BeppoSAX Observations of Unprecedented Synchrotron Activity in the BL Lacertae Object Markarian 501
- Authors: Elena Pian, Giuseppe Vacanti, Gianpiero Tagliaferri, Gabriele Ghisellini, Laura Maraschi, Aldo Treves, C. Megan Urry, Fabrizio Fiore, Paolo Giommi, Eliana Palazzi, Lucio Chiappetti, and Rita M. Sambruna
Pian et
al.
1998 The Astrophysical Journal Letters 492
L17.
