Electromagnetic Signals from Planetary Collisions | Zendy

Bing Zhang | Zendy; Steinn Sigurðsson | Zendy

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Electromagnetic Signals from Planetary Collisions

Author(s) -

Bing Zhang,

Steinn Sigurðsson

Publication year - 2003

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/379186

Subject(s) - planet , afterglow , physics , collision , astronomy , exoplanet , astrobiology , flash (photography) , jupiter (rocket family) , event (particle physics) , astrophysics , gamma ray burst , spacecraft , computer science , optics , computer security

Planet-planet collisions are expected during the early stages of theformation of extra-solar planets, and are also possible in mature planetarysystems through secular planet-planet perturbations. We investigate theelectromagnetic signals accompanied with these planetary collisions and theirevent rate, and explore the possibility of directly detecting such events. Atypical Earth-Jupiter collision would give rise to a prompt EUV-soft-X-rayflash lasting for hours and a bright IR afterglow lasting for thousands ofyears. It is suggested that with the current and forthcoming observationaltechnology and facilities, some of these collisional flashes or thepost-collision remnants could be discovered.Comment: 5 pages, emulateapj, accepted for publication in ApJ Letter

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