论文标题
搜索Lotaas Pulsars的$γ$ ray排放
Searching for $γ$-ray emission from LOTAAS pulsars
论文作者
论文摘要
低频阵列（Lofar）最近针对北半球的脉冲星进行了一项调查（Lofar绑定全天候调查； Lotaas），发现发现了73个新的脉冲星。为了研究这些脉冲星的特性，我们使用使用大面积望远镜（LAT）在Fermi Gamma-ray太空望远镜（Fermi）上获得的全套调查数据来搜索它们的$γ$ - 射线。我们发现一个候选人与PSRJ1017 $+$ 30的同行，一旦获得时间解决方案，应搜索$γ$ -Ray脉动信号。对于其他Lotaas脉冲星，我们得出了其0.3---500GEV通量上限。 In order to compare the LOTAAS pulsars with the known $γ$-ray pulsars, we also derive the 0.3--500GeV $γ$-ray fluxes for 112 of the latter contained in the Fermi LAT fourth source catalog.Based on the properties of the $γ$-ray pulsars, we derive upper limits on the spin-down luminosities of the LOTAAS pulsars.上限不是很限制，而是帮助表明，大多数Lotaas Pulsars可能具有$ <10^{33} $ erg s $^{ - 1} $旋转的亮度，并且预计无法通过Fermi Lat可检测到。
The LOw-Frequency ARray (LOFAR) has recently conducted a survey (LOFAR Tied-Array All-sky Survey; LOTAAS) for pulsars in the Northern hemisphere that resulted in discoveries of 73 new pulsars. For the purpose of studying the properties of these pulsars, we search for their $γ$-ray counterparts using the all-sky survey data obtained with the Large Area Telescope (LAT) onboard the Fermi Gamma-Ray Space Telescope (Fermi).We analyze the LAT data for 70 LOTAAS pulsars (excluding two millisecond pulsars and one with the longest known spin period of 23.5s). We find one candidate counterpart to PSRJ1017$+$30, which should be searched for the $γ$-ray pulsation signal once its timing solution is available. For other LOTAAS pulsars, we derive their 0.3--500GeV flux upper limits. In order to compare the LOTAAS pulsars with the known $γ$-ray pulsars, we also derive the 0.3--500GeV $γ$-ray fluxes for 112 of the latter contained in the Fermi LAT fourth source catalog.Based on the properties of the $γ$-ray pulsars, we derive upper limits on the spin-down luminosities of the LOTAAS pulsars. The upper limits are not very constraining but help suggest that most of the LOTAAS pulsars probably have $< 10^{33}$erg s$^{-1}$ spin-down luminosities and are not expected to be detectable with Fermi LAT.
