SIMBAD references

2000A&A...353..847A - Astronomy and Astrophysics, volume 353847-852 (2000/1-3)

HEGRA search for TeV emission from BL Lacertae objects.

AHARONIAN F.A., AKHPERJANIAN A.G., BARRIO J.A., BERNLOEHR K., BOJAHR H., CALLE I., CONTRERAS J.L., CORTINA J., DAUM A., DECKERS T., DENNINGHOFF S., FONSECA V., GONZALEZ J.C., HEINZELMANN G., HEMBERGER M., HERMANN G., HESS M., HEUSLER A., HOFMANN W., HOHL H., HORNS D., IBARRA A., KANKANYAN R., KESTEL M., KETTLER J., KOEHLER C., KONOPELKO A., KORNMAYER H., KRANICH D., KRAWCZYNSKI H., LAMPEITL H., LINDNER A., LORENZ E., MAGNUSSEN N., MANG O., MEYER H., MIRZOYAN R., MORALEJO A., PADILLA L., PANTER M., PETRY D., PLAGA R., PLYASHESHNIKOV A., PRAHL J., PUEHLHOFER G., RAUTERBERG G., RENAULT C., RHODE W., ROEHRING A., SAHAKIAN V., SAMORSKI M., SCHMELE D., SCHILLING M., SCHROEDER F., STAMM W., VOELK H.J., WIEBEL-SOOTH B., WIEDNER C., WILLMER M. and WITTEK W.

Abstract (from CDS):

The HEGRA system of four Imaging Atmospheric Cherenkov Telescopes (IACTs) has been used to extensively observe extragalactic objects. In this paper we describe the search for TeV emission from nine very promising potential TeV sources, namely eight ``high frequency'' BL Lac objects (HBLs), and the object ``BL Lacertae'' itself. These objects were observed during 1997 and 1998 seasons, with total integration times ranging between one and fifteen hours. No evidence for emission was found from any of these objects and the upper limits on the integral energy flux above ∼750 GeV are on the level of a few times 10–12erg/cm2/s. For the two objects BL Lacertae and 1ES 2344+51.4, we discuss the astrophysical implications of the TeV flux upper limit, using also information from the X-ray and γ-ray bands as measured with the All Sky Monitor (ASM) of RXTE (1.3-12.0keV) and with EGRET (30MeV-20GeV).

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Journal keyword(s): galaxies: BL Lacertae objects: general - galaxies: BL Lacertae objects: individual: 1ES 2344+51.4 - galaxies: BL Lacertae objects: individual: BL Lac - gamma rays: observations

Simbad objects: 11

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