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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Luminosity Dependence of the Electron Temperature in the Bright Hard State of the Black Hole Candidate GX 339a€“4
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Luminosity Dependence of the Electron Temperature in the Bright Hard State of the Black Hole Candidate GX 339a€“4

机译:黑洞候选GX 339a€4的亮硬状态下电子温度的光度依赖性

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Wehaveanalyzed200RossiX-rayTimingExplorerobservationsoftheblackholecandidateGX339$$-$$4,allfrombrighthardstateperiodsbetween1996and2005.ThepurposeofourstudyistoinvestigatetheradiationmechanismsinthehardstateofGX339$$-$$4.Thebroadband3-200keVspectraweresuccessfullymodeledbyasimpleanalyticmodel,power-lawwithanexponentialcut-offmodifiedwithasmearededge.Theobtainedenergycut-off($$E_{ m{cut}}$$)wasdistributedover50-200keV,andthephotonindexover1.4-1.7.Wefoundaclearanti-correlation($$E_{ m{cut}}proptoL^{-0.70pm0.06}$$)betweentheX-rayluminosity($$L$$)in2-200keVand$$E_{ m{cut}}$$,when$$L$$islargerthan$$7 imes10^{37}$$ergs$$^{-1}$$(assumingadistanceof8kpc),while$$E_{ m{cut}}$$isroughlyconstantataround200keVwhen$$L$$issmallerthan$$7 imes10^{37}$$ergs$$^{-1}$$.Thisanti-correlationremainedunchangedbyadoptingamorephysicalthermalComptonizationmodel,whichresultedinananti-correlationthatcanbeexpressedas$$kT_{ m{e}}proptoL^{-0.24pm0.06}$$.Theseanti-correlationscanbequantitativelyexplainedbyapictureinwhichtheenergy-flowratefromprotonstoelectronsbalanceswithinverseComptoncooling.
机译:Wehaveanalyzed200RossiX-rayTimingExplorerobservationsoftheblackholecandidateGX339 $$ - $$ 4,allfrombrighthardstateperiodsbetween1996and2005.ThepurposeofourstudyistoinvestigatetheradiationmechanismsinthehardstateofGX339 $$ - $$ 4.Thebroadband3-200keVspectraweresuccessfullymodeledbyasimpleanalyticmodel,功率lawwithanexponentialcut-offmodifiedwithasmearededge.Theobtainedenergycut关闭($$ E_ {M {切}} $$)wasdistributedover50-200keV,andthephotonindexover1。 4-1.7。我们在2-200keV和$ E_ {m {cut} } $$,当$$ L $$大于$$ 7 imes10 ^ {37} $$ ergs $$ ^ {-1} $$(假设8kpc的假设),而$$ E_ {m {cut}} $$大约等于200keV时,$$ L $$的值小于$$ imes10 ^ {37} $$ ergs $$ ^ {-1} $$。此反相关通过采用更多物理热压缩模型而保持不变,其结果是可以表示为$$ kT_ {m {e}} proptoL ^ {-0.24pm0.06 $}这些反相关可以适当地解释数据库图片质子与电子的平衡在逆康普顿冷却的情况下产生的能量流量。

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