We report on our optical monitoring of the BL Lac object S5 1803+78 from 1996 to 2011. The source showed no clear periodicity, but a time scale of about 1300 days between major flares is possibly present. No systematic trend of the color index with flux variations is evident, at variance with other BL Lacs. In one flare, however, the source was bluer in the rising phase and redder in the falling one.
Two Gamma-ray flares were detected by Fermi-GST during our monitoring: on the occasion of only one of them we found simultaneous optical brightening. A one-zone Synchrotron Self Compton (SSC) model appears too simple to explain the source behavior.
A Multiwavelength Study of a Long-Duration VHE Flare from BL Lacertae with VERITAS
CP3-Origins, University of Southern Denmark（南丹麦大学）；DePauw University（迪堡大学）；Temple University（天普大学）；University of Utah（犹他大学）；Washington University（华盛顿大学）；University of California, Los Angeles（加州大学洛杉矶分校）；California Polytechnic State University（加州州立理工大学）；Santa Cruz Institute for Particle Physics and Department of Physics, University of California, Santa Cruz（加州大学圣克鲁兹分校粒子物理研究所及物理系）
Tidal disruption and evaporation of rubble-pile and monolithic bodies as a source of flaring activity in Sgr A^\star$
The University of Tokyo（东京大学）；University of Michigan（密歇根大学）；University of California, Santa Barbara（加州大学圣塔芭芭拉分校）；University of California, Santa Cruz（加州大学圣克鲁兹分校）；Tsinghua University（清华大学）
Decoding the jet of BL Lacertae using relativistic magneto-hydrodynamics
Finnish Centre for Astronomy with ESO, University of Turku（芬兰ESO天文中心，图尔库大学）；Aalto University Metsähovi Radio Observatory（阿尔托大学梅塔霍维射电天文台）；Max-Planck-Institut für Radioastronomie（马克斯·普朗克射电天文研究所）；Anton Pannekoek Institute for Astronomy, University of Amsterdam（阿姆斯特丹大学安东·潘内科克天文学研究所）；Institute of Astrophysics, Foundation for Research and Technology - Hellas（希腊研究基金会天体物理研究所）；Institute of Astrobiology, University of Crete（克里特大学天体生物学研究所）；Institute for Astrophysical Research, Boston University（波士顿大学天体物理研究所）；Saint Petersburg State University（圣彼得堡国立大学）；Institut de Radioastronomie Millimétrique（毫米波射电天文研究所）；Instituto de Astrofísica de Andalucía, IAA-CSIC（安达卢西亚天体物理研究所，西班牙国家研究委员会）；Department of Physics and Astronomy, University of Mississippi（密西西比大学物理与天文学系）
Simultaneous Multi-band Optical Follow-up Observations of a Gamma-Ray Flare in BL Lacertae
South-Western Institute for Astronomy Research, Yunnan Key Laboratory of Survey Science, Yunnan University（西南天文研究所，云南省巡天科学重点实验室，云南大学）；Yunnan Observatories, Chinese Academy of Sciences（中国科学院云南天文台）；Key Laboratory of Colleges and Universities in Yunnan Province for High-energy Astrophysics, Department of Physics, Yunnan Normal University（云南省高能天体物理高校重点实验室，云南师范大学物理系）；Guangxi Key Laboratory for the Relativistic Astrophysics（广西相对论天体物理学重点实验室）；Janusz Gil Institute of Astronomy, University of Zielona Góra（齐尔纳格拉大学扬努什·吉尔天文学研究所）；CAS Key Laboratory of Space Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences（中国科学院空间天文与技术重点实验室，中国科学院国家天文台）
