doppler tomography of accretion in binaries（多普勒断层吸积的二进制文件）

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1、Astron.Nachr./AN325,No.0,000–000(2004)/DOI10.1002/asna.20041XXXXDopplerTomographyofaccretioninbinariesD.STEEGHSHarvard-SmithsonianCenterforAstrophysicsReceiveddate;accepteddate;publishedonlinedateAbstract.Sinceitsconception,Dopplertomographyhasmaturedintoaversatileandwidelyu

2、sedtool.Itexploitstheinformationcontainedinthehighly-structuredspectralline-profilestypicallyobservedinmass-transferringbinaries.Usinginversiontechniquesakintomedicalimaging,itpermitsthereconstructionofDopplermapsthatimagetheaccretionflowonmicro-arcsecondscales.Isummarisetheba

3、sicconceptsbehindthetechniqueandhighlighttworecentresults;theuseofdonorstaremissionasameanstosystemparameterdetermination,andthereal-timemoviesoftheevolvingaccretionflowinthecataclysmicvariableWZSgeduringits2001outburst.IconcludewithfutureopportunitiesinDopplertomographybyexp

4、loitingthecombinationofsuperiordatasets,secondgenerationreconstructioncodesandsimulatedtheoreticaltomogramstodelvedeeperintothephysicsofaccretionflows.Keywords:accretion,accretiondiscs–line:profiles–techniques:spectroscopic–binaries:closec2004WILEY-VCHVerlagGmbH&Co.KGaA,Weinhe

5、im1.Introductionbinary(Marsh&Horne1988).Itwasrecognizedthattheob-servedlineprofilesateachorbitalphaseprovideaprojec-Thedetectionofbroadandstrongemissionlinesisoneofthetionoftheaccretionflowalongthelineofsight.Givensuffi-hallmarksofanaccretingsystem.Theluminoussupersoniccientobs

6、ervedprojections,theseprofilescanthenbeinvertedaccretionflowsincataclysmicvariables(CVs)andX-raybi-intoa2Dimage,verymuchliketheCAT-scanningproce-naries(XRBs)leadtocomplexandhighlytime-dependentduresusedinmedicalimaging.AnexcellentrecentreviewarXiv:astro-ph/0312170v15Dec2003lin

7、eprofilesacrosstheelectromagneticspectrum.Theinter-ofDopplertomographycanbefoundinMarsh(2001).ThispretationofsuchbroadlinesinthespectrumoftheCVAEconcisereviewsummarisesthekeyingredientsofDopplerto-AqrasduetoDopplermotionsinabinarysystem(Craw-mographyandfocusesonfutureopportun

8、itiesforextendingford&Kraft1956)formedthefoundationforthedevelop-Dopplermap