论文标题
长时间持续时间GRB 211211a之后的强烈NIR排放：粉尘加热作为Kilonova的替代品
Strong NIR emission following the long duration GRB 211211A: Dust heating as an alternative to a kilonova
论文作者
论文摘要
长时间持续时间GRB 211211a之后观察到的延长的近红外（NIR）发射与从驱动到圆周螺旋培养基（CSM）的电击发射的余辉发射不一致，并且随着可能的基础超新星的发射。因此，已经提出，观察到的NIR通量是Kilonova的标志 - 一种放射性喷射，与二进制中子星合并GW170817的结果相似。我们在这里提出了另一种合理的解释。我们表明，NIR通量与灰尘的热发射一致，紫外线加热和通过GRB射流等离子体与CSM的相互作用产生的软X射线辐射。 Waxman＆Draine预测了这种NIR的发射，用于居住在附近或与大量分子云的GRB。灰尘NIR排放方案与$ z \ Lessim1 $的GRB一致。对GRB 211211A环境的检查表明，至少有两个宿主 - 盖拉克斯候选者，一个$ z = 0.076 $，另一个为$ z = 0.459 $。 $ z = 0.459 $的可能性也与GRB余辉的光曲线中的超新星签名未检测，并且具有典型的GRB $γ$ ray-ray-ray-ray-ray ray Energy for Grb 211211a的通知。
The prolonged near infrared (NIR) emission observed following the long duration GRB 211211A is inconsistent with afterglow emission from the shock driven into the circum-stellar medium (CSM), and with emission from a possible underlying supernova. It has therefore been suggested that the observed NIR flux is the signature of a kilonova -- a radioactive ejecta that is similar to the outcome of the binary neutron star merger GW170817. We propose here an alternative plausible explanation. We show that the NIR flux is consistent with thermal emission from dust, heated by UV and soft X-ray radiation produced by the interaction of the GRB jet plasma with the CSM. This NIR emission was predicted by Waxman & Draine for GRBs residing near or withing massive molecular clouds. The dust NIR emission scenario is consistent with a GRB at $z\lesssim1$. Inspection of the environment of GRB 211211A suggests that there are at least two host-galaxy candidates, one at $z=0.076$ and the other at $z=0.459$. The $z=0.459$ possibility is also consistent with the non-detection of a supernova signature in the light curve of the GRB afterglow, and with a typical GRB $γ$-ray energy for the fluence of GRB 211211A.
