X-ray and Radio Variabilities of PSR J2032+4127 near PeriastronCitation formats

  • External authors:
  • C.-Y. Ng
  • W. C. G. Ho
  • E. V. Gotthelf
  • J. P. Halpern
  • Malcolm J. Coe
  • Andrew Lyne
  • K. S. Wood
  • M. Kerr

Standard

X-ray and Radio Variabilities of PSR J2032+4127 near Periastron. / Ng, C.-Y.; Ho, W. C. G.; Gotthelf, E. V.; Halpern, J. P.; Coe , Malcolm J. ; Stappers, Benjamin; Lyne, Andrew; Wood, K. S.; Kerr, M.

In: The Astrophysical Journal, 08.2019.

Research output: Contribution to journalArticlepeer-review

Harvard

Ng, C-Y, Ho, WCG, Gotthelf, EV, Halpern, JP, Coe , MJ, Stappers, B, Lyne, A, Wood, KS & Kerr, M 2019, 'X-ray and Radio Variabilities of PSR J2032+4127 near Periastron', The Astrophysical Journal. https://doi.org/10.3847/1538-4357/ab2adb

APA

Ng, C-Y., Ho, W. C. G., Gotthelf, E. V., Halpern, J. P., Coe , M. J., Stappers, B., Lyne, A., Wood, K. S., & Kerr, M. (2019). X-ray and Radio Variabilities of PSR J2032+4127 near Periastron. The Astrophysical Journal. https://doi.org/10.3847/1538-4357/ab2adb

Vancouver

Ng C-Y, Ho WCG, Gotthelf EV, Halpern JP, Coe MJ, Stappers B et al. X-ray and Radio Variabilities of PSR J2032+4127 near Periastron. The Astrophysical Journal. 2019 Aug. https://doi.org/10.3847/1538-4357/ab2adb

Author

Ng, C.-Y. ; Ho, W. C. G. ; Gotthelf, E. V. ; Halpern, J. P. ; Coe , Malcolm J. ; Stappers, Benjamin ; Lyne, Andrew ; Wood, K. S. ; Kerr, M. / X-ray and Radio Variabilities of PSR J2032+4127 near Periastron. In: The Astrophysical Journal. 2019.

Bibtex

@article{a52d613bdd514e7d8df5241a7a3785b3,
title = "X-ray and Radio Variabilities of PSR J2032+4127 near Periastron",
abstract = "We present X-ray and radio monitoring observations of the gamma-ray binary PSR J2032+4127/MT91 213 during its periastron passage in late 2017. Dedicated Chandra, XMM-Newton, NuSTAR X-ray observations and VLA radio observations of this long orbit (50 years), 143 ms pulsar/Be star system clearly revealed flux and spectral variability during the passage. The X-ray spectrum hardened near periastron, with a signicant decrease in the power-law photon index from Γ ≈ 2 to 1.2 and evidence of an increased absorption column density. We identied a possible spectral break at a few keV in the spectrum that suggests synchrotron cooling. A coincident radio and X-ray are occurred one week after periastron, which is possibly the result of the pulsar wind interacting with the Be stellar disk and generating synchrotron radiation. However, a multi-wavelength comparison indicate that the X-ray and radio spectra cannot be simply connected by a single power-law component. Hence, the emission in these two energy bands must originate from different particle populations.",
keywords = "stars: neutron, pulsars: individual (PSR J2032+4127), stars: individual (MT91 213), X-rays: binaries, X-rays: individual: PSR J2032+4127",
author = "C.-Y. Ng and Ho, {W. C. G.} and Gotthelf, {E. V.} and Halpern, {J. P.} and Coe, {Malcolm J.} and Benjamin Stappers and Andrew Lyne and Wood, {K. S.} and M. Kerr",
year = "2019",
month = aug,
doi = "10.3847/1538-4357/ab2adb",
language = "English",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",

}

RIS

TY - JOUR

T1 - X-ray and Radio Variabilities of PSR J2032+4127 near Periastron

AU - Ng, C.-Y.

AU - Ho, W. C. G.

AU - Gotthelf, E. V.

AU - Halpern, J. P.

AU - Coe , Malcolm J.

AU - Stappers, Benjamin

AU - Lyne, Andrew

AU - Wood, K. S.

AU - Kerr, M.

PY - 2019/8

Y1 - 2019/8

N2 - We present X-ray and radio monitoring observations of the gamma-ray binary PSR J2032+4127/MT91 213 during its periastron passage in late 2017. Dedicated Chandra, XMM-Newton, NuSTAR X-ray observations and VLA radio observations of this long orbit (50 years), 143 ms pulsar/Be star system clearly revealed flux and spectral variability during the passage. The X-ray spectrum hardened near periastron, with a signicant decrease in the power-law photon index from Γ ≈ 2 to 1.2 and evidence of an increased absorption column density. We identied a possible spectral break at a few keV in the spectrum that suggests synchrotron cooling. A coincident radio and X-ray are occurred one week after periastron, which is possibly the result of the pulsar wind interacting with the Be stellar disk and generating synchrotron radiation. However, a multi-wavelength comparison indicate that the X-ray and radio spectra cannot be simply connected by a single power-law component. Hence, the emission in these two energy bands must originate from different particle populations.

AB - We present X-ray and radio monitoring observations of the gamma-ray binary PSR J2032+4127/MT91 213 during its periastron passage in late 2017. Dedicated Chandra, XMM-Newton, NuSTAR X-ray observations and VLA radio observations of this long orbit (50 years), 143 ms pulsar/Be star system clearly revealed flux and spectral variability during the passage. The X-ray spectrum hardened near periastron, with a signicant decrease in the power-law photon index from Γ ≈ 2 to 1.2 and evidence of an increased absorption column density. We identied a possible spectral break at a few keV in the spectrum that suggests synchrotron cooling. A coincident radio and X-ray are occurred one week after periastron, which is possibly the result of the pulsar wind interacting with the Be stellar disk and generating synchrotron radiation. However, a multi-wavelength comparison indicate that the X-ray and radio spectra cannot be simply connected by a single power-law component. Hence, the emission in these two energy bands must originate from different particle populations.

KW - stars: neutron

KW - pulsars: individual (PSR J2032+4127)

KW - stars: individual (MT91 213)

KW - X-rays: binaries

KW - X-rays: individual: PSR J2032+4127

U2 - 10.3847/1538-4357/ab2adb

DO - 10.3847/1538-4357/ab2adb

M3 - Article

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

ER -