parkinson, PM=rp01803 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1088/0004-637X/749/1/26 | en_US |
dc.identifier.scopus | eid_2-s2.0-84858964121 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-84858964121&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 749 | en_US |
dc.identifier.issue | 1 | en_US |
dc.identifier.isi | WOS:000302175500026 | - |
dc.publisher.place | United States | en_US |
dc.identifier.scopusauthorid | Buehler, R=55138489700 | en_US |
dc.identifier.scopusauthorid | Scargle, JD=6603849454 | en_US |
dc.identifier.scopusauthorid | Blandford, RD=35228413700 | en_US |
dc.identifier.scopusauthorid | Baldini, L=35748339500 | en_US |
dc.identifier.scopusauthorid | Baring, MG=7003670883 | en_US |
dc.identifier.scopusauthorid | Belfiore, A=26535417200 | en_US |
dc.identifier.scopusauthorid | Charles, E=7103332011 | en_US |
dc.identifier.scopusauthorid | Chiang, J=24586575400 | en_US |
dc.identifier.scopusauthorid | D'Ammando, F=6505606078 | en_US |
dc.identifier.scopusauthorid | Dermer, CD=7005781264 | en_US |
dc.identifier.scopusauthorid | Funk, S=8238179000 | en_US |
dc.identifier.scopusauthorid | Grove, JE=7103266596 | en_US |
dc.identifier.scopusauthorid | Harding, AK=55138522200 | en_US |
dc.identifier.scopusauthorid | Hays, E=35229539600 | en_US |
dc.identifier.scopusauthorid | Kerr, M=35229880000 | en_US |
dc.identifier.scopusauthorid | Massaro, F=16305108300 | en_US |
dc.identifier.scopusauthorid | Mazziotta, MN=55139003400 | en_US |
dc.identifier.scopusauthorid | Romani, RW=55140366700 | en_US |
dc.identifier.scopusauthorid | Saz Parkinson, PM=8948464400 | en_US |
dc.identifier.scopusauthorid | Tennant, AF=7006183262 | en_US |
dc.identifier.scopusauthorid | Weisskopf, MC=7005528199 | en_US |
dc.identifier.issnl | 0004-637X | - |