The LOw-Frequency ARray (LOFAR) has recently conducted a survey (LOFAR Tied-Array Allsky 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 23.5 s). We find one candidate counterpart to PSR J1017+30, which should be searched for the γ-ray pulsation signal once its timing solution is available. For other LOTAAS pulsars, we derive their 0.3–500 GeV flux upper limits. In order to compare the LOTAAS pulsars with the known γ-ray pulsars, we also derive the 0.3–500 GeV 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 < 10³³ erg s⁻¹ spin-down luminosities and are not expected to be detectable with Fermi LAT.

低频阵列（LOFAR）最近对北半球的脉冲星进行了调查（LOFAR Tied-Array Allsky Survey；LOTAAS），结果发现了73颗新脉冲星。为了研究这些脉冲星的特性，我们使用费米伽马射线太空望远镜 (Fermi)上的大面积望远镜 (LAT) 获得的全天巡天数据搜索它们的γ射线对应物。我们分析了 70 颗 LOTAAS 脉冲星的 LAT 数据（不包括 2 毫秒脉冲星和已知最长自旋周期为 23.5 s 的一颗）。我们找到了 PSR J1017+30 的一个候选对应物，应该搜索它的γ-射线脉动信号一旦其计时解决方案可用。对于其他 LOTAAS 脉冲星，我们推导出它们的 0.3-500 GeV 通量上限。为了将 LOTAAS 脉冲星与已知的γ射线脉冲星进行比较，我们还推导出了包含在Fermi LAT 第四源目录中的 112 个后者的 0.3-500 GeV γ射线通量。根据γ射线脉冲星的特性，我们推导出了LOTAAS脉冲星自旋下降光度的上限。上限不是很严格，但有助于表明大多数 LOTAAS 脉冲星可能具有 < 10 ³³ erg s ^{-1 的}自旋下降光度，预计不会被费米LAT检测到。