2011ApJ...729....2A

Query : 2011ApJ...729....2A

2011ApJ...729....2A - Astrophys. J., 729, 2 (2011/March-1)

Spectral energy distribution of Markarian 501: quiescent state versus extreme outburst.

ACCIARI V.A., ARLEN T., AUNE T., BEILICKE M., BENBOW W., BOTTCHER M., BOLTUCH D., BRADBURY S.M., BUCKLEY J.H., BUGAEV V., CANNON A., CESARINI A., CIUPIK L., CUI W., DICKHERBER R., DUKE C., ERRANDO M., FALCONE A., FINLEY J.P., FINNEGAN G., FORTSON L., FURNISS A., GALANTE N., GALL D., GODAMBE S., GRUBE J., GUENETTE R., GYUK G., HANNA D., HOLDER J., HUANG D., HUI C.M., HUMENSKY T.B., IMRAN A., KAARET P., KARLSSON N., KERTZMAN M., KIEDA D., KONOPELKO A., KRAWCZYNSKI H., KRENNRICH F., MADHAVAN A.S., MAIER G., McARTHUR S., McCANN A., MORIARTY P., ONG R.A., OTTE A.N., PANDEL D., PERKINS J.S., PICHEL A., POHL M., QUINN J., RAGAN K., REYES L.C., REYNOLDS P.T., ROACHE E., ROSE H.J., SCHROEDTER M., SEMBROSKI G.H., STEELE D., SWORDY S.P., THEILING M., THIBADEAU S., VARLOTTA A., VASSILIEV V.V., VINCENT S., WAKELY S.P., WARD J.E., WEEKES T.C., WEINSTEIN A., WEISGARBER T., WILLIAMS D.A., WOOD M., ZITZER B. (The VERITAS Collaboration), ALEKSIC J., ANTONELLI L.A., ANTORANZ P., BACKES M., BARRIO J.A., BASTIERI D., BECERRA GONZALEZ J., BEDNAREK W., BERDYUGIN A., BERGER K., BERNARDINI E., BILAND A., BLANCH O., BOCK R.K., BOLLER A., BONNOLI G., BORDAS P., BORLA TRIDON D., BOSCH-RAMON V., BOSE D., BRAUN I., BRETZ T., CAMARA M., CARMONA E., CAROSI A., COLIN P., COLOMBO E., CONTRERAS J.L., CORTINA J., COVINO S., DAZZI F., DE ANGELIS A., DE CEA DEL POZO E., DE LOTTO B., DE MARIA M., DE SABATA F., DELGADO MENDEZ C., DIAGO ORTEGA A., DOERT M., DOMINGUEZ A., DOMINIS PRESTER D., DORNER D., DORO M., ELSAESSER D., ERRANDO M., FERENC D., FONSECA M.V., FONT L., GARCIA LOPEZ R.J., GARCZARCZYK M., GAUG M., GIAVITTO G., GODINOVIC N., HADASCH D., HERRERO A., HILDEBRAND D., HOHNE-MONCH D., HOSE J., HRUPEC D., JOGLER T., KLEPSER S., KRAHENBUHL T., KRANICH D., KRAUSE J., LA BARBERA A., LEONARDO E., LINDFORS E., LOMBARDI S., LONGO F., LOPEZ M., LORENZ E., MAJUMDAR P., MAKARIEV M., MANEVA G., MANKUZHIYIL N., MANNHEIM K., MARASCHI L., MARIOTTI M., MARTINEZ M., MAZIN D., MEUCCI M., MIRANDA J.M., MIRZOYAN R., MIYAMOTO H., MOLDON J., MORALEJO A., NIETO D., NILSSON K., ORITO R., OYA I., PAOLETTI R., PAREDES J.M., PARTINI S., PASANEN M., PAUSS F., PEGNA R.G., PEREZ-TORRES M.A., PERSIC M., PERUZZO L., POCHON J., PRADA F., PRADA MORONI P.G., PRANDINI E., PUCHADES N., PULJAK I., REICHARDT I., REINTHAL R., RHODE W., RIBO M., RICO J., RISSI M., RUGAMER S., SAGGION A., SAITO K., SAITO T.Y., SALVATI M., SANCHEZ-CONDE M., SATALECKA K., SCALZOTTO V., SCAPIN V., SCHULTZ C., SCHWEIZER T., SHAYDUK M., SHORE S.N., SIERPOWSKA-BARTOSIK A., SILLANPAA A., SITAREK J., SOBCZYNSKA D., SPANIER F., SPIRO S., STAMERRA A., STEINKE B., STORZ J., STRAH N., STRUEBIG J.C., SURIC T., TAKALO L., TAVECCHIO F., TEMNIKOV P., TERZIC T., TESCARO D., TESHIMA M., TORRES D.F., VANKOV H., WAGNER R.M., WEITZEL Q., ZABALZA V., ZANDANEL F., ZANIN R. (The MAGIC Collaboration), PANEQUE D. and HAYASHIDA M.

Abstract (from CDS):

The very high energy (VHE; E > 100 GeV) blazar Markarian 501 (Mrk 501) has a well-studied history of extreme spectral variability and is an excellent laboratory for studying the physical processes within the jets of active galactic nuclei. However, there are few detailed multiwavelength studies of Mrk 501 during its quiescent state, due to its low luminosity. A short-term multiwavelength study of Mrk 501 was coordinated in 2009 March, focusing around a multi-day observation with the Suzaku X-ray satellite and including γ-ray data from VERITAS, MAGIC, and the Fermi Gamma-ray Space Telescope with the goal of providing a well-sampled multiwavelength baseline measurement of Mrk 501 in the quiescent state. The results of these quiescent-state observations are compared to the historically extreme outburst of 1997 April 16, with the goal of examining variability of the spectral energy distribution (SED) between the two states. The derived broadband SED shows the characteristic double-peaked profile. We find that the X-ray peak shifts by over two orders of magnitude in photon energy between the two flux states while the VHE peak varies little. The limited shift in the VHE peak can be explained by the transition to the Klein-Nishina (KN) regime. Synchrotron self-Compton models are matched to the data and the implied KN effects are explored.

Abstract Copyright: ∼

Journal keyword(s): BL Lacertae objects: individual: Markarian 501 = VER J1653+397 - galaxies: active - gamma rays: galaxies - radiation mechanisms: non-thermal - X-rays: galaxies

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
2 4C 38.41 Bla 16 35 15.49297809 +38 08 04.5005995   18.14 17.97 17.25   ~ 906 1
3 3C 345 Bla 16 42 58.80997043 +39 48 36.9939552   16.81 16.59 16.84   ~ 1808 3
4 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
5 6C 170807+432136 Bla 17 09 41.08658310 +43 18 44.5325307   19.99 19.25 19.67   ~ 113 2
6 7C 172226.89+400715.00 BLL 17 24 05.42881867 +40 04 36.4570720   21.90   19.75   ~ 106 1
7 7C 173240.70+385949.00 BLL 17 34 20.57853650 +38 57 51.4430945   19.5 19 19.00   ~ 232 1

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