2009A&A...498...83A


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.17CET09:49:52

2009A&A...498...83A - Astronomy and Astrophysics, volume 498, 83-87 (2009/4-4)

MAGIC upper limits to the VHE gamma-ray flux of 3C454.3 in high emission state.

ANDERHUB H., ANTONELLI L.A., ANTORANZ P., BACKES M., BAIXERAS C., BALESTRA S., BARRIO J.A., BARTKO H., BASTIERI D., BECERRA GONZALEZ J., BECKER J.K., BEDNAREK W., BERGER K., BERNARDINI E., BILAND A., BOCK R.K., BONNOLI G., BORDAS P., BORLA TRIDON D., BOSCH-RAMON V., BRETZ T., BRITVITCH I., CAMARA M., CARMONA E., COMMICHAU S., CONTRERAS J.L., CORTINA J., COSTADO M.T., COVINO S., CURTEF V., DAZZI F., DE ANGELIS A., DE CEA DEL POZO E., DE LOS REYES R., DE LOTTO B., DE MARIA M., DE SABATA F., DELGADO MENDEZ C., DOMINGUEZ A., DORNER D., DORO M., ELSAESSER D., ERRANDO M., FERENC D., FERNANDEZ E., FIRPO R., FONSECA M.V., FONT L., GALANTE N., GARCIA LOPEZ R.J., GARCZARCZYK M., GAUG M., GOEBEL F., HADASCH D., HAYASHIDA M., HERRERO A., HOEHNE-MOENCH D., HOSE J., HSU C.C., HUBER S., JOGLER T., KRANICH D., LA BARBERA A., LAILLE A., LEONARDO E., LINDFORS E., LOMBARDI S., LONGO F., LOPEZ M., LORENZ E., MAJUMDAR P., MANEVA G., MANKUZHIYIL N., MANNHEIM K., MARASCHI L., MARIOTTI M., MARTINEZ M., MAZIN D., MEUCCI M., MEYER M., MIRANDA J.M., MIRZOYAN R., MOLDON J., MOLES M., MORALEJO A., NIETO D., NILSSON K., NINKOVIC J., OTTE N., OYA I., PAOLETTI R., PAREDES J.M., PASANEN M., PASCOLI D., PAUSS F., PEGNA R.G., PEREZ-TORRES M.A., PERSIC M., PERUZZO L., PRADA F., PRANDINI E., PUCHADES N., RHODE W., RIBO M., RICO J., RISSI M., ROBERT A., RUEGAMER S., SAGGION A., SAITO T.Y., SALVATI M., SANCHEZ-CONDE M., SARTORI P., SATALECKA K., SCALZOTTO V., SCAPIN V., SCHWEIZER T., SHAYDUK M., SHINOZAKI K., SHORE S.N., SIDRO N., SIERPOWSKA-BARTOSIK A., SILLANPAEAE A., SITAREK J., SOBCZYNSKA D., SPANIER F., STAMERRA A., STARK L.S., TAKALO L., TAVECCHIO F., TEMNIKOV P., TESCARO D., TESHIMA M., TLUCZYKONT M., TORRES D.F., TURINI N., VANKOV H., VENTURINI A., VITALE V., WAGNER R.M., WITTEK W., ZABALZA V., ZANDANEL F., ZANIN R., ZAPATERO J., VERCELLONE S., DONNARUMMA I., D'AMMANDO F. and TAVANI M.

Abstract (from CDS):

We report upper limits to the very high energy flux (E>100GeV) of the flat spectrum radio quasar 3C454.3 (z=0.859) derived by the Cherenkov telescope MAGIC during the high states of July/August and November/December 2007. We compare the upper limits derived in both time slots with the available quasi-simultaneous MeV-GeV data from the AGILE γ-ray satellite and interpret the observational results in the context of leptonic emission models. The source was observed with the MAGIC telescope during the active phases of July-August 2007 and November-December 2007 and the data were analyzed with the MAGIC standard analysis tools. For the periods around the ends of July and November, characterized by the most complete multifrequency coverage, we constructed the spectral energy distributions using our data together with nearly simultaneous multifrequency (optical, UV, X-ray and GeV) data. Only upper limits can be derived from the MAGIC data. The upper limits, once corrected for the expected absorption by the extragalactic background light, together with nearly simultaneous multifrequency data, allow us to constrain the spectral energy distribution of 3C454.3. The data are consistent with the model expectations based on inverse Compton scattering of the ambient photons from the broad line region by relativistic electrons, which robustly predicts a sharp cut-off above 20-30GeV.

Abstract Copyright:

Journal keyword(s): galaxies: quasars: individual: 3C454.3 - gamma rays: observations - gamma rays: theory

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 3C 66A BLL 02 22 39.6111630878 +43 02 07.797284539   15.71 15.21 14.5   ~ 773 1
2 UGC 1841 Sy1 02 23 11.41124 +42 59 31.3840   15.71 14.81     ~ 524 2
3 8C 0716+714 BLL 07 21 53.4484901266 +71 20 36.362058601   15.5 14.17 14.27   ~ 1101 1
4 7C 1219+2830 BLL 12 21 31.6902446545 +28 13 58.500383827   16.81 16.11 14.24   ~ 763 1
5 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6038 3
6 3C 279 QSO 12 56 11.1664521013 -05 47 21.531840471   18.01 17.75 15.87   ~ 2636 2
7 NAME BL Lac BLL 22 02 43.2913773726 +42 16 39.978417860   15.66 14.72     ~ 1975 1
8 3C 454.3 QSO 22 53 57.74798 +16 08 53.5611   16.57 16.10 15.22   ~ 2441 2

    Equat.    Gal    SGal    Ecl

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2019.11.17-09:49:52

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