SEARCH FOR A CORRELATION BETWEEN VERY-HIGH-ENERGY GAMMA RAYS AND GIANT RADIO PULSES IN THE CRAB PULSAR

E Aliu; S Archambault; A Cesarini; L Ciupik; E COLLINS-HUGHES; M. P Connolly; W Cui; R Dickherber; C Duke; J Dumm; A Falcone; S Federici; T Arlen; Q Feng; J. P Finley; G Finnegan; L Fortson; A Furniss; N Galante; D Gall; G. H Gillanders; S Godambe; S Griffin; T Aune; J Grube; G Gyuk; D Hanna; J Holder; H Huan; G Hughes; T. B Humensky; P Kaaret; N Karlsson; Y Khassen; M Beilicke; D Kieda; H Krawczynski; F Krennrich; M. J Lang; S Lebohec; K Lee; M Lyutikov; A. S Madhavan; G Maier; P Majumdar; W Benbow; S Mcarthur; A Mccann; P Moriarty; R Mukherjee; A O'FAOLAIN DE BHROITHE; T Nelson; R. A Ong; M Orr; A. N Otte; N Park; A Bouvier; J. H Buckley; V Bugaev; K Byrum

doi:10.1088/0004-637X/760/2/136

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SEARCH FOR A CORRELATION BETWEEN VERY-HIGH-ENERGY GAMMA RAYS AND GIANT RADIO PULSES IN THE CRAB PULSAR

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SEARCH FOR A CORRELATION BETWEEN VERY-HIGH-ENERGY GAMMA RAYS AND GIANT RADIO PULSES IN THE CRAB PULSAR

E Aliu, S Archambault, A Cesarini, L Ciupik, E COLLINS-HUGHES, M. P Connolly, W Cui, R Dickherber, C Duke, J Dumm, …

The Astrophysical journal, Vol.760(2), pp.1-13

2012

DOI: 10.1088/0004-637X/760/2/136

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Abstract

We present the results of a joint observational campaign between the Green Bank radio telescope and the VERITAS gamma-ray telescope, which searched for a correlation between the emission of very-high-energy (VHE) gamma rays (Eγ > 150 GeV) and giant radio pulses (GRPs) from the Crab pulsar at 8.9 GHz. A total of 15,366 GRPs were recorded during 11.6 hr of simultaneous observations, which were made across four nights in 2008 December and in 2009 November and December. We searched for an enhancement of the pulsed gamma-ray emission within time windows placed around the arrival time of the GRP events. In total, eight different time windows with durations ranging from 0.033 ms to 72 s were positioned at three different locations relative to the GRP to search for enhanced gamma-ray emission which lagged, led, or was concurrent with, the GRP event. Furthermore, we performed separate searches on main pulse GRPs and interpulse GRPs and on the most energetic GRPs in our data sample. No significant enhancement of pulsed VHE emission was found in any of the preformed searches. We set upper limits of 5–10 times the average VHE flux of the Crab pulsar on the flux simultaneous with interpulse GRPs on single-rotation-period timescales. On ∼8 s timescales around interpulse GRPs, we set an upper limit of 2–3 times the average VHE flux. Within the framework of recent models for pulsed VHE emission from the Crab pulsar, the expected VHE–GRP emission correlations are below the derived limits.

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Title: Subtitle: SEARCH FOR A CORRELATION BETWEEN VERY-HIGH-ENERGY GAMMA RAYS AND GIANT RADIO PULSES IN THE CRAB PULSAR
Creators: E Aliu - Columbia University
S Archambault - McGill University
A Cesarini - Ollscoil na Gaillimhe – University of Galway
L Ciupik - Adler Planetarium
E COLLINS-HUGHES - University College Dublin
M. P Connolly - Ollscoil na Gaillimhe – University of Galway
W Cui - Purdue University West Lafayette
R Dickherber - Washington University in St. Louis
C Duke - Grinnell College
J Dumm - University of Minnesota
A Falcone - Pennsylvania State University
S Federici - University of Potsdam
T Arlen - University of California, Los Angeles
Q Feng - Purdue University West Lafayette
J. P Finley - Purdue University West Lafayette
G Finnegan - University of Utah
L Fortson - University of Minnesota
A Furniss - University of California, Santa Cruz
N Galante - Harvard University
D Gall - University of Iowa
G. H Gillanders - Ollscoil na Gaillimhe – University of Galway
S Godambe - University of Utah
S Griffin - McGill University
T Aune - University of California, Santa Cruz
J Grube - Adler Planetarium
G Gyuk - Adler Planetarium
D Hanna - McGill University
J Holder - University of Delaware
H Huan - University of Chicago
G Hughes - DESY, Platanenallee 6, 15738 Zeuthen, Germany
T. B Humensky - Columbia University
P Kaaret - University of Iowa
N Karlsson - University of Minnesota
Y Khassen - University College Dublin
M Beilicke - Washington University in St. Louis
D Kieda - University of Utah
H Krawczynski - Washington University in St. Louis
F Krennrich - Iowa State University
M. J Lang - Ollscoil na Gaillimhe – University of Galway
S Lebohec - University of Utah
K Lee - Washington University in St. Louis
M Lyutikov - Purdue University West Lafayette
A. S Madhavan - Iowa State University
G Maier - DESY, Platanenallee 6, 15738 Zeuthen, Germany
P Majumdar - University of California, Los Angeles
W Benbow - Harvard University
S Mcarthur - Washington University in St. Louis
A Mccann - University of Chicago
P Moriarty - Galway-Mayo Institute of Technology
R Mukherjee - Columbia University
A O'FAOLAIN DE BHROITHE - University College Dublin
T Nelson - University of Minnesota
R. A Ong - University of California, Los Angeles
M Orr - Iowa State University
A. N Otte - Georgia Institute of Technology
N Park - University of Chicago
A Bouvier - University of California, Santa Cruz
J. H Buckley - Washington University in St. Louis
V Bugaev - Washington University in St. Louis
K Byrum - Argonne National Laboratory
Resource Type: Journal article
Publication Details: The Astrophysical journal, Vol.760(2), pp.1-13
DOI: 10.1088/0004-637X/760/2/136
ISSN: 0004-637X
eISSN: 1538-4357
Publisher: Institute of Physics (IOP)
Language: English
Date published: 2012
Academic Unit: Physics and Astronomy
Record Identifier: 9984199825302771

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