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R Turolla - One of the best experts on this subject based on the ideXlab platform.

  • discovery of a strongly phase variable spectral feature in the isolated neutron star rx j0720 4 3125
    The Astrophysical Journal, 2015
    Co-Authors: A Borghese, N Rea, A Tiengo, R Turolla, Coti F Zelati
    Abstract:

    We present the discovery of a strongly phase-variable absorption feature in the X-ray spectrum of the nearby, thermally emitting, isolated neutron star RX J0720.4-3125. The absorption line was detected performing detailed phase-resolved spectroscopy in 20 XMM-Newton observations, covering the period 2000 May-2012 September. The feature has an energy of ~750 eV, an equivalent width of ~30 eV, and it is significantly detected for only ~20% of the pulsar rotation. The absorption feature appears to be stable over the timespan covered by the observations. Given its strong dependence on the pulsar rotational phase and its narrow width, a Plausible Interpretation is in terms of resonant proton cyclotron absorption/scattering in a confined magnetic structure very close to the neutron star surface. The inferred field in such a magnetic loop is Bloop ∼ 2 x times 10 G, a factor of ~7 higher than the surface dipolar magnetic field.

  • discovery of a strongly phase variable spectral feature in the isolated neutron star rx j0720 4 3125
    arXiv: High Energy Astrophysical Phenomena, 2015
    Co-Authors: A Borghese, N Rea, Francesco Coti Zelati, A Tiengo, R Turolla
    Abstract:

    We present the discovery of a strongly phase-variable absorption feature in the X-ray spectrum of the nearby, thermally-emitting, isolated neutron star RX J0720.4-3125. The absorption line was detected performing detailed phase-resolved spectroscopy in 20 XMM-Newton observations, covering the period May 2000 - September 2012. The feature has an energy of ~750eV, an equivalent width of ~30eV, and it is significantly detected for only ~20% of the pulsar rotation. The absorption feature appears to be stable over the timespan covered by the observations. Given its strong dependence on the pulsar rotational phase and its narrow width, a Plausible Interpretation is in terms of resonant proton cyclotron absorption/scattering in a confined magnetic structure very close to the neutron star surface. The inferred field in such a magnetic loop is B_loop ~ 2 x 10^{14} G, a factor of ~7 higher than the surface dipolar magnetic field.

A Tiengo - One of the best experts on this subject based on the ideXlab platform.

  • discovery of a strongly phase variable spectral feature in the isolated neutron star rx j0720 4 3125
    The Astrophysical Journal, 2015
    Co-Authors: A Borghese, N Rea, A Tiengo, R Turolla, Coti F Zelati
    Abstract:

    We present the discovery of a strongly phase-variable absorption feature in the X-ray spectrum of the nearby, thermally emitting, isolated neutron star RX J0720.4-3125. The absorption line was detected performing detailed phase-resolved spectroscopy in 20 XMM-Newton observations, covering the period 2000 May-2012 September. The feature has an energy of ~750 eV, an equivalent width of ~30 eV, and it is significantly detected for only ~20% of the pulsar rotation. The absorption feature appears to be stable over the timespan covered by the observations. Given its strong dependence on the pulsar rotational phase and its narrow width, a Plausible Interpretation is in terms of resonant proton cyclotron absorption/scattering in a confined magnetic structure very close to the neutron star surface. The inferred field in such a magnetic loop is Bloop ∼ 2 x times 10 G, a factor of ~7 higher than the surface dipolar magnetic field.

  • discovery of a strongly phase variable spectral feature in the isolated neutron star rx j0720 4 3125
    arXiv: High Energy Astrophysical Phenomena, 2015
    Co-Authors: A Borghese, N Rea, Francesco Coti Zelati, A Tiengo, R Turolla
    Abstract:

    We present the discovery of a strongly phase-variable absorption feature in the X-ray spectrum of the nearby, thermally-emitting, isolated neutron star RX J0720.4-3125. The absorption line was detected performing detailed phase-resolved spectroscopy in 20 XMM-Newton observations, covering the period May 2000 - September 2012. The feature has an energy of ~750eV, an equivalent width of ~30eV, and it is significantly detected for only ~20% of the pulsar rotation. The absorption feature appears to be stable over the timespan covered by the observations. Given its strong dependence on the pulsar rotational phase and its narrow width, a Plausible Interpretation is in terms of resonant proton cyclotron absorption/scattering in a confined magnetic structure very close to the neutron star surface. The inferred field in such a magnetic loop is B_loop ~ 2 x 10^{14} G, a factor of ~7 higher than the surface dipolar magnetic field.

N Rea - One of the best experts on this subject based on the ideXlab platform.

  • discovery of a strongly phase variable spectral feature in the isolated neutron star rx j0720 4 3125
    The Astrophysical Journal, 2015
    Co-Authors: A Borghese, N Rea, A Tiengo, R Turolla, Coti F Zelati
    Abstract:

    We present the discovery of a strongly phase-variable absorption feature in the X-ray spectrum of the nearby, thermally emitting, isolated neutron star RX J0720.4-3125. The absorption line was detected performing detailed phase-resolved spectroscopy in 20 XMM-Newton observations, covering the period 2000 May-2012 September. The feature has an energy of ~750 eV, an equivalent width of ~30 eV, and it is significantly detected for only ~20% of the pulsar rotation. The absorption feature appears to be stable over the timespan covered by the observations. Given its strong dependence on the pulsar rotational phase and its narrow width, a Plausible Interpretation is in terms of resonant proton cyclotron absorption/scattering in a confined magnetic structure very close to the neutron star surface. The inferred field in such a magnetic loop is Bloop ∼ 2 x times 10 G, a factor of ~7 higher than the surface dipolar magnetic field.

  • discovery of a strongly phase variable spectral feature in the isolated neutron star rx j0720 4 3125
    arXiv: High Energy Astrophysical Phenomena, 2015
    Co-Authors: A Borghese, N Rea, Francesco Coti Zelati, A Tiengo, R Turolla
    Abstract:

    We present the discovery of a strongly phase-variable absorption feature in the X-ray spectrum of the nearby, thermally-emitting, isolated neutron star RX J0720.4-3125. The absorption line was detected performing detailed phase-resolved spectroscopy in 20 XMM-Newton observations, covering the period May 2000 - September 2012. The feature has an energy of ~750eV, an equivalent width of ~30eV, and it is significantly detected for only ~20% of the pulsar rotation. The absorption feature appears to be stable over the timespan covered by the observations. Given its strong dependence on the pulsar rotational phase and its narrow width, a Plausible Interpretation is in terms of resonant proton cyclotron absorption/scattering in a confined magnetic structure very close to the neutron star surface. The inferred field in such a magnetic loop is B_loop ~ 2 x 10^{14} G, a factor of ~7 higher than the surface dipolar magnetic field.

Coti F Zelati - One of the best experts on this subject based on the ideXlab platform.

  • discovery of a strongly phase variable spectral feature in the isolated neutron star rx j0720 4 3125
    The Astrophysical Journal, 2015
    Co-Authors: A Borghese, N Rea, A Tiengo, R Turolla, Coti F Zelati
    Abstract:

    We present the discovery of a strongly phase-variable absorption feature in the X-ray spectrum of the nearby, thermally emitting, isolated neutron star RX J0720.4-3125. The absorption line was detected performing detailed phase-resolved spectroscopy in 20 XMM-Newton observations, covering the period 2000 May-2012 September. The feature has an energy of ~750 eV, an equivalent width of ~30 eV, and it is significantly detected for only ~20% of the pulsar rotation. The absorption feature appears to be stable over the timespan covered by the observations. Given its strong dependence on the pulsar rotational phase and its narrow width, a Plausible Interpretation is in terms of resonant proton cyclotron absorption/scattering in a confined magnetic structure very close to the neutron star surface. The inferred field in such a magnetic loop is Bloop ∼ 2 x times 10 G, a factor of ~7 higher than the surface dipolar magnetic field.

A Borghese - One of the best experts on this subject based on the ideXlab platform.

  • discovery of a strongly phase variable spectral feature in the isolated neutron star rx j0720 4 3125
    The Astrophysical Journal, 2015
    Co-Authors: A Borghese, N Rea, A Tiengo, R Turolla, Coti F Zelati
    Abstract:

    We present the discovery of a strongly phase-variable absorption feature in the X-ray spectrum of the nearby, thermally emitting, isolated neutron star RX J0720.4-3125. The absorption line was detected performing detailed phase-resolved spectroscopy in 20 XMM-Newton observations, covering the period 2000 May-2012 September. The feature has an energy of ~750 eV, an equivalent width of ~30 eV, and it is significantly detected for only ~20% of the pulsar rotation. The absorption feature appears to be stable over the timespan covered by the observations. Given its strong dependence on the pulsar rotational phase and its narrow width, a Plausible Interpretation is in terms of resonant proton cyclotron absorption/scattering in a confined magnetic structure very close to the neutron star surface. The inferred field in such a magnetic loop is Bloop ∼ 2 x times 10 G, a factor of ~7 higher than the surface dipolar magnetic field.

  • discovery of a strongly phase variable spectral feature in the isolated neutron star rx j0720 4 3125
    arXiv: High Energy Astrophysical Phenomena, 2015
    Co-Authors: A Borghese, N Rea, Francesco Coti Zelati, A Tiengo, R Turolla
    Abstract:

    We present the discovery of a strongly phase-variable absorption feature in the X-ray spectrum of the nearby, thermally-emitting, isolated neutron star RX J0720.4-3125. The absorption line was detected performing detailed phase-resolved spectroscopy in 20 XMM-Newton observations, covering the period May 2000 - September 2012. The feature has an energy of ~750eV, an equivalent width of ~30eV, and it is significantly detected for only ~20% of the pulsar rotation. The absorption feature appears to be stable over the timespan covered by the observations. Given its strong dependence on the pulsar rotational phase and its narrow width, a Plausible Interpretation is in terms of resonant proton cyclotron absorption/scattering in a confined magnetic structure very close to the neutron star surface. The inferred field in such a magnetic loop is B_loop ~ 2 x 10^{14} G, a factor of ~7 higher than the surface dipolar magnetic field.