Predicted unseen exoplanet found
Washington: Astronomers have now confirmed the presence of Kepler-88 c, an unseen planet that had been previously predicted thanks to the gravitational perturbation it caused on its transiting brother planet, Kepler-88 b.
Searching for periodic transits in hundreds of thousands of stars was the primary goal of the Kepler space telescope. More than 3,500 of such periodic transits were found during the 4 years of the mission.
Planets that share the same host star gravitationally interact with each other. This interaction between planets can cause perturbations in the predicted times of transit of planets in multi-planetary systems.
Lead author Susana Barros, a researcher at the Laboratoire d`Astrophysique de Marseille (LAM), said that this is called transit timing variations (TTV).
The TTV technique is sensitive to planets in multiple systems down to the mass of the Earth, and can therefore be used to unveil the existence of non-transiting planets, that cause perturbations in the orbital motion of transiting planets.
A careful analysis of the dynamical interaction between planets, previously performed by a team led by David Nesvorny (Southwest Research Institute), predicted that this system had two planets near a two-to-one resonance (the orbital period of the unseen outer planet is exactly two times longer than the transiting inner planet).
Using the SOPHIE velocimeter, the team independently measured the mass of Kepler-88 c.
The inferred mass for the unseen planet is in perfect agreement with the value that was predicted from TTV.
More from India
More from World
More from Sports
More from Entertaiment
- Mathura SSP receives death threat letter, message for PM Modi
- Reservation issue: Police register case against Bainsla, 20 others
- Zee Media exclusive chat with 'Welcome to Karachi' cast
- Zee Media exclusive interview with Haryana CM Manohar Lal Khattar
- UP Minister allegedly threatens, abuses Gonda businessman
- Manali: Heavy corruption found in environmental taxes
- Watch: Fast N Facts @ 7:30pm
- Aapke Sitare: Astro prediction for May 24, 2015
- One year of Modi govt: How satisfied is the common man?
- Five unmanned parachutes spotted over Mumbai airport
- UP: Jammu-bound Muri Express derails in Kaushambi
- Mumbai architecture creates double decker bus from scrap!
- Jaipur girl Mini Rajpal wins Miss India Deaf 2015!
- One year of Modi govt: How satisfied is the common man? Part-2
- CBSE Board Class 12th Exam Results 2015 declared
- IPL 2015 Final: MI vs CSK - As it happened...
- CBSE.nic.in 12th XII Results 2015: CBSE Board (cbseresults.nic.in) Class 12th XII Exam Results 2015 to be announced on May 25
- Heatwave continues in North India; death toll in Andhra Pradesh, Telangana more than 400
- IPL 2015 final: Mumbai Indians thrash Chennai Super Kings by 41 runs to lift second title
- Organisation demands re-examination of AIPMT 2015
- Death threat to PM Narendra Modi ahead of Mathura rally sends police into tizzy
- Kejriwal completes 100 days in office, AAP says centre 'shadow boxing' over row with LG
- CBSE Class 12th Board Results 2015 to be announced on Monday, May 25
- Check cbseresults.nic.in for CBSE Class 12 result 2015
- Online filing of applications for UPSC civil services exam begins
- LIVE - Cbse.nic.in & cbseresults.nic.in Class 12th XII Results 2015: CBSE Board Class 12th XII Exam Results 2015 to be announced shortly
- Not just today, Muslims feeling alienated since 1947: Najma Heptulla
- Heatwave claims over 550 lives so far, Delhi saw hottest day
- Police register case against Bainsla, 20 others as Gujjar agitation continues
- Pakistan criticizes Defence Minister Parrikar's terrorism remarks