论文标题
4FGL J0935.3+0901的光学光曲线:耀眼的黑寡妇候选人
Optical Light Curve of 4FGL J0935.3+0901: A Flaring Black Widow Candidate
论文作者
论文摘要
我获得了费米源4FGL J0935.3+0901的紧凑型二进制候选者的时间序列光度法。在2.44 hr轨道调制上的超级伪造是日常变化,并且经常发生爆炸,如几个雷德寡妇和黑寡妇脉冲星(MSP)所示。短轨道时期有利于黑寡妇。虽然$ \ leq 1 $ mag的调制小于大多数黑寡妇的调制,但它可能表明低轨道倾斜度。尽管已发表的光谱显示出强大的发射线,但光曲线表现出伴侣恒星的脉冲星加热,而不是过渡MSP的积聚盘发射。发射线和耀斑发生在相同的物体中,可能是由相对论的脉冲星和伴侣恒星驱动的风之间的冲击动力。我还从Zwicky瞬态设施中恢复了光度法的时期。跨越4年的MDM天文台和ZTF数据衍生出的相互联系的胚片的周期为0.10153276(36)天,并为假定Pulsar的上升节点时期。
I obtained time-series photometry of the compact binary candidate for the Fermi source 4FGL J0935.3+0901. Superposed on the 2.44 hr orbital modulation are day-to-day variations and frequent flaring as seen in several redback and black widow millisecond pulsars (MSPs). The short orbital period favors a black widow. While the modulation of $\leq 1$ mag is smaller than that of most black widows, it could indicate a low orbital inclination. Although a published optical spectrum shows strong emission lines, the light curve evinces pulsar heating of the companion star rather than accretion-disk emission of a transitional MSP. Emission lines and flaring occur in the same objects, probably powered by shocks between the relativistic pulsar wind and a wind driven off the companion star. I also recovered the period in photometry from the Zwicky Transient Facility. A phase-connected ephemeris derived from MDM Observatory and ZTF data spanning 4 years yields a period of 0.10153276(36) days and an epoch for the ascending node of the putative pulsar.