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  • 标题:A LOFAR census of non-recycled pulsars: extending to frequencies below 80 MHz ⋆
  • 本地全文:下载
  • 作者:A. V. Bilous ; L. Bondonneau ; V. I. Kondratiev
  • 期刊名称:Astronomy & Astrophysics
  • 印刷版ISSN:0004-6361
  • 电子版ISSN:1432-0746
  • 出版年度:2020
  • 卷号:635
  • 页码:1-16
  • DOI:10.1051/0004-6361/201936627
  • 语种:English
  • 出版社:EDP Sciences
  • 摘要:We present the results from the low-frequency (40–78 MHz) extension of the first pulsar census of non-recycled pulsars carried out with the LOw-Frequency ARray (LOFAR). We used the low-band antennas of the LOFAR core stations to observe 87 pulsars out of 158 that had been previously detected using high-band antennas. We present flux densities and flux-calibrated profiles for the 43 pulsars we detected. Of this sample, 17 have not, to our knowledge, previously been detected at such low frequencies. Here we recalculate the spectral indices using the new low-frequency flux density measurements from the LOFAR census and discuss the prospects of studying pulsars at very low frequencies using current and upcoming facilities, such as the New Extension in Nançay Upgrading LOFAR (NenuFAR).
  • 关键词:enpulsars: general
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