TE
TechEcho
Home24h TopNewestBestAskShowJobs
GitHubTwitter
Home

TechEcho

A tech news platform built with Next.js, providing global tech news and discussions.

GitHubTwitter

Home

HomeNewestBestAskShowJobs

Resources

HackerNews APIOriginal HackerNewsNext.js

© 2025 TechEcho. All rights reserved.

A possible planet candidate in an external galaxy detected through X-ray transit [pdf]

2 pointsby bcaulfieldover 3 years ago

1 comment

perihelionsover 3 years ago
Amazing, an exoplanet orbiting (possibly) a black hole!<p>&gt;<i>&quot;If the present-day compact object is a BH, the formation event may have been a “failed supernova” during which relatively little mass was lost. If instead the present-day compact object is a NS, significant mass may have been lost through a supernova, and there may also have been a “kick”. Nevertheless, the presence of the massive star that is today’s donor would have allowed the system to survive and would have moderated the speed of NS’s natal the kick. Just as it is possible for a binary to survive a supernova explosion, it is also possible for wide-orbit planets to stay bound.&quot;</i>