The Highest Historical X-ray Brightness State in HBL Source 1ES 1218+304
: Ramazani Vandad Fallah, Bonneli Giacomo, Cerruti Matteo
Publisher: R.E. Rutledge
: 2019
: Astronomer's Telegram
: The Astronomer's Telegram
: 12365
: https://www.astronomerstelegram.org/?read=12365
1ES 1218+304, a TeV-detected HBL object, located at redshift z=0.182 is showing flaring activity in very high energy (VHE, E {\textgreater} 100 GeV) gamma-rays and R-band optical.