The Astrophysical Journal Letters

Spectral Hardening Reveals Afterglow Emergence in Long-duration Fast X-Ray Transients: A Case Study of GRB 250404A/EP250404a

Pub Date : 2025-08-13 DOI: 10.3847/2041-8213/adf552 Yi-Han Iris Yin, Yuan Fang, Bin-Bin Zhang, Chen Deng, Jun Yang, Run-Chao Chen, Yuan Liu, Yehao Cheng, Dong Xu, Xiaofeng Wang, Rongfeng Shen, Rui-Zhi Li, Jirong Mao, Wen-Xiong Li, Alberto Javier Castro-Tirado, Weihua Lei, Shao-Yu Fu, Yuan-Pei Yang, Shuai-Qing Jiang, Jie An, Chun Chen, Zhong-Nan Dong, Guowang Du, Ali Esamdin, Zhou Fan, Haicheng Feng, Lu Feng, Emilio Fernández-García, Xing Gao, Maria Gritsevich, Wei-Jian Guo, Jingwei Hu, You-Dong Hu, Yanlong Hua, Abdusamatjan Iskandar, Junjie Jin, Niu Li, Xia Li, Ziwei Li, Jia-Qi Lin, Dezi Liu, Jinzhong Liu, Qichun Liu, Xiaowei Liu, Xing Liu, Daniele B. Malesani, Ignacio Pérez-García, Hui Sun, Xue-Feng Wu, Yun-Ao Xiao, Ding-Rong Xiong, Shengyu Yan, Beibei Zhang, Jinghua Zhang, Haichang Zhu, Zipei Zhu, Hu Zou, Weimin Yuan and Bing Zhang

Different Inhomogeneous Evolutionary Histories for Uranus and Neptune

Pub Date : 2025-08-13 DOI: 10.3847/2041-8213/adf3a5 Roberto Tejada Arevalo

A JWST View of the Overmassive Black Hole in NGC 4486B

Pub Date : 2025-08-13 DOI: 10.3847/2041-8213/adf728 Behzad Tahmasebzadeh, Matthew A. Taylor, Monica Valluri, Haruka Yoshino, Eugene Vasiliev, Michael J. Drinkwater, Solveig Thompson, Kristen Dage, Patrick Côté, Laura Ferrarese, Tatsuya Akiba, Vivienne Baldassare, Misty C. Bentz, John P. Blakeslee, Holger Baumgardt, Youkyung Ko, Chengze Liu, Ann-Marie Madigan, Eric W. Peng, Joel Roediger, Kaixiang Wang and Tyrone E. Woods