2016A&A...585A.133A

Query : 2016A&A...585A.133A

2016A&A...585A.133A - Astronomy and Astrophysics, volume 585A, 133-133 (2016/1-1)

Teraelectronvolt pulsed emission from the Crab Pulsar detected by MAGIC.

ANSOLDI S., ANTONELLI L.A., ANTORANZ P., BABIC A., BANGALE P., BARRES DE ALMEIDA U., BARRIO J.A., BECERRA GONZALEZ J., BEDNAREK W., BERNARDINI E., BIASUZZI B., BILAND A., BLANCH O., BONNEFOY S., BONNOLI G., BORRACCI F., BRETZ T., CARMONA E., CAROSI A., COLIN P., COLOMBO E., CONTRERAS J.L., CORTINA J., COVINO S., DA VELA P., DAZZI F., DE ANGELIS A., DE CANEVA G., DE LOTTO B., DE ONA WILHELMI E., DELGADO MENDEZ C., DI PIERRO F., DOMINIS PRESTER D., DORNER D., DORO M., EINECKE S., EISENACHER GLAWION D., ELSAESSER D., FERNANDEZ-BARRAL A., FIDALGO D., FONSECA M.V., FONT L., FRANTZEN K., FRUCK C., GALINDO D., GARCIA LOPEZ R.J., GARCZARCZYK M., GARRIDO TERRATS D., GAUG M., GODINOVIC N., GONZALEZ MUNOZ A., GOZZINI S.R., HANABATA Y., HAYASHIDA M., HERRERA J., HIROTANI K., HOSE J., HRUPEC D., HUGHES G., IDEC W., KELLERMANN H., KNOETIG M.L., KODANI K., KONNO Y., KRAUSE J., KUBO H., KUSHIDA J., LA BARBERA A., LELAS D., LEWANDOWSKA N., LINDFORS E., LOMBARDI S., LONGO F., LOPEZ M., LOPEZ-COTO R., LOPEZ-ORAMAS A., LORENZ E., MAKARIEV M., MALLOT K., MANEVA G., MANNHEIM K., MARASCHI L., MARCOTE B., MARIOTTI M., MARTINEZ M., MAZIN D., MENZEL U., MIRANDA J.M., MIRZOYAN R., MORALEJO A., MUNAR-ADROVER P., NAKAJIMA D., NEUSTROEV V., NIEDZWIECKI A., NIEVAS ROSILLO M., NILSSON K., NISHIJIMA K., NODA K., ORITO R., OVERKEMPING A., PAIANO S., PALATIELLO M., PANEQUE D., PAOLETTI R., PAREDES J.M., PAREDES-FORTUNY X., PERSIC M., POUTANEN J., PRADA MORONI P.G., PRANDINI E., PULJAK I., REINTHAL R., RHODE W., RIBO M., RICO J., RODRIGUEZ GARCIA J., SAITO T., SAITO K., SATALECKA K., SCALZOTTO V., SCAPIN V., SCHULTZ C., SCHWEIZER T., SHORE S.N., SILLANPAEAE A., SITAREK J., SNIDARIC I., SOBCZYNSKA D., STAMERRA A., STEINBRING T., STRZYS M., TAKALO L., TAKAMI H., TAVECCHIO F., TEMNIKOV P., TERZIC T., TESCARO D., TESHIMA M., THAELE J., TORRES D.F., TOYAMA T., TREVES A., WARD J., WILL M. and ZANIN R.

Abstract (from CDS):

We investigate the extension of the very high-energy spectral tail of the Crab Pulsar at energies above 400GeV. We analyzed ∼320h of good-quality Crab data obtained with the MAGIC telescope from February 2007 to April 2014. We report the most energetic pulsed emission ever detected from the Crab Pulsar reaching up to 1.5TeV. The pulse profile shows two narrow peaks synchronized with those measured in the GeV energy range. The spectra of the two peaks follow two different power-law functions from 70GeV up to 1.5TeV and connect smoothly with the spectra measured above 10GeV by the Large Area Telescope (LAT) on board the Fermi satellite. When making a joint fit of the LAT and MAGIC data above 10GeV the photon indices of the spectra differ by 0.5±0.1. Using data from the MAGIC telescopes we measured the most energetic pulsed photons from a pulsar to date. Such TeV pulsed photons require a parent population of electrons with a Lorentz factor of at least 5x106. These results strongly suggest IC scattering off low-energy photons as the emission mechanism and a gamma-ray production region in the vicinity of the light cylinder.

Abstract Copyright: ∼

Journal keyword(s): gamma rays: stars - pulsars: individual: Crab pulsar - stars: neutron

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 M 1 SNR 05 34 30.9 +22 00 53           ~ 6191 1
2 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5258 0

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