https://www.astronomerstelegram.org Blazar, from The Astronomer's Telegram en-us https://www.astronomerstelegram.org/?read=18013 A. Holzmann Airasca and P. Monti-Guarnieri, on behalf of the Fermi Large Area Telescope Collaboration A. Holzmann Airasca and P. Monti-Guarnieri, on behalf of the Fermi Large Area Telescope Collaboration a.holzmannairasca@unitn.it Credentialed by: Giovanni La Mura (giovanni.lamura@inaf.it) The Astronomer's Telegram ATel18013 In ATel #17968, we reported the Fermi-LAT detection of renewed activity from the flat-spectrum radio quasar 3C 395, with a daily averaged gamma-ray flux (E > 100MeV) of (3.2+/-0.3) X 10^-6 photons cm^-2 s^-1 (statistical uncertainty only), observed on August 15, 2026. ... 2026-08-26T15:30:19-00:00 https://www.astronomerstelegram.org/?read=17999 S. Duerr, L. Lehmann, B. Lehmann, O. Domann, E. Bommert, M. Heemskerk, F. Lach, F. Pfeuffer, H. Reinhart, R. Reinhart, M. Feige, D. Reinhart, R. Steineke, N. Zottmann, C. Lorey K. Mannheim D. Elsaesser S. Duerr, L. Lehmann, B. Lehmann, O. Domann, E. Bommert, M. Heemskerk, F. Lach, F. Pfeuffer, H. Reinhart, R. Reinhart, M. Feige, D. Reinhart, R. Steineke, N. Zottmann, C. Lorey K. Mannheim D. Elsaesser dominik.elsaesser@tu-dortmund.de Credentialed by: Dominik Elsaesser (dominik.elsaesser@tu-dortmund.de) The Astronomer's Telegram ATel17999 The flat-spectrum radio quasar S5 1044+71 (also known as 6C 104451+715930) at R.A. = 10 48 27.6199 and Dec. = +71 43 35.9384 in the ICRS (J2000) coordinate system; z = 1.150 (data from the Simbad Astronomical Database) reached a notably high brightness two nights ago with an optical magnitude of 15.882 & #177; 0.012 in the R band. ... 2026-08-23T13:44:36-00:00 https://www.astronomerstelegram.org/?read=17968 C. Bartolini, Giovanni La Mura on behalf of the Fermi Large Area Telescope Collaboration C. Bartolini, Giovanni La Mura on behalf of the Fermi Large Area Telescope Collaboration chiara.bartophd@gmail.com Credentialed by: Chiara Bartolini (chiara.bartophd@gmail.com) The Astronomer's Telegram ATel17968 The Large Area Telescope (LAT), one of the two instruments on the Fermi Gamma-ray Space Telescope, has observed renewed gamma-ray activity from a source positionally consistent with the flat-spectrum radio quasar 3C 395, also known as 4C +31.52, B2 1901+31 and 4FGL J1902.8+3201 (Abdollahi et al. ... 2026-08-15T05:58:23-00:00 https://www.astronomerstelegram.org/?read=17938 Guangman Xiang, Min Zha, Zhiguo Yao, Jianeng Zhou and Yi Xing report on behalf of the LHAASO Collaboration Guangman Xiang, Min Zha, Zhiguo Yao, Jianeng Zhou and Yi Xing report on behalf of the LHAASO Collaboration gmxiang@ihep.ac.cn Credentialed by: Guangman Xiang (gmxiang@ihep.ac.cn) The Astronomer's Telegram ATel17938 We report the detection of a gamma-ray signal from the direction of the extreme high-synchrotron-peaked BL Lac object (EHBL) 1ES 1028+511 (RA = 10h31m18.5s, Dec = +50d53m36.0s) at a redshift of z = 0.361 (Polomski et al. ... 2026-08-03T15:16:11-00:00 https://www.astronomerstelegram.org/?read=17935 J. W. Hu, C. C. Jin, H. Feng, R. D. Liang, W. Chen, H. W. Pan, Y. J. Zhang on behalf of the Einstein Probe Collaboration, Adithiya Dinesh, Janeth Valverde, Chiara Bartolini, G. La Mura, on behalf of the Fermi Large Area Telescope Collaboration. J. W. Hu, C. C. Jin, H. Feng, R. D. Liang, W. Chen, H. W. Pan, Y. J. Zhang on behalf of the Einstein Probe Collaboration, Adithiya Dinesh, Janeth Valverde, Chiara Bartolini, G. La Mura, on behalf of the Fermi Large Area Telescope Collaboration. adinesh@ucm.es Credentialed by: Giovanni La Mura (giovanni.lamura@inaf.it) The Astronomer's Telegram ATel17935 On July 23, 2026, the Large Area Telescope (LAT), one of the two instruments on the Fermi Gamma-ray Space Telescope, observed gamma-ray flaring activity from a source positionally consistent with the flat-spectrum radio quasar 4C +10.45, also known as 4FGL J1608.7+1029 (Abdollahi et al. ... 2026-08-01T21:00:16-00:00