Suzaku Observations of Hercules X-1: Measurements of the Two Cyclotron Harmonics

Enoto Teruaki; Makishima Kazuo; Terada Yukikatsu; Mihara Tatehiro; Nakazawa Kazuhiro; Ueda Tsuyoshi; Dotani Tadayasu; Kokubun Motohide; Nagase Fumiaki; Naik Sachindra; Suzuki Motoko; Nakajima Motoki; Takahashi Hiromitsu

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Suzaku Observations of Hercules X-1: Measurements of the Two Cyclotron Harmonics

机译：朱雀的大力神X-1观测：两个回旋加速器谐波的测量

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Theaccretion-poweredpulsarHerX-1wasobservedwithSuzakutwiceinitsmain-onstate,on2005October5-6and2006March29-30,foranetexposureof30.5ksand34.4ks,respectively.Inthe2005and2006observations,thesourcewasdetectedatanaverage10-30keVintensityof290mCraband230mCrab,respectively.Theintrinsicpulseperiodwasmeasuredonbothoccasionsat1.23776sbyHXD-PIN,afterbarycentricandbinarycorrections.Thepulsephase-averagedspectraintheenergyrangeabove10keVwerewellfittedbythea€?NegativeandPositivepower-lawtimesEXponentiala€?(NPEX)model,multipliedbyafundamentalcyclotronresonancescatteringfeatureat$$sim$$36keV,whichappearsverysignificantlyintheHXD-PINdata.TheresonanceprofilesweresuccessfullyreproducedbyaLorentzian-typescatteringcrosssection,ratherthanbyaGaussian-typealternative.Thepulsephase-averagedHXD-GSOdata,covering50-120keV,arefeatureless.However,inadifferentialspectrumbetweenthepulse-decayphaseandoff-pulsephase,thesecond-harmoniccyclotronresonancewasdetectedintheGSOdataat$$sim$$73keV,withadepthof1.6$$_{-0.7}^{+0.9}$$.ThismakesHerX-1a6thpulsarwithestablishedsecond-harmonicresonance.Theimplicationsoftheseresultsarebrieflydiscussed.

机译：Theaccretion-poweredpulsarHerX-1wasobservedwithSuzakutwiceinitsmain-开状态，on2005October5-6and2006March29-30，foranetexposureof30.5ksand34.4ks，respectively.Inthe2005and2006observations，thesourcewasdetectedatanaverage10-30keVintensityof290mCraband230mCrab，respectively.Theintrinsicpulseperiodwasmeasuredonbothoccasionsat1.23776sbyHXD-PIN，afterbarycentricandbinarycorrections.Thepulsephase-averagedspectraintheenergyrangeabove10keVwerewellfittedbythea€？NegativeandPositivepower-lawtimesEXponentiala€？（NPEX ）模型，multipliedbyafundamentalcyclotronresonancescatteringfeatureat $$ SIM $$ 36keV，whichappearsverysignificantlyintheHXD-PINdata.TheresonanceprofilesweresuccessfullyreproducedbyaLorentzian-typescatteringcrosssection，ratherthanbyaGaussian-typealternative.Thepulsephase-averagedHXD-GSOdata，covering50-120keV，arefeatureless.However，inadifferentialspectrumbetweenthepulse-decayphaseandoff-pulsephase，thesecond-harmoniccyclotronresonancewasdetectedintheGSOdataat $$ SIM $ $ 73keV，深度为1.6 $$ _ {_-- 0.7} ^ {+ 0。 9} $$。这使HerX-1a6脉冲发生器建立了二次谐波共振。

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《PASJ: Publications of the Astronomical Society of Japan》 |2008年第sp1期|共页
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Enoto Teruaki; Makishima Kazuo; Terada Yukikatsu; Mihara Tatehiro; Nakazawa Kazuhiro; Ueda Tsuyoshi; Dotani Tadayasu; Kokubun Motohide; Nagase Fumiaki; Naik Sachindra; Suzuki Motoko; Nakajima Motoki; Takahashi Hiromitsu;
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1. Suzaku Observations of Hercules X-1:Measurements of the Two Cyclotron Harmonics [J] . Teruaki ENOTO, KazuoMAKISHIMA, YukikatsuTERADA, PASJ: Publications of the Astronomical Society of Japan . 2008,第Suppla1a期

机译：朱雀的大力神X-1观测：两个回旋加速器谐波的测量
2. Suzaku observations of Hercules X-1: Measurements of the two cyclotron harmonics [J] . Enoto T, Makishima K, Terada Y, PASJ: Publications of the Astronomical Society of Japan . 2008,第Suppla1期

机译：朱雀的大力神X-1观测：两个回旋加速器谐波的测量
3. Swift/BAT measurements of the cyclotron line energy decay in the accreting neutron star Hercules X-1: indication of an evolution of the magnetic field? [J] . D. Klochkov, R. Staubert, K. Postnov, Astronomy and astrophysics . 2015,第10期

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4. Suzaku wide-band observation of anomalous dips in Hercules X-l [C] . Kazuhiro Nakazawa, Tsuyoshi Ueda, Teruaki Enoto, Suzaku international conference on energetic cosmos : from Suzaku to ASTRO-H . 2010

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7. Suzaku Observations of Hercules X-1: Measurements of the Two Cyclotron Harmonics [O] . Teruaki Enoto, Kazuo Makishima, Yukikatsu Terada, 2012

机译：朱可拉X-1的朱雀观测：两个回旋加速器谐波的测量

Suzaku Observations of Hercules X-1: Measurements of the Two Cyclotron Harmonics

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