出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：AGILE pointed the Virgo Region for the first time for 3 weeks, starting from the second half of December 2007. We detected two FSRQ: 3C 273 [1] and 3C 279, and a unidentified gamma ray source: AGLJ 1238+0406. The source is positionally consistent with an AGN of the Sloan Digital Survey, namely SDSS J123932.75+044305 at z=1.76. In the 2nd edition of the Roma-BZCAT Multi-frequency Catalogue of Blazars [2] the source is associated with a Flat Spectrum Radio Quasar, BZQ 1239+0443. During the AGILE observation, INTEGRAL observed the same field for 600 ksec. IBIS did not detected the source in hard X-ray. OMC instead detected a weak signal from SDSS J123932.75+044305. AGL J1238+0406 has been already detected at low significance by EGRET [3], integrating the whole mission dataset. Then it was detected by FERMI one year after the AGILE pointing of the Virgo field. We report the simultaneous multiwavelength data obtained for the two periods of high gamma ray activity of the source.
