Lembra da Terra 2.0 (Kepler-452b)? Não pode ser confirmado!

quarta-feira, abril 11, 2018

Kepler's Earth-like Planets Should Not Be Confirmed Without Independent Detection: The Case of Kepler-452b

Fergal Mullally, Susan E. Thompson, Jeffery L. Coughlin, Christopher J. Burke, Jason F. Rowe

(Submitted on 30 Mar 2018)

Source/Fonte: Scientific American

We show that the claimed confirmed planet Kepler-452b (a.k.a. K07016.01, KIC 8311864) can not be confirmed using a purely statistical validation approach. Kepler detects many more periodic signals from instrumental effects than it does from transits, and it is likely impossible to confidently distinguish the two types of event at low signal-to-noise. As a result, the scenario that the observed signal is due to an instrumental artifact can't be ruled out with 99\% confidence, and the system must still be considered a candidate planet. We discuss the implications for other confirmed planets in or near the habitable zone.

Comments: Accepted for publication in AJ

Subjects: Earth and Planetary Astrophysics (astro-ph.EP)

Cite as: arXiv:1803.11307 [astro-ph.EP]

(or arXiv:1803.11307v1 [astro-ph.EP] for this version)

Submission history

From: Fergal Mullally [view email] 

[v1] Fri, 30 Mar 2018 01:37:23 GMT (326kb,D)