A relativistically broadened iron line from an Accreting Millisecond Pulsar

Tiziana Di Salvo, Rosario Iaria, Antonino D'Ai', Burderi, Menna, Papitto, Riggio

Risultato della ricerca: Chapter

Abstract

The capabilities of XMM-Newton have been fully exploited to detect a broadened iron Kα emission line from the 2.5 ms Accreting Millisecond Pulsar, SAX J1808.4-3658. The energy of the transition is compatible with fluorescence from neutral/lowly ionized iron. The observed large width (FWHM more than 1 keV) can be explained through Doppler and relativistic broadening from the inner rings of an accretion disc close to the NS. From a fit of the line shape with a diskline model we obtain an estimate of the inner disc radius of 18.0-5.6+7.6km for a 1.4 M⊙ neutron star. The disc is therefore truncated inside the corotation radius (31 km for SAX J1808.4-3658), in agreement with the observation of coherent pulsations. From our estimate of the inner disc radius, we infer that the magnetic field of the neutron star is in the range 1-5×108G. © 2010 American Institute of Physics.
Lingua originaleEnglish
Titolo della pubblicazione ospiteX-RAY ASTRONOMY-2009: PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES
Pagine77-80
Numero di pagine4
Volume1248
Stato di pubblicazionePublished - 2010

Serie di pubblicazioni

NomeAIP CONFERENCE PROCEEDINGS

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pulsars
iron
neutron stars
radii
corotation
M stars
XMM-Newton telescope
estimates
accretion disks
newton
line shape
fluorescence
rings
magnetic fields
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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Di Salvo, T., Iaria, R., D'Ai', A., Burderi, Menna, Papitto, & Riggio (2010). A relativistically broadened iron line from an Accreting Millisecond Pulsar. In X-RAY ASTRONOMY-2009: PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES (Vol. 1248, pagg. 77-80). (AIP CONFERENCE PROCEEDINGS).

A relativistically broadened iron line from an Accreting Millisecond Pulsar. / Di Salvo, Tiziana; Iaria, Rosario; D'Ai', Antonino; Burderi; Menna; Papitto; Riggio.

X-RAY ASTRONOMY-2009: PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES. Vol. 1248 2010. pag. 77-80 (AIP CONFERENCE PROCEEDINGS).

Risultato della ricerca: Chapter

Di Salvo, T, Iaria, R, D'Ai', A, Burderi, Menna, Papitto & Riggio 2010, A relativistically broadened iron line from an Accreting Millisecond Pulsar. in X-RAY ASTRONOMY-2009: PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES. vol. 1248, AIP CONFERENCE PROCEEDINGS, pagg. 77-80.
Di Salvo T, Iaria R, D'Ai' A, Burderi, Menna, Papitto e altri. A relativistically broadened iron line from an Accreting Millisecond Pulsar. In X-RAY ASTRONOMY-2009: PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES. Vol. 1248. 2010. pag. 77-80. (AIP CONFERENCE PROCEEDINGS).
Di Salvo, Tiziana ; Iaria, Rosario ; D'Ai', Antonino ; Burderi ; Menna ; Papitto ; Riggio. / A relativistically broadened iron line from an Accreting Millisecond Pulsar. X-RAY ASTRONOMY-2009: PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES. Vol. 1248 2010. pagg. 77-80 (AIP CONFERENCE PROCEEDINGS).
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abstract = "The capabilities of XMM-Newton have been fully exploited to detect a broadened iron Kα emission line from the 2.5 ms Accreting Millisecond Pulsar, SAX J1808.4-3658. The energy of the transition is compatible with fluorescence from neutral/lowly ionized iron. The observed large width (FWHM more than 1 keV) can be explained through Doppler and relativistic broadening from the inner rings of an accretion disc close to the NS. From a fit of the line shape with a diskline model we obtain an estimate of the inner disc radius of 18.0-5.6+7.6km for a 1.4 M⊙ neutron star. The disc is therefore truncated inside the corotation radius (31 km for SAX J1808.4-3658), in agreement with the observation of coherent pulsations. From our estimate of the inner disc radius, we infer that the magnetic field of the neutron star is in the range 1-5×108G. {\circledC} 2010 American Institute of Physics.",
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TY - CHAP

T1 - A relativistically broadened iron line from an Accreting Millisecond Pulsar

AU - Di Salvo, Tiziana

AU - Iaria, Rosario

AU - D'Ai', Antonino

AU - Burderi, null

AU - Menna, null

AU - Papitto, null

AU - Riggio, null

PY - 2010

Y1 - 2010

N2 - The capabilities of XMM-Newton have been fully exploited to detect a broadened iron Kα emission line from the 2.5 ms Accreting Millisecond Pulsar, SAX J1808.4-3658. The energy of the transition is compatible with fluorescence from neutral/lowly ionized iron. The observed large width (FWHM more than 1 keV) can be explained through Doppler and relativistic broadening from the inner rings of an accretion disc close to the NS. From a fit of the line shape with a diskline model we obtain an estimate of the inner disc radius of 18.0-5.6+7.6km for a 1.4 M⊙ neutron star. The disc is therefore truncated inside the corotation radius (31 km for SAX J1808.4-3658), in agreement with the observation of coherent pulsations. From our estimate of the inner disc radius, we infer that the magnetic field of the neutron star is in the range 1-5×108G. © 2010 American Institute of Physics.

AB - The capabilities of XMM-Newton have been fully exploited to detect a broadened iron Kα emission line from the 2.5 ms Accreting Millisecond Pulsar, SAX J1808.4-3658. The energy of the transition is compatible with fluorescence from neutral/lowly ionized iron. The observed large width (FWHM more than 1 keV) can be explained through Doppler and relativistic broadening from the inner rings of an accretion disc close to the NS. From a fit of the line shape with a diskline model we obtain an estimate of the inner disc radius of 18.0-5.6+7.6km for a 1.4 M⊙ neutron star. The disc is therefore truncated inside the corotation radius (31 km for SAX J1808.4-3658), in agreement with the observation of coherent pulsations. From our estimate of the inner disc radius, we infer that the magnetic field of the neutron star is in the range 1-5×108G. © 2010 American Institute of Physics.

UR - http://hdl.handle.net/10447/229368

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BT - X-RAY ASTRONOMY-2009: PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES

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