Solar flares are regularly detected by the Large Area Telescope (LAT) on board the Fermi satellite, however no gamma-ray emission from other stellar eruptions has ever been captured. The Swift detection in April 2014 of a powerful outburst originating from DG CVn, with associated optical and radio emissions, enticed us to search for possible 0.1-100 GeV emission from this flaring nearby binary star using the Fermi/LAT. No gamma-ray emission is detected from DG CVn in 2014, but we report a significant gamma-ray excess in November 2012, at a position consistent with that of the binary. There are no reports of contemporary flaring at other wavelengths from DG CVn or any other source within the error circle of the gamma-ray source. We argue that the gamma-ray flare is more likely to have been associated with a background blazar than with DG CVn and identify a candidate for follow-up study.
X-ray and Hα superflare on an RS CVn-type star, UX Arietis: Constraint on the flare location from radial velocity change during the flare
Chuo University（中央大学）；NASA Goddard Space Flight Center（美国国家航空航天局戈达德太空飞行中心）；The Catholic University of America（美利坚天主教大学）；Kyoto University（京都大学）；Subaru Telescope, National Astronomical Observatory of Japan（日本国立天文台昴星望远镜）；University of Colorado Boulder（科罗拉多大学博尔德分校）；National Solar Observatory（美国国家太阳观测台）；Chiba University（千叶大学）
Fermi-LAT detection of extended gamma-ray emission in the vicinity of SNR G045.7$-$00.4: evidence for escaping cosmic rays interacting with the surrounding molecular clouds
Unexpected gamma-ray signal in the vicinity of 1ES 0229+200
我们报告在BL Lac天体1 ES 0229+200周围区域发现的一个身份不明的伽马射线信号。我们在分析距耀变体不到3°的6.2年费米-LAT数据时偶然发现了它。观察到的计数过量本身表现为检验统计量图中的非预期局部最大值。虽然在这一区域已经确定了几个费米LAT源，但我们无法将它们与该残留信号的位置联系起来。与其他波段可见光源的明确关联也不成功。我们简要地讨论了这种未解决的现象的特点。我们的研究结果表明，陡峭的能谱和点状的性质，这个候选人的伽马射线发射器。
Diffuse gamma-ray emission in the vicinity of open cluster Berkeley 87
Shanghai Astronomical Observatory, Chinese Academy of Sciences（中国科学院上海天文台）；Shanghai Key Laboratory of Space Navigation and Positioning Techniques（上海市空间导航与定位技术重点实验室）；Tsung-Dao Lee Institute, Shanghai Jiao Tong University（上海交通大学李政道研究所）
Extended gamma-ray emission in the vicinity of the Westerlund 1 massive star cluster and Kes 41 supernova remnant seen by the Fermi Large Area Telescope
Univ Toulouse, CNES, CNRS, IRAP（图卢兹大学，法国国家空间研究中心，法国国家科学研究中心，天体物理研究所）；Institut Supérieur de l’Aéronautique et de l’Espace (ISAE-Supaero)（高级航空与航天学院）；Max-Planck-Institut für Kernphysik（马克斯·普朗克核物理研究所）；Université Bordeaux, CNRS, LP2I Bordeaux, UMR 5797（波尔多大学，法国国家科学研究中心，波尔多强相互作用与粒子物理研究所）；INAF Osservatorio Astrofisico Arcetri（意大利国家天体物理研究所阿切特里天文台）
