conv.

All stories
ScienceQuiet 11d · day 14

JWST rules out exomoons around LP 890-9 c; Kipping shows how to find them

A new method using repeated observations could detect exomoons despite instrument noise, though this target showed none.

newest coverage 10d agosummary written 9d ago3 pieces MastodonNewswiresGoogle News

What to know

  • JWST has not yet detected any exomoons despite expectations, but a new method by Columbia's David Kipping shows how to find them using repeated observations.
  • The technique works by combining data from multiple planet transits to average out instrumental noise and stellar activity, significantly increasing sensitivity.
  • Testing on LP 890-9 c ruled out moons larger than 0.1 Earth radii with 95% confidence, representing the most sensitive exomoon search ever conducted outside our solar system.

“Red noise is caused by slow, wandering changes in the detector, such as when it's warming up, its pointing drifts slightly, or even by solar spots on the surface of the star itself.”

Phys.org article · Phys.org

David Kipping Columbia astronomer, Cool Worlds host

JWST rules out exomoons around LP 890-9 c; Kipping shows how to find them
universetoday.com

How it unfolded 2 developments, newest first · click a bar or a number to jump articlesposts

Peak 2 pieces in 4h at Sep 13, 5 PM; 3 pieces over 14 days (2 articles · 1 post) Sep 10, 9 AM — 1 piece · 1 post — Mastodon 1Sep 10, 1 PM — quietSep 10, 5 PM — quietSep 10, 9 PM — quietSep 11, 1 AM — quietSep 11, 5 AM — quietSep 11, 9 AM — quietSep 11, 1 PM — quietSep 11, 5 PM — quietSep 11, 9 PM — quietSep 12, 1 AM — quietSep 12, 5 AM — quietSep 12, 9 AM — quietSep 12, 1 PM — quietSep 12, 5 PM — quietSep 12, 9 PM — quietSep 13, 1 AM — quietSep 13, 5 AM — quietSep 13, 9 AM — quietSep 13, 1 PM — quietSep 13, 5 PM — 2 pieces · 2 articles — Google News 1, Newswires 1Sep 13, 9 PM — quietSep 14, 1 AM — quietSep 14, 5 AM — quietSep 14, 9 AM — quietSep 14, 1 PM — quietSep 14, 5 PM — quietSep 14, 9 PM — quietSep 15, 1 AM — quietSep 15, 5 AM — quietSep 15, 9 AM — quietSep 15, 1 PM — quietSep 15, 5 PM — quietSep 15, 9 PM — quietSep 16, 1 AM — quietSep 16, 5 AM — quietSep 16, 9 AM — quietSep 16, 1 PM — quietSep 16, 5 PM — quietSep 16, 9 PM — quietSep 17, 1 AM — quietSep 17, 5 AM — quietSep 17, 9 AM — quietSep 17, 1 PM — quietSep 17, 5 PM — quietSep 17, 9 PM — quietSep 18, 1 AM — quietSep 18, 5 AM — quietSep 18, 9 AM — quietSep 18, 1 PM — quietSep 18, 5 PM — quietSep 18, 9 PM — quietSep 19, 1 AM — quietSep 19, 5 AM — quietSep 19, 9 AM — quietSep 19, 1 PM — quietSep 19, 5 PM — quietSep 19, 9 PM — quietSep 20, 1 AM — quietSep 20, 5 AM — quietSep 20, 9 AM — quietSep 20, 1 PM — quietSep 20, 5 PM — quietSep 20, 9 PM — quietSep 21, 1 AM — quietSep 21, 5 AM — quietSep 21, 9 AM — quietSep 21, 1 PM — quietSep 21, 5 PM — quietSep 21, 9 PM — quietSep 22, 1 AM — quietSep 22, 5 AM — quietSep 22, 9 AM — quietSep 22, 1 PM — quietSep 22, 5 PM — quietSep 22, 9 PM — quietYesterday, 1 AM — quietYesterday, 5 AM — quietYesterday, 9 AM — quietYesterday, 1 PM — quietYesterday, 5 PM — quietYesterday, 9 PM — quietToday, 1 AM — quietToday, 5 AM — quiet 1–2
Sep 11Sep 12Sep 13Sep 14Sep 15Sep 16Sep 17Sep 18Sep 19Sep 20Sep 21Sep 22now · 6:44 AM ET
  1. 1

    Analysis of LP 890-9 c rules out large moons with 95% confidence

    Kipping analyzed twelve JWST transits of exoplanet LP 890-9 c, confirming no moons larger than 0.1 Earth radii orbit it—making this the most sensitive exomoon search ever conducted outside our solar system, despite the planet's proximity to its host star making long-term moon survival unlikely.

  2. 2

    Kipping publishes exomoon detection method in arXiv preprint

    Columbia astronomer David Kipping released a paper on arXiv showing JWST can detect exomoons by analyzing multiple transits of the same planet to overcome instrumental noise—a departure from previous single-transit approaches.