论文标题
PSR J1835 $ -3259B的Gamma-Ray脉动发现球形群集NGC 6652
Discovery of gamma-ray pulsations of PSR J1835$-$3259B in the Globular Cluster NGC 6652
论文作者
论文摘要
由新发现的旋转周期1.83 \，MS Pulsar J1835 $ - $ 3259B在球状集群（GC）NGC〜6652中的动机，我们分析了大面积望远镜（LAT）（fermi Gamma-ray Ray telespope（Fermi Gamma-ray teles）的大面积望远镜（LAT）获得的伽玛射线数据（Fermi Gamma-Ray Ray teutcope）（以5.4 $σ$置信度（加权H检验值为$ \ sim 41 $）的毫秒Pulsar（MSP）。从数据的定时分析中，建立了与无线电相似的脉冲轮廓。因此，我们认为我们已经检测到了MSP的\ gr \发射，并讨论了含义。基于我们的分析结果和对GC中源的不同研究，GC观察到的伽马射线发射可能主要来自该MSP，例如前两种情况，GCS NGC〜6624和NGC〜6626。假设是这种情况，Pulsar在GC的9.46 \，KPC距离处，并具有$ \ leq 4.3 \ leq 4.3 \ times 10^{35} $ erg s $^{ - 1} $的旋转发光度，将具有$ \\ simeq（5.044 \ pm0.44）的gamma-ray luminine s $^{ - 1} $和$ \ gtrsim 0.12 $的伽马射线效率。
Motivated by the newly discovery of a spin period 1.83\,ms pulsar J1835$-$3259B in the globular cluster (GC) NGC~6652, we analyze the gamma-ray data obtained with the Large Area Telescope (LAT) onboard {\it Fermi Gamma-ray Space Telescope (Fermi)} for the GC and detect the pulsations of this millisecond pulsar (MSP) at a 5.4$σ$ confidence level (the weighted H-test value is $\sim 41$). From timing analysis of the data, a pulse profile that is similar to the radio one is established. We thus consider that we have detected the \gr\ emission of the MSP, and discuss the implications. Based on our analysis results and different studies of the sources in the GC, the observed gamma-ray emission from the GC could mainly arise from this MSP, like the previous two cases the GCs NGC~6624 and NGC~6626. Assuming this is the case, the pulsar, at the GC's 9.46\,kpc distance and having a spin-down luminosity of $\leq 4.3\times 10^{35}$ erg s$^{-1}$, would have a gamma-ray luminosity of $\simeq (5.04\pm0.44)\times 10^{34}$ erg s$^{-1}$ and a gamma-ray efficiency of $\gtrsim 0.12$.
