Tootfinder

🇺🇦 #NowPlaying on KEXP's #MorningShow
Neil Diamond:
🎵 Holly Holy
#NeilDiamond
https://susancowsillband.bandcamp.com/track/holly-holy-2
https://open.spotify.com/track/3l1YVg3uZMYbi5mROMRWRY

GW250114 reveals black hole horizon signatures
Neil Lu, Sizheng Ma, Ornella J. Piccinni, Yanbei Chen, Ling Sun
https://arxiv.org/abs/2510.01001 https://arx…

GW250114 reveals black hole horizon signatures
The horizon of a black hole, the "surface of no return," is characterized by its rotation frequency $Ω_H$ and surface gravity $κ$. A striking signature is that any infalling object appears to orbit at $Ω_H$ due to frame dragging, while its emitted signals decay exponentially at a rate set by $κ$ as a consequence of gravitational redshift. Recent theoretical work predicts that the merger phase of gravitational waves from binary black hole coalescences carries direct imprints of the remnant h…