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Abstract <p>We have identified the radio and gamma-ray pulsars known in the eastern half of the sky in the soft X-ray band using data from the all-sky X-ray survey performed by the eROSITA telescope onboard the Spectrum–Roentgen–Gamma observatory. As a result, we have found new candidate counterparts for 12 pulsars of different ages and types at a confidence level <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\({\gtrsim}3\sigma\)</EquationSource> <!--Letters2570028Shibanov-m1--> </InlineEquation>. A comparable number has been previously identified in the western half of the sky. In total, this accounts for about 12<InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\%\)</EquationSource> <!--Letters2570028Shibanov-m2--> </InlineEquation> of the number of known pulsars that have already been detected in X-rays. We give estimates of the X-ray fluxes from the new counterparts, preliminary characteristics of their X-ray spectra, and brief descriptions of the properties of the pulsars themselves. The telescope has also detected 56 pulsars in the eastern half of the sky previously identified in X-rays by other observatories.</p>

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Identification of Radio and Gamma-ray Pulsars in X-rays Using Data from the SRG/eROSITA All-Sky Survey

  • 期刊论文

  • 发表日期：

    2025年3月1日

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  • Yu. A. Shibanov,
  • A. V. Karpova,
  • D. A. Zyuzin,
  • M. R. Gilfanov

摘要

Abstract

We have identified the radio and gamma-ray pulsars known in the eastern half of the sky in the soft X-ray band using data from the all-sky X-ray survey performed by the eROSITA telescope onboard the Spectrum–Roentgen–Gamma observatory. As a result, we have found new candidate counterparts for 12 pulsars of different ages and types at a confidence level \({\gtrsim}3\sigma\) . A comparable number has been previously identified in the western half of the sky. In total, this accounts for about 12 \(\%\) of the number of known pulsars that have already been detected in X-rays. We give estimates of the X-ray fluxes from the new counterparts, preliminary characteristics of their X-ray spectra, and brief descriptions of the properties of the pulsars themselves. The telescope has also detected 56 pulsars in the eastern half of the sky previously identified in X-rays by other observatories.