SIMBAD references

2006ApJ...648L.105A - Astrophys. J., 648, L105-L108 (2006/September-2)

Discovery of very high energy γ-rays from Markarian 180 triggered by an optical outburst.

ALBERT J., ALIU E., ANDERHUB H., ANTORANZ P., ARMADA A., ASENSIO M., BAIXERAS C., BARRIO J.A., BARTKO H., BASTIERI D., BECKER J., BEDNAREK W., BERGER K., BIGONGIARI C., BILAND A., BISESI E., BOCK R.K., BORDAS P., BOSCH-RAMON V., BRETZ T., BRITVITCH I., CAMARA M., CARMONA E., CHILINGARIAN A., CIPRINI S., COARASA J.A., COMMICHAU S., CONTRERAS J.L., CORTINA J., CURTEF V., DANIELYAN V., DAZZI F., DE ANGELIS A., DE LOS REYES R., DE LOTTO B., DOMINGO-SANTAMARIA E., DORNER D., DORO M., ERRANDO M., FAGIOLINI M., FERENC D., FERNANDEZ E., FIRPO R., FLIX J., FONSECA M.V., FONT L., FUCHS M., GALANTE N., GARCZARCZYK M., GAUG M., GILLER M., GOEBEL F., HAKOBYAN D., HAYASHIDA M., HENGSTEBECK T., HOHNE D., HOSE J., HSU C.C., JACON P., KALEKIN O., KOSYRA R., KRANICH D., LAATIAOUI M., LAILLE A., LENISA T., LIEBING P., LINDFORS E., LOMBARDI S., LONGO F., LOPEZ J., LOPEZ M., LORENZ E., MAJUMDAR P., MANEVA G., MANNHEIM K., MANSUTTI O., MARIOTTI M., MARTINEZ M., MAZIN D., MERCK C., MEUCCI M., MEYER M., MIRANDA J.M., MIRZOYAN R., MIZOBUCHI S., MORALEJO A., NILSSON K., NINKOVIC J., ONA-WILHELMI E., ORDUNA R., OTTE N., OYA I., PANEQUE D., PAOLETTI R., PAREDES J.M., PASANEN M., PASCOLI D., PAUSS F., PEGNA R., PERSIC M., PERUZZO L., PICCIOLI A., POLLER M., PRANDINI E., RAYMERS A., RHODE W., RIBO M., RICO J., RIEGEL B., RISSI M., ROBERT A., RUGAMER S., SAGGION A., SANCHEZ A., SARTORI P., SCALZOTTO V., SCAPIN V., SCHMITT R., SCHWEIZER T., SHAYDUK M., SHINOZAKI K., SHORE S.N., SIDRO N., SILLANPAA A., SOBCZYNSKA D., STAMERRA A., STARK L.S., TAKALO L., TEMNIKOV P., TESCARO D., TESHIMA M., TONELLO N., TORRES A., TORRES D.F., TURINI N., VANKOV H., VITALE V., WAGNER R.M., WIBIG T., WITTEK W., ZANIN R. and ZAPATERO J.

Abstract (from CDS):

The high-frequency-peaked BL Lacertae object Markarian 180 (Mrk 180) was observed to have an optical outburst in 2006 March, triggering a Target of Opportunity observation with the MAGIC telescope. The source was observed for 12.4 hr, and very high energy γ-ray emission was detected with a significance of 5.5 σ. An integral flux above 200 GeV of (2.3±0.7) x10–11/cm2/s was measured, corresponding to 11% of the Crab Nebula flux. A rather soft spectrum with a photon index of -3.3±0.7 has been determined. No significant flux variation was found.

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Journal keyword(s): Galaxies: BL Lacertae Objects: Individual: Name: Markarian 180 - Gamma Rays: Observations

Simbad objects: 8

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