2012ApJ...760..136A

Query : 2012ApJ...760..136A

2012ApJ...760..136A - Astrophys. J., 760, 136 (2012/December-1)

Search for a correlation between very-high-energy gamma rays and giant radio pulses in the Crab pulsar.

ALIU E., ARCHAMBAULT S., ARLEN T., AUNE T., BEILICKE M., BENBOW W., BOUVIER A., BUCKLEY J.H., BUGAEV V., BYRUM K., CESARINI A., CIUPIK L., COLLINS-HUGHES E., CONNOLLY M.P., CUI W., DICKHERBER R., DUKE C., DUMM J., FALCONE A., FEDERICI S., FENG Q., FINLEY J.P., FINNEGAN G., FORTSON L., FURNISS A., GALANTE N., GALL D., GILLANDERS G.H., GODAMBE S., GRIFFIN S., GRUBE J., GYUK G., HANNA D., HOLDER J., HUAN H., HUGHES G., HUMENSKY T.B., KAARET P., KARLSSON N., KHASSEN Y., KIEDA D., KRAWCZYNSKI H., KRENNRICH F., LANG M.J., LEBOHEC S., LEE K., LYUTIKOV M., MADHAVAN A.S., MAIER G., MAJUMDAR P., McARTHUR S., McCANN A., MORIARTY P., MUKHERJEE R., NELSON T., O'FAOLAIN DE BHROITHE A., ONG R.A., ORR M., OTTE A.N., PARK N., PERKINS J.S., POHL M., PROKOPH H., QUINN J., RAGAN K., REYES L.C., REYNOLDS P.T., ROACHE E., SAXON D.B., SCHROEDTER M., SEMBROSKI G.H., SENTURK G.D., SMITH A.W., STASZAK D., TELEZHINSKY I., TESIC G., THEILING M., THIBADEAU S., TSURUSAKI K., VARLOTTA A., VINCENT S., VIVIER M., WAGNER R.G., WAKELY S.P., WEEKES T.C., WEINSTEIN A., WELSING R., WILLIAMS D.A., ZITZER B. and KONDRATIEV V.

Abstract (from CDS):

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 (E_γ> 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.

Abstract Copyright: ∼

Journal keyword(s): gamma rays: stars - pulsars: individual: B0531+21

Simbad objects: 3

Full paper

View the references in ADS

Number of rows : 3

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Sp type	#ref 1850 - 2026	#notes
1	M 1	SNR	05 34 31.8	+22 01 03	~	6516	1
2	V* CM Tau	Psr	05 34 31.9474694616	+22 00 52.153698024	~	5476	0
3	PSR J0633+1746	Psr	06 33 54.153	+17 46 12.91	~	1308	0

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