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dc.contributor.authorKay, C.en_US
dc.contributor.authorOpher, M.en_US
dc.contributor.authorKornbleuth, M.en_US
dc.date.accessioned2018-10-15T18:40:16Z
dc.date.available2018-10-15T18:40:16Z
dc.date.issued2016-08-01
dc.identifierhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000381977900095&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=6e74115fe3da270499c3d65c9b17d654
dc.identifier.citationC Kay, M Opher, M Kornbleuth. 2016. "PROBABILITY OF CME IMPACT ON EXOPLANETS ORBITING M DWARFS AND SOLAR-LIKE STARS." ASTROPHYSICAL JOURNAL, v. 826, Issue 2, pp. ? - ? (16). https://doi.org/10.3847/0004-637X/826/2/195
dc.identifier.issn0004-637X
dc.identifier.issn1538-4357
dc.identifier.urihttps://hdl.handle.net/2144/31471
dc.description.abstractSolar coronal mass ejections (CMEs) produce adverse space weather effects at Earth. Planets in the close habitable zone of magnetically active M dwarfs may experience more extreme space weather than at Earth, including frequent CME impacts leading to atmospheric erosion and leaving the surface exposed to extreme flare activity. Similar erosion may occur for hot Jupiters with close orbits around solar-like stars. We have developed a model, Forecasting a CME's Altered Trajectory (ForeCAT), which predicts a CME's deflection. We adapt ForeCAT to simulate CME deflections for the mid-type M dwarf V374 Peg and hot Jupiters with solar-type hosts. V374 Peg's strong magnetic fields can trap CMEs at the M dwarfs's Astrospheric Current Sheet, the location of the minimum in the background magnetic field. Solar-type CMEs behave similarly, but have much smaller deflections and do not get trapped at the Astrospheric Current Sheet. The probability of planetary impact decreases with increasing inclination of the planetary orbit with respect to the Astrospheric Current Sheet - 0.5 to 5 CME impacts per day for M dwarf exoplanets, 0.05 to 0.5 CME impacts per day for solar-type hot Jupiters. We determine the minimum planetary magnetic field necessary to shield a planet's atmosphere from the CME impacts. M dwarf exoplanets require values between tens and hundreds of Gauss. Hot Jupiters around a solar-type star, however, require a more reasonable <30 G. These values exceed the magnitude required to shield a planet from the stellar wind, suggesting CMEs may be the key driver of atmospheric losses.en_US
dc.description.sponsorshipM.O. acknowledges the support of NSF Career Grant ATM-0747654. (ATM-0747654 - NSF Career Grant)en_US
dc.description.urihttp://iopscience.iop.org/article/10.3847/0004-637X/826/2/195/meta
dc.format.extent16 p.en_US
dc.languageEnglish
dc.publisherIOP PUBLISHING LTDen_US
dc.relation.ispartofASTROPHYSICAL JOURNAL
dc.relation.isversionofhttps://doi.org/10.3847/0004-637X/826/2/195
dc.subjectScience & technologyen_US
dc.subjectPhysical sciencesen_US
dc.subjectAstronomy & astrophysicsen_US
dc.subjectCoronal mass ejectionsen_US
dc.subjectActivity-rotation relationshipen_US
dc.subjectEarth-like exoplanetsen_US
dc.subjectMain-sequence starsen_US
dc.subjectDigital sky surveyen_US
dc.subjectMagnetic-fieldsen_US
dc.subjectCool starsen_US
dc.subjectTerrestrial exoplanetsen_US
dc.subjectExtrasolar planeten_US
dc.subjectAstronomical and space sciencesen_US
dc.subjectOrganic chemistryen_US
dc.subjectPhysical chemistryen_US
dc.titleProbability of CME impact on exoplanets orbiting M dwarfs and solar-like starsen_US
dc.typeArticleen_US
dc.description.versionAccepted versionen_US
dc.identifier.doi10.3847/0004-637X/826/2/195
pubs.elements-sourceweb-of-scienceen_US
pubs.notesEmbargo: No embargoen_US
pubs.organisational-groupBoston Universityen_US
pubs.organisational-groupBoston University, College of Arts & Sciencesen_US
pubs.organisational-groupBoston University, College of Arts & Sciences, Department of Astronomyen_US
pubs.publication-statusPublisheden_US


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