论文标题
PSR〜J2339 $ - $ 0533的伽马射线的轨道调制
Orbital Modulation of Gamma Rays from PSR~J2339$-$0533
论文作者
论文摘要
我们报告了$ p _ {\ rm b} = 4.6 $ hr毫秒毫秒二进制PSR PSR J2339 $ -0533使用11年的Fermi Fermi大面积望远镜数据的100-600 MEV GAMMA射线发射的轨道调节。调制具有很高的意义（机会概率$ p \大约10^{ - 7} $），大约是正弦的，在脉冲级上的连接附近的峰值，仅在低能量100-600 MEV频段中检测到。调制局限于脉冲间隔，表明该变化在2.9毫秒的脉冲信号本身中。这与表现出GEV轨道调制的其他几个已知系统形成对比，因为它们是固定的，并且通常与内部冲击的光束发射有关。调制脉冲信号的起源尚不清楚，尽管我们描述了几种情况，包括加热伴侣的康普顿对光子的扫描。这需要在条纹脉冲星风中高相干。
We report on orbital modulation of the 100-600 MeV gamma-ray emission of the $P_{\rm B}=4.6$ hr millisecond pulsar binary PSR J2339$-$0533 using 11 yr of Fermi Large Area Telescope data. The modulation has high significance (chance probability $p\approx 10^{-7}$), is approximately sinusoidal, peaks near pulsar superior conjunction, and is detected only in the low-energy 100-600 MeV band. The modulation is confined to the on-pulse interval, suggesting that the variation is in the 2.9-ms pulsed signal itself. This contrasts with the few other known systems exhibiting GeV orbital modulations, as these are unpulsed and generally associated with beamed emission from an intrabinary shock. The origin of the modulated pulsed signal is not yet clear, although we describe several scenarios, including Compton upscattering of photons from the heated companion. This would require high coherence in the striped pulsar wind.
