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Spectral and timing properties of the accreting X-ray millisecond pulsar IGR J17511-3057

Identifieur interne : 004413 ( PascalFrancis/Curation ); précédent : 004412; suivant : 004414

Spectral and timing properties of the accreting X-ray millisecond pulsar IGR J17511-3057

Auteurs : M. Falanga [Suisse] ; L. Kuiper [Pays-Bas] ; J. Poutanen [Finlande] ; D. K. Galloway [Australie] ; E. W. Bonning [États-Unis] ; E. Bozzo [Suisse] ; A. Goldwurm [France] ; W. Hermsen [Pays-Bas] ; L. Stella [Italie]

Source :

RBID : Pascal:11-0310959

Descripteurs français

English descriptors

Abstract

Context. IGR J17511-3057 is the second X-ray transient accreting millisecond pulsar discovered by INTEGRAL. It was in outburst for about a month beginning on September 13, 2009. Aims. We analyze the spectral and timing properties of the object and the characteristics of X-ray bursts with the aim to constrain the physical processes responsible for the X-ray production in this class of sources. Methods. We studied the broad-band spectrum of the persistent emission in the 0.8-300 keV energy band using simultaneous INTEGRAL, RXTE and Swift data obtained in September 2009. We also describe the timing properties in the 2-120 keV energy range such as the outburst light curve, pulse profile, pulsed fraction, pulsed emission, and time lags, and moreover study the properties of X-ray bursts discovered by RXTE and INTEGRAL and the recurrence time. Results. The broad-band average spectrum is well described by thermal Comptonization with an electron temperature of kTe ∼ 25 keV, soft seed photons of kTbb ∼ 0.6 keV, and Thomson optical depth τT ∼ 2 in a slab geometry. During the outburst the spectrum stays remarkably stable with plasma and soft seed photon temperatures and scattering optical depth being constant within errors. We fitted the outburst profile with the exponential model, and using the disk instability model we inferred the outer disk radius to be (4.8-5.4) x 1010 cm. The INTEGRAL and RXTE data reveal the X-ray pulsation at a period of 4.08 milliseconds up to ∼120 keV. The pulsed fraction is shown to decrease from ∼22% at 3 keV to a constant pulsed fraction of ∼17-18% between 7-30 keV, and then to decrease again to ∼13% at 60 keV. The nearly sinusoidal pulses show soft lags that monotonically increase with energy to about 0.2 ms at 10-20 keV similar to those observed in other accreting pulsars. The short burst profiles indicate hydrogen-poor material at ignition, which suggests either that the accreted material is hydrogen-deficient, or that the CNO metallicity is up to a factor of 2 times solar. However, the variation of the burst recurrence time as a function of m (inferred from the X-ray flux) is much smaller than predicted by helium-ignition models.
pA  
A01 01  1    @0 0004-6361
A02 01      @0 AAEJAF
A03   1    @0 Astron. astrophys. : (Berl., Print)
A05       @2 529
A06       @3 p. 1
A08 01  1  ENG  @1 Spectral and timing properties of the accreting X-ray millisecond pulsar IGR J17511-3057
A11 01  1    @1 FALANGA (M.)
A11 02  1    @1 KUIPER (L.)
A11 03  1    @1 POUTANEN (J.)
A11 04  1    @1 GALLOWAY (D. K.)
A11 05  1    @1 BONNING (E. W.)
A11 06  1    @1 BOZZO (E.)
A11 07  1    @1 GOLDWURM (A.)
A11 08  1    @1 HERMSEN (W.)
A11 09  1    @1 STELLA (L.)
A14 01      @1 International Space Science Institute (ISSI), Hallerstrasse 6 @2 3012 Bern @3 CHE @Z 1 aut.
A14 02      @1 SRON - Netherlands Institute for Space Research, Sorbonnelaan 2 @2 3584 CA, Utrecht @3 NLD @Z 2 aut. @Z 8 aut.
A14 03      @1 Astronomy Division, Department of Physics, PO Box 3000, 90014 University of Oulu @3 FIN @Z 3 aut.
A14 04      @1 School of Physics and School of Mathematical Sciences, Monash University @2 VIC 3800 @3 AUS @Z 4 aut.
A14 05      @1 Department of Physics and Yale Center for Astronomy and Astrophysics, Yale University, PO Box 208121 @2 New Haven, CT 06520-8121 @3 USA @Z 5 aut.
A14 06      @1 ISDC, Data centre for astrophysics, University of Geneva, Chemin d'Écogia 16 @2 1290 Versoix @3 CHE @Z 6 aut.
A14 07      @1 Service dAstrophysique (SAp), IRFU/DSM/CEA-Saclay @2 91191 Gif-sur-Yvette @3 FRA @Z 7 aut.
A14 08      @1 Unité mixte de recherche Astroparticule et Cosmologie, 10 rue Alice Domon et Leonie Duquet @2 75205 Paris @3 FRA @Z 7 aut.
A14 09      @1 Astronomical Institute "Anton Pannekoek", University of Amsterdam, Science Park 904 @2 1098 XH, Amsterdam @3 NLD @Z 8 aut.
A14 10      @1 INAF - Osservatorio Astronomico di Roma, via Frascati 33, 00040 Monteporzio Catone @2 Roma @3 ITA @Z 9 aut.
A20       @2 529A68.1-529A68.11
A21       @1 2011
A23 01      @0 ENG
A43 01      @1 INIST @2 14176 @5 354000189922800640
A44       @0 0000 @1 © 2011 INIST-CNRS. All rights reserved.
A45       @0 3/4 p.
A47 01  1    @0 11-0310959
A60       @1 P
A61       @0 A
A64 01  1    @0 Astronomy and astrophysics : (Berlin. Print)
A66 01      @0 FRA
C01 01    ENG  @0 Context. IGR J17511-3057 is the second X-ray transient accreting millisecond pulsar discovered by INTEGRAL. It was in outburst for about a month beginning on September 13, 2009. Aims. We analyze the spectral and timing properties of the object and the characteristics of X-ray bursts with the aim to constrain the physical processes responsible for the X-ray production in this class of sources. Methods. We studied the broad-band spectrum of the persistent emission in the 0.8-300 keV energy band using simultaneous INTEGRAL, RXTE and Swift data obtained in September 2009. We also describe the timing properties in the 2-120 keV energy range such as the outburst light curve, pulse profile, pulsed fraction, pulsed emission, and time lags, and moreover study the properties of X-ray bursts discovered by RXTE and INTEGRAL and the recurrence time. Results. The broad-band average spectrum is well described by thermal Comptonization with an electron temperature of kTe ∼ 25 keV, soft seed photons of kTbb ∼ 0.6 keV, and Thomson optical depth τT ∼ 2 in a slab geometry. During the outburst the spectrum stays remarkably stable with plasma and soft seed photon temperatures and scattering optical depth being constant within errors. We fitted the outburst profile with the exponential model, and using the disk instability model we inferred the outer disk radius to be (4.8-5.4) x 1010 cm. The INTEGRAL and RXTE data reveal the X-ray pulsation at a period of 4.08 milliseconds up to ∼120 keV. The pulsed fraction is shown to decrease from ∼22% at 3 keV to a constant pulsed fraction of ∼17-18% between 7-30 keV, and then to decrease again to ∼13% at 60 keV. The nearly sinusoidal pulses show soft lags that monotonically increase with energy to about 0.2 ms at 10-20 keV similar to those observed in other accreting pulsars. The short burst profiles indicate hydrogen-poor material at ignition, which suggests either that the accreted material is hydrogen-deficient, or that the CNO metallicity is up to a factor of 2 times solar. However, the variation of the burst recurrence time as a function of m (inferred from the X-ray flux) is much smaller than predicted by helium-ignition models.
C02 01  3    @0 001E03
C03 01  X  FRE  @0 Propriété spectrale @5 26
C03 01  X  ENG  @0 Spectral properties @5 26
C03 01  X  SPA  @0 Propiedad espectral @5 26
C03 02  3  FRE  @0 Timing @5 27
C03 02  3  ENG  @0 Timing @5 27
C03 03  X  FRE  @0 Pulsar RX @5 28
C03 03  X  ENG  @0 X ray pulsar @5 28
C03 03  X  SPA  @0 Pulsar RX @5 28
C03 04  X  FRE  @0 Source RX transitoire @5 29
C03 04  X  ENG  @0 Transient X ray source @5 29
C03 04  X  SPA  @0 Fuente RX transitoria @5 29
C03 05  X  FRE  @0 Pulsar milliseconde @5 30
C03 05  X  ENG  @0 Millisecond pulsar @5 30
C03 05  X  SPA  @0 Pulsar milisegundo @5 30
C03 06  X  FRE  @0 Sursaut RX @5 31
C03 06  X  ENG  @0 X ray burst @5 31
C03 06  X  SPA  @0 Arrebato RX @5 31
C03 07  3  FRE  @0 Domaine énergie keV @5 32
C03 07  3  ENG  @0 keV range @5 32
C03 08  3  FRE  @0 Courbe lumière @5 33
C03 08  3  ENG  @0 Light curves @5 33
C03 09  X  FRE  @0 Forme impulsion @5 34
C03 09  X  ENG  @0 Pulse shape @5 34
C03 09  X  SPA  @0 Forma impulsión @5 34
C03 10  3  FRE  @0 Température électron @5 35
C03 10  3  ENG  @0 Electron temperature @5 35
C03 11  X  FRE  @0 Epaisseur optique @5 36
C03 11  X  ENG  @0 Optical thickness @5 36
C03 11  X  SPA  @0 Espesor óptico @5 36
C03 12  3  FRE  @0 Plasma @5 37
C03 12  3  ENG  @0 Plasma @5 37
C03 13  3  FRE  @0 Température photon @5 38
C03 13  3  ENG  @0 Photon temperature @5 38
C03 14  X  FRE  @0 Diffusion optique @5 39
C03 14  X  ENG  @0 Optical scattering @5 39
C03 14  X  SPA  @0 Difusión óptica @5 39
C03 15  X  FRE  @0 Modèle @5 40
C03 15  X  ENG  @0 Models @5 40
C03 15  X  SPA  @0 Modelo @5 40
C03 16  3  FRE  @0 Instabilité @5 41
C03 16  3  ENG  @0 Instability @5 41
C03 17  X  FRE  @0 Pulsation RX @5 42
C03 17  X  ENG  @0 X ray pulsation @5 42
C03 17  X  SPA  @0 Pulsación rayos X @5 42
C03 18  X  FRE  @0 Métallicité @5 43
C03 18  X  ENG  @0 Metallicity @5 43
C03 18  X  SPA  @0 Metalicidad @5 43
C03 19  3  FRE  @0 Etoile neutron @5 44
C03 19  3  ENG  @0 Neutron stars @5 44
C03 20  3  FRE  @0 Binaire RX @5 45
C03 20  3  ENG  @0 X-ray binary stars @5 45
C03 21  X  FRE  @0 Source RX binaire @5 46
C03 21  X  ENG  @0 Binary X ray source @5 46
C03 21  X  SPA  @0 Fuente RX binaria @5 46
C03 22  3  FRE  @0 Source RX cosmique @5 47
C03 22  3  ENG  @0 Cosmic x-ray sources @5 47
N21       @1 213
N44 01      @1 OTO
N82       @1 OTO

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<term>Timing</term>
<term>Pulsar RX</term>
<term>Source RX transitoire</term>
<term>Pulsar milliseconde</term>
<term>Sursaut RX</term>
<term>Domaine énergie keV</term>
<term>Courbe lumière</term>
<term>Forme impulsion</term>
<term>Température électron</term>
<term>Epaisseur optique</term>
<term>Plasma</term>
<term>Température photon</term>
<term>Diffusion optique</term>
<term>Modèle</term>
<term>Instabilité</term>
<term>Pulsation RX</term>
<term>Métallicité</term>
<term>Etoile neutron</term>
<term>Binaire RX</term>
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<front>
<div type="abstract" xml:lang="en">Context. IGR J17511-3057 is the second X-ray transient accreting millisecond pulsar discovered by INTEGRAL. It was in outburst for about a month beginning on September 13, 2009. Aims. We analyze the spectral and timing properties of the object and the characteristics of X-ray bursts with the aim to constrain the physical processes responsible for the X-ray production in this class of sources. Methods. We studied the broad-band spectrum of the persistent emission in the 0.8-300 keV energy band using simultaneous INTEGRAL, RXTE and Swift data obtained in September 2009. We also describe the timing properties in the 2-120 keV energy range such as the outburst light curve, pulse profile, pulsed fraction, pulsed emission, and time lags, and moreover study the properties of X-ray bursts discovered by RXTE and INTEGRAL and the recurrence time. Results. The broad-band average spectrum is well described by thermal Comptonization with an electron temperature of kT
<sub>e</sub>
∼ 25 keV, soft seed photons of kT
<sub>bb</sub>
∼ 0.6 keV, and Thomson optical depth τ
<sub>T</sub>
∼ 2 in a slab geometry. During the outburst the spectrum stays remarkably stable with plasma and soft seed photon temperatures and scattering optical depth being constant within errors. We fitted the outburst profile with the exponential model, and using the disk instability model we inferred the outer disk radius to be (4.8-5.4) x 10
<sup>10</sup>
cm. The INTEGRAL and RXTE data reveal the X-ray pulsation at a period of 4.08 milliseconds up to ∼120 keV. The pulsed fraction is shown to decrease from ∼22% at 3 keV to a constant pulsed fraction of ∼17-18% between 7-30 keV, and then to decrease again to ∼13% at 60 keV. The nearly sinusoidal pulses show soft lags that monotonically increase with energy to about 0.2 ms at 10-20 keV similar to those observed in other accreting pulsars. The short burst profiles indicate hydrogen-poor material at ignition, which suggests either that the accreted material is hydrogen-deficient, or that the CNO metallicity is up to a factor of 2 times solar. However, the variation of the burst recurrence time as a function of m (inferred from the X-ray flux) is much smaller than predicted by helium-ignition models.</div>
</front>
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<s1>STELLA (L.)</s1>
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<s1>International Space Science Institute (ISSI), Hallerstrasse 6</s1>
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<sZ>1 aut.</sZ>
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<s1>SRON - Netherlands Institute for Space Research, Sorbonnelaan 2</s1>
<s2>3584 CA, Utrecht</s2>
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<sZ>2 aut.</sZ>
<sZ>8 aut.</sZ>
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<fA14 i1="03">
<s1>Astronomy Division, Department of Physics, PO Box 3000, 90014 University of Oulu</s1>
<s3>FIN</s3>
<sZ>3 aut.</sZ>
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<fA14 i1="04">
<s1>School of Physics and School of Mathematical Sciences, Monash University</s1>
<s2>VIC 3800</s2>
<s3>AUS</s3>
<sZ>4 aut.</sZ>
</fA14>
<fA14 i1="05">
<s1>Department of Physics and Yale Center for Astronomy and Astrophysics, Yale University, PO Box 208121</s1>
<s2>New Haven, CT 06520-8121</s2>
<s3>USA</s3>
<sZ>5 aut.</sZ>
</fA14>
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<s1>ISDC, Data centre for astrophysics, University of Geneva, Chemin d'Écogia 16</s1>
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<s3>CHE</s3>
<sZ>6 aut.</sZ>
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<s3>FRA</s3>
<sZ>7 aut.</sZ>
</fA14>
<fA14 i1="08">
<s1>Unité mixte de recherche Astroparticule et Cosmologie, 10 rue Alice Domon et Leonie Duquet</s1>
<s2>75205 Paris</s2>
<s3>FRA</s3>
<sZ>7 aut.</sZ>
</fA14>
<fA14 i1="09">
<s1>Astronomical Institute "Anton Pannekoek", University of Amsterdam, Science Park 904</s1>
<s2>1098 XH, Amsterdam</s2>
<s3>NLD</s3>
<sZ>8 aut.</sZ>
</fA14>
<fA14 i1="10">
<s1>INAF - Osservatorio Astronomico di Roma, via Frascati 33, 00040 Monteporzio Catone</s1>
<s2>Roma</s2>
<s3>ITA</s3>
<sZ>9 aut.</sZ>
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<fA20>
<s2>529A68.1-529A68.11</s2>
</fA20>
<fA21>
<s1>2011</s1>
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<fA23 i1="01">
<s0>ENG</s0>
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<fA43 i1="01">
<s1>INIST</s1>
<s2>14176</s2>
<s5>354000189922800640</s5>
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<fA44>
<s0>0000</s0>
<s1>© 2011 INIST-CNRS. All rights reserved.</s1>
</fA44>
<fA45>
<s0>3/4 p.</s0>
</fA45>
<fA47 i1="01" i2="1">
<s0>11-0310959</s0>
</fA47>
<fA60>
<s1>P</s1>
</fA60>
<fA61>
<s0>A</s0>
</fA61>
<fA64 i1="01" i2="1">
<s0>Astronomy and astrophysics : (Berlin. Print)</s0>
</fA64>
<fA66 i1="01">
<s0>FRA</s0>
</fA66>
<fC01 i1="01" l="ENG">
<s0>Context. IGR J17511-3057 is the second X-ray transient accreting millisecond pulsar discovered by INTEGRAL. It was in outburst for about a month beginning on September 13, 2009. Aims. We analyze the spectral and timing properties of the object and the characteristics of X-ray bursts with the aim to constrain the physical processes responsible for the X-ray production in this class of sources. Methods. We studied the broad-band spectrum of the persistent emission in the 0.8-300 keV energy band using simultaneous INTEGRAL, RXTE and Swift data obtained in September 2009. We also describe the timing properties in the 2-120 keV energy range such as the outburst light curve, pulse profile, pulsed fraction, pulsed emission, and time lags, and moreover study the properties of X-ray bursts discovered by RXTE and INTEGRAL and the recurrence time. Results. The broad-band average spectrum is well described by thermal Comptonization with an electron temperature of kT
<sub>e</sub>
∼ 25 keV, soft seed photons of kT
<sub>bb</sub>
∼ 0.6 keV, and Thomson optical depth τ
<sub>T</sub>
∼ 2 in a slab geometry. During the outburst the spectrum stays remarkably stable with plasma and soft seed photon temperatures and scattering optical depth being constant within errors. We fitted the outburst profile with the exponential model, and using the disk instability model we inferred the outer disk radius to be (4.8-5.4) x 10
<sup>10</sup>
cm. The INTEGRAL and RXTE data reveal the X-ray pulsation at a period of 4.08 milliseconds up to ∼120 keV. The pulsed fraction is shown to decrease from ∼22% at 3 keV to a constant pulsed fraction of ∼17-18% between 7-30 keV, and then to decrease again to ∼13% at 60 keV. The nearly sinusoidal pulses show soft lags that monotonically increase with energy to about 0.2 ms at 10-20 keV similar to those observed in other accreting pulsars. The short burst profiles indicate hydrogen-poor material at ignition, which suggests either that the accreted material is hydrogen-deficient, or that the CNO metallicity is up to a factor of 2 times solar. However, the variation of the burst recurrence time as a function of m (inferred from the X-ray flux) is much smaller than predicted by helium-ignition models.</s0>
</fC01>
<fC02 i1="01" i2="3">
<s0>001E03</s0>
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<s0>Propriété spectrale</s0>
<s5>26</s5>
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<fC03 i1="01" i2="X" l="ENG">
<s0>Spectral properties</s0>
<s5>26</s5>
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<s5>26</s5>
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<fC03 i1="02" i2="3" l="FRE">
<s0>Timing</s0>
<s5>27</s5>
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<fC03 i1="02" i2="3" l="ENG">
<s0>Timing</s0>
<s5>27</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE">
<s0>Pulsar RX</s0>
<s5>28</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG">
<s0>X ray pulsar</s0>
<s5>28</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA">
<s0>Pulsar RX</s0>
<s5>28</s5>
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<fC03 i1="04" i2="X" l="FRE">
<s0>Source RX transitoire</s0>
<s5>29</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG">
<s0>Transient X ray source</s0>
<s5>29</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA">
<s0>Fuente RX transitoria</s0>
<s5>29</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE">
<s0>Pulsar milliseconde</s0>
<s5>30</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG">
<s0>Millisecond pulsar</s0>
<s5>30</s5>
</fC03>
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<s0>Pulsar milisegundo</s0>
<s5>30</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE">
<s0>Sursaut RX</s0>
<s5>31</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG">
<s0>X ray burst</s0>
<s5>31</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA">
<s0>Arrebato RX</s0>
<s5>31</s5>
</fC03>
<fC03 i1="07" i2="3" l="FRE">
<s0>Domaine énergie keV</s0>
<s5>32</s5>
</fC03>
<fC03 i1="07" i2="3" l="ENG">
<s0>keV range</s0>
<s5>32</s5>
</fC03>
<fC03 i1="08" i2="3" l="FRE">
<s0>Courbe lumière</s0>
<s5>33</s5>
</fC03>
<fC03 i1="08" i2="3" l="ENG">
<s0>Light curves</s0>
<s5>33</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE">
<s0>Forme impulsion</s0>
<s5>34</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG">
<s0>Pulse shape</s0>
<s5>34</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA">
<s0>Forma impulsión</s0>
<s5>34</s5>
</fC03>
<fC03 i1="10" i2="3" l="FRE">
<s0>Température électron</s0>
<s5>35</s5>
</fC03>
<fC03 i1="10" i2="3" l="ENG">
<s0>Electron temperature</s0>
<s5>35</s5>
</fC03>
<fC03 i1="11" i2="X" l="FRE">
<s0>Epaisseur optique</s0>
<s5>36</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG">
<s0>Optical thickness</s0>
<s5>36</s5>
</fC03>
<fC03 i1="11" i2="X" l="SPA">
<s0>Espesor óptico</s0>
<s5>36</s5>
</fC03>
<fC03 i1="12" i2="3" l="FRE">
<s0>Plasma</s0>
<s5>37</s5>
</fC03>
<fC03 i1="12" i2="3" l="ENG">
<s0>Plasma</s0>
<s5>37</s5>
</fC03>
<fC03 i1="13" i2="3" l="FRE">
<s0>Température photon</s0>
<s5>38</s5>
</fC03>
<fC03 i1="13" i2="3" l="ENG">
<s0>Photon temperature</s0>
<s5>38</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE">
<s0>Diffusion optique</s0>
<s5>39</s5>
</fC03>
<fC03 i1="14" i2="X" l="ENG">
<s0>Optical scattering</s0>
<s5>39</s5>
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<fC03 i1="14" i2="X" l="SPA">
<s0>Difusión óptica</s0>
<s5>39</s5>
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<fC03 i1="15" i2="X" l="FRE">
<s0>Modèle</s0>
<s5>40</s5>
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<s0>Models</s0>
<s5>40</s5>
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<s0>Modelo</s0>
<s5>40</s5>
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<s5>41</s5>
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<s0>Instability</s0>
<s5>41</s5>
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<s5>42</s5>
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<s0>X ray pulsation</s0>
<s5>42</s5>
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<s5>42</s5>
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<s5>43</s5>
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<fC03 i1="18" i2="X" l="ENG">
<s0>Metallicity</s0>
<s5>43</s5>
</fC03>
<fC03 i1="18" i2="X" l="SPA">
<s0>Metalicidad</s0>
<s5>43</s5>
</fC03>
<fC03 i1="19" i2="3" l="FRE">
<s0>Etoile neutron</s0>
<s5>44</s5>
</fC03>
<fC03 i1="19" i2="3" l="ENG">
<s0>Neutron stars</s0>
<s5>44</s5>
</fC03>
<fC03 i1="20" i2="3" l="FRE">
<s0>Binaire RX</s0>
<s5>45</s5>
</fC03>
<fC03 i1="20" i2="3" l="ENG">
<s0>X-ray binary stars</s0>
<s5>45</s5>
</fC03>
<fC03 i1="21" i2="X" l="FRE">
<s0>Source RX binaire</s0>
<s5>46</s5>
</fC03>
<fC03 i1="21" i2="X" l="ENG">
<s0>Binary X ray source</s0>
<s5>46</s5>
</fC03>
<fC03 i1="21" i2="X" l="SPA">
<s0>Fuente RX binaria</s0>
<s5>46</s5>
</fC03>
<fC03 i1="22" i2="3" l="FRE">
<s0>Source RX cosmique</s0>
<s5>47</s5>
</fC03>
<fC03 i1="22" i2="3" l="ENG">
<s0>Cosmic x-ray sources</s0>
<s5>47</s5>
</fC03>
<fN21>
<s1>213</s1>
</fN21>
<fN44 i1="01">
<s1>OTO</s1>
</fN44>
<fN82>
<s1>OTO</s1>
</fN82>
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