Galactic Black-Hole Candidates Shining at the Eddington Luminosity

Watarai Ken-ya; Fukue Jun; Takeuchi Mitsuru; Mineshige Shin

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Galactic Black-Hole Candidates Shining at the Eddington Luminosity

机译：银河系黑洞候选人在爱丁顿光度中闪耀

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WediscussdistinctivefeaturesofluminousaccretiondisksshiningattheEddingtonluminosityinthecontextofgalacticblack-holecandidates(GBCs).Wefirstnotethatthestandard-diskpictureisnotapplicable,althoughitisoftenpostulated.Rather,thediskbecomesadvection-dominatedwhileremainingopticallythick(theso-calledslimdisk).Theslimdiskexhibitsseveralnoteworthysignatures:(1)Thediskluminosityisinsensitivetothemass-flowrates,á1€,andisalwayskeptaroundtheEddingtonluminosity,LE,evenifá1€greatlyexceedsLE/c2.Thisreflectsthefactthatradiativecoolingisnolongerbalancedbyviscousheatingandexcessenergyiscarriedbyaccretingmattertoblackholes.(2)Thespectraoftheslimdisksaremulti-colorblackbodycharacterizedby(i)ahighmaximumtemperature,kTina??afewkeV,(ii)asmallsizeofanemittingregion,rin3rg(withrgbeingSchwarzschildradius),duetosubstantialradiationcomingoutfrominside3rg,and(iii)flatterspectrainthesoft-Xbands,vSva??v0,becauseofaflattereffectivetemperatureprofileoftheslimdisk,Teffa??ra?’1/2(incontrastwithTeffa??ra?’3/4inthestandarddisk).Thus,asmallrin(a‰a3rg)doesnotnecessarilymeanthepresenceofaKerrhole.Furthermore,(3)asá1€increases,Tinincreases,whilerindecreasesasrina??(Tin)a?’1approximately.Thatis,thechangesinrinderivedfromthefittingdonotnecessarilymeanthechangesinthephysicalboundaryoftheopticallythickportionsofthedisk.Observationalimplicationsarediscussedinrelationtobinaryjetsources.

机译：WediscussdistinctivefeaturesofluminousaccretiondisksshiningattheEddingtonluminosityinthecontextofgalacticblack-holecandidates（Genius总线）.Wefirstnotethatthestandard-diskpictureisnotapplicable，althoughitisoftenpostulated.Rather，thediskbecomesadvection-dominatedwhileremainingopticallythick（theso-calledslimdisk）.Theslimdiskexhibitsseveralnoteworthysignatures：（1）Thediskluminosityisinsensitivetothemass-流速，A1€，andisalwayskeptaroundtheEddingtonluminosity，LE，evenifá1€greatlyexceedsLE / c2.Thisreflectsthefactthatradiativecoolingisnolongerbalancedbyviscousheatingandexcessenergyiscarriedbyaccretingmattertoblackholes（2薄盘的光谱是一种多色黑体，其特征在于：（i）最高温度，kTinaΔkefkeV，（ii）较小的发射区域，因3rg的有效温度，从0r到有效范围，随温度变化而变大，由3rg的有效温度变大，由3rg变大，由3的rg变大，由x到0的有效范围，和（iii）平坦/ 2（与Teffa ?? ra？'3/4 inthestan相对darddisk）。因此，asmallrin（一‰A3RG）doesnotnecessarilymeanthepresenceofaKerrhole.Furthermore，（3）ASA1€增大，Tinincreases，whilerindecreasesasrina ??（锡）γ” 1approximately.Thatis，thechangesinrinderivedfromthefittingdonotnecessarilymeanthechangesinthephysicalboundaryoftheopticallythickportionsofthedisk.Observationalimplicationsarediscussedinrelationtobinaryjetsources。

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《PASJ: Publications of the Astronomical Society of Japan》 |2000年第1期|共页
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Watarai Ken-ya; Fukue Jun; Takeuchi Mitsuru; Mineshige Shin;
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2. Correlations Of The Ir Luminosity And Eddington Ratio With A Hard X-ray-selectedsample Of Active Galactic Nuclei [J] . Richard F. Mushotzy, Lisa M. Winter, Daniel H. Mcintosh, The Astrophysical journal . 2008,第2parta2期

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6. STUDIES OF THE GALACTIC CENTER. IV. ON THE TRANSPARENCY OF THE GALACTIC STAR CLOUDS [O] . Harlow Shapley 1929

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7. Galactic Black-Hole Candidates Shining at the Eddington Luminosity [O] . Ken-ya Watarai, Jun Fukue, Mitsuru Takeuchi, 2000

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Galactic Black-Hole Candidates Shining at the Eddington Luminosity

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