A relativistically broadened iron line from an Accreting Millisecond Pulsar

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

Research output: Chapter in Book/Report/Conference proceedingChapter

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.
Original languageEnglish
Title of host publicationX-RAY ASTRONOMY-2009: PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES
Pages77-80
Number of pages4
Publication statusPublished - 2010

Publication series

NameAIP CONFERENCE PROCEEDINGS

Fingerprint

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

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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

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

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

Research output: Chapter in Book/Report/Conference proceedingChapter

Di Salvo, T, D'Ai', A, Iaria, R, Riggio, Burderi, Menna & Papitto 2010, A relativistically broadened iron line from an Accreting Millisecond Pulsar. in X-RAY ASTRONOMY-2009: PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES. AIP CONFERENCE PROCEEDINGS, pp. 77-80.
Di Salvo T, D'Ai' A, Iaria R, Riggio, Burderi, Menna et al. A relativistically broadened iron line from an Accreting Millisecond Pulsar. In X-RAY ASTRONOMY-2009: PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES. 2010. p. 77-80. (AIP CONFERENCE PROCEEDINGS).
Di Salvo, Tiziana ; D'Ai', Antonino ; Iaria, Rosario ; Riggio ; Burderi ; Menna ; Papitto. / A relativistically broadened iron line from an Accreting Millisecond Pulsar. X-RAY ASTRONOMY-2009: PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES. 2010. pp. 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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T1 - A relativistically broadened iron line from an Accreting Millisecond Pulsar

AU - Di Salvo, Tiziana

AU - D'Ai', Antonino

AU - Iaria, Rosario

AU - Riggio, null

AU - Burderi, null

AU - Menna, null

AU - Papitto, 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

M3 - Chapter

SN - 9780735407954

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

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