A broadband X-ray study of the young neutron star PSR B1706-44

John P. Finley, Radhika Srinivasan, Yoshitaka Saito, Masaharu Hiriyama, Tuneyoshi Kamae, Kenji Yoshida

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23 Citations (Scopus)


The young "Vela"-like neutron star PSR B1706-44 was imaged by both the HRI aboard ROSAT and the solid-state imaging spectrometers and gas imaging spectrometers aboard ASCA during a 6 month period in late 1994 and early 1995. The broadband data set, extending over two decades in energy, allowed a detailed spatial, spectral, and temporal study to be conducted. PSR B1706-44 is found embedded in a compact synchrotron nebula of physical size ∼0.32 pc and displays the morphology characteristic of the other young neutron stars in the 104-105 yr age range. No pulsations at the radio period were detected in either the ROSAT or the ASCA data. The spectrum is well described by a power-law distribution, and the data are consistent with there being no spectral break from the radio through the soft X-ray band. The unpulsed TeV emission that has been observed from PSR B1706-44 can be reconciled with these observations if the TeV emission results from the up-scattering of background IR photons by the population of high-energy particles that produce the soft X-ray photons.

Original languageEnglish
Pages (from-to)884-890
Number of pages7
JournalAstrophysical Journal
Issue number2 PART I
Publication statusPublished - 1998
Externally publishedYes


  • Pulsars: individual (PSR B1706-44)
  • Stars: neutron
  • X-rays: stars

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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