Sunspots and starspots PDF
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This page intentionally left blank SUNSPOTS AND STARSPOTS Thepasttwodecadeshaveseenremarkableadvancesinobservationsofsunspotsandtheirmag- neticfields,inimagingofspotsandfieldsondistantstars,andinassociatedtheoreticalmodels andnumericalsimulations. Thisvolumeprovidesthefirstcomprehensivecombinedaccountofthepropertiesofsunspots and starspots. It covers both observations and theory, and describes the intricate fine structure of a sunspot’s magnetic field and the prevalence of polar spots on stars. The book includes a substantialhistoricalintroductionandtreatssolarandstellarmagneticactivity,dynamomodelsof magneticcycles,andtheinfluenceofsolarvariabilityontheEarth’smagnetosphereandclimate. This book conveys the excitement of its subject to graduate students and specialists in solar andstellarphysics,andmorebroadlytoastronomers,geophysicists,spacephysicistsandexperts influiddynamicsandplasmaphysics. JOHN H.THOMAS isProfessorofMechanicalandAerospaceSciences,andAstronomy,at theUniversityofRochester.HehasbeentheChairoftheSolarPhysicsDivisionoftheAmerican AstronomicalSociety,andwasaScientificEditoroftheAstrophysicalJournalfortenyears. NIGEL O.WEISS is Emeritus Professor of Mathematical Astrophysics at the University ofCambridge.HeisaformerPresidentoftheRoyalAstronomicalSociety,whichawardedhim aGoldMedalin2007. CambridgeAstrophysicsSeries Serieseditors AndrewKing,DouglasLin,StephenMaran,JimPringleandMartinWard Titlesavailableinthisseries 10. QuasarAstronomy byD.W.Weedman 18. PlasmaLoopsintheSolarCorona byR.J.Bray,L.E.Cram,C.DurrantandR.E.Loughhead 19. BeamsandJetsinAstrophysics editedbyP.A.Hughes 22. Gamma-rayAstronomy2ndEdition byP.V.RamanaMurthyandA.W.Wolfendale 24. SolarandStellarActivityCycles byPeterR.Wilson 25. 3K:TheCosmicMicrowaveBackgroundRadiation byR.B.Partridge 26. X-rayBinaries editedbyWalterH.G.Lewin,JanvanParadijsandEdwardP.J.vandenHeuvel 27. RRLyraeStars byHoraceA.Smith 28. CataclysmicVariableStars byBrianWarner 29. TheMagellanicClouds byBengtE.Westerlund 30. GlobularClusterSystems byKeithM.AshmanandStephenE.Zepf 32. AccretionProcessesinStarFormation byLeeHartmann 33. TheOriginandEvolutionofPlanetaryNebulae bySunKwok 34. SolarandStellarMagneticActivity byCarolusJ.SchrijverandCorneliusZwaan 35. TheGalaxiesoftheLocalGroup bySidneyvandenBergh 36. StellarRotation byJean-LouisTassoul 37. ExtremeUltravioletAstronomy byMartinA.BarstowandJayB.Holberg 38. PulsarAstronomy3rdEdition byAndrewG.LyneandFrancisGraham-Smith 39. CompactStellarX-raySources editedbyWalterLewinandMichielvanderKlis 40. EvolutionaryProcessesinBinaryandMultipleStars byPeterEggleton 41. ThePhysicsoftheCosmicMicrowaveBackground byPavelD.Naselsky,DmitryI.NovikovandIgorD.Novikov 42. MolecularCollisionsintheInterstellarMedium2ndEdition byDavidFlower 43. ClassicalNovae2ndEdition editedbyMichaelBodeandAneurinEvans 44. UltravioletandX-raySpectroscopyoftheSolarAtmosphere byKennethJ.H.Phillips,UriFeldmanandEnricoLandi 45. FromLuminousHotStarstoStarburstGalaxies byPeterS.Conti,PaulCrowtherandClausLeitherer 46. SunspotsandStarspots byJohnH.ThomasandNigelO.Weiss High-resolution image of a sunspot, showing the dark umbra enclosed by a filamentary penumbra, as well as tiny bright points in the surrounding granulation. This image was obtained in the continuum near 436 nm with the Swedish Solar Telescope on La Palma. (CourtesyofL.H.M.RouppevanderVoortandtheRoyalSwedishAcademyofSciences.) SUNSPOTS AND STARSPOTS JOHN H. THOMAS DepartmentofMechanicalEngineeringandDepartmentofPhysics andAstronomy,UniversityofRochester,USA NIGEL O. WEISS DepartmentofAppliedMathematicsandTheoreticalPhysics, UniversityofCambridge,UK CAMBRIDGE UNIVERSITY PRESS Cambridge, New York, Melbourne, Madrid, Cape Town, Singapore, São Paulo Cambridge University Press The Edinburgh Building, Cambridge CB2 8RU, UK Published in the United States of America by Cambridge University Press, New York www.cambridge.org Information on this title: www.cambridge.org/9780521860031 ©J. H. Thomas and N. O. Weiss 2008 This publication is in copyright. Subject to statutory exception and to the provision of relevant collective licensing agreements, no reproduction of any part may take place without the written permission of Cambridge University Press. First published in print format 2008 ISBN-13 978-0-511-45562-9 eBook (EBL) ISBN-13 978-0-521-86003-1 hardback Cambridge University Press has no responsibility for the persistence or accuracy of urls for external or third-party internet websites referred to in this publication, and does not guarantee that any content on such websites is, or will remain, accurate or appropriate. ToLoisandJudy
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