Tag Archives: theorem

Sign up for the Starts With a Bang newsletter Travel the universe with Dr. Ethan Siegel as he answers the biggest questions of all. It’s hard to believe, but it’s now been 10 full years since the twin Advanced LIGO detectors — in Hanford, WA and Livingston, LA — were completed and turned on for the first time. Just days …

But the final reverberations as the newly formed black hole settled into its new state, aka the ringdown, from that first event were significantly fainter, and scientists were unable to distinguish between the ringing from the initial collision and the ringdown. For GW250114, LIGO’s improved sensitivity meant that scientists could measure the frequency and duration of the merged black hole’s …