论文标题
银河平面中费米 - 拉特瞬变的更新，包括2020年中期Cygnus X-3的强大活性
An update on Fermi-LAT transients in the Galactic plane, including strong activity of Cygnus X-3 in mid-2020
论文作者
论文摘要
我们使用13年的Fermi大面积望远镜数据进行了搜索银河瞬态伽马射线源。该搜索基于最近开发的可变大小的滑动时间窗口（VSSTW）分析，旨在研究来自Novae，Gamma-Ray二进制组和微Quasars的二元系统的可变伽马射线发射。 Compared to the previous search for transient sources at random positions in the sky with 11.5 years of data, we included gamma rays with energies down to 500 MeV, increased a number of test positions, and extended the data set by adding data collected between February 2020 and July 2021. These refinements allowed us to detect an additional three novae, V1324 Sco, V5855 Sgr, V357 Mus, and one伽马射线二进制，PSR B1259-63，带有VSSTW方法。我们的搜索显示，从微Quasar X-3出发的伽马射线耀斑发生在2020年。当应用于相等的数据中时，该分析为我们提供了检测到PSR B1259-63，LS I +61 303，PSR J2021 +4026，以及Cygnus X-3的重复信号的检测。虽然2020年中期的Cygnus X-3在伽马射线中亮了，但它处于柔软的X射线状态，我们发现其伽马射线发射是通过轨道时期调节的。
We present a search for Galactic transient gamma-ray sources using 13 years of the Fermi Large Area Telescope data. The search is based on a recently developed variable-size sliding-time-window (VSSTW) analysis and aimed at studying variable gamma-ray emission from binary systems, including novae, gamma-ray binaries, and microquasars. Compared to the previous search for transient sources at random positions in the sky with 11.5 years of data, we included gamma rays with energies down to 500 MeV, increased a number of test positions, and extended the data set by adding data collected between February 2020 and July 2021. These refinements allowed us to detect an additional three novae, V1324 Sco, V5855 Sgr, V357 Mus, and one gamma-ray binary, PSR B1259-63, with the VSSTW method. Our search revealed a gamma-ray flare from the microquasar, Cygnus X-3, occurred in 2020. When applied to equal quarters of the data, the analysis provided us with detections of repeating signals from PSR B1259-63, LS I +61 303, PSR J2021+4026, and Cygnus X-3. While the Cygnus X-3 was bright in gamma rays in mid-2020, it was in a soft X-ray state and we found that its gamma-ray emission was modulated with the orbital period.
