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The GN-z11-Flash Event can be a Satellite Glint
Research Notes of the AAS Pub Date : 2021-02-17 , DOI: 10.3847/2515-5172/abe540
Guy Nir , Eran O. Ofek , Avishay Gal-Yam

Recently Jiang et al. reported the discovery of a possible short duration transient, detected in a single image, spatially associated with a z∼11 galaxy. Jiang et al. and Kann et al. suggested the transient originates from a γ-Ray Burst (GRB), while Padmanabhan & Loeb argued the flash is consistent with a supernova shock breakout event of a 300 M Population III star. Jiang et al. argued against the possibility that this event originated from light reflected off a satellite. Here we show that reflection of sunlight from a high-orbit satellite or a piece of space debris is a valid and reasonable explanation. As shown in recent works, the rate of point-like satellite reflections, brighter than 11th magnitude, is >10 deg−2 day−1 near the equatorial plane. At higher declinations the rate is 5–50 times lower, but still significant: about four orders of magnitudes higher than the rate estimated for GRBs.



中文翻译:

GN-z11-Flash 事件可以是卫星闪烁

最近姜等人。报告发现了一个可能的短持续时间瞬变,在单个图像中检测到,在空间上与z~ 11 星系相关。江等人。和 Kann 等人。建议瞬变源自γ射线暴 (GRB),而 Padmanabhan 和 Loeb 则认为该闪光与 300 M 星族 III 恒星的超新星冲击爆发事件一致 。江等人。反对这一事件起源于卫星反射光的可能性。在这里,我们表明来自高轨道卫星或一块空间碎片的阳光反射是有效且合理的解释。如最近的工作所示,比 11 等更亮的点状卫星反射率 >10 度-2在赤道平面附近的 第-1天。在较高的赤纬时,该速率低 5-50 倍,但仍然很重要:比 GRB 估计的速率高约四个数量级。

更新日期:2021-02-17
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