Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 141 |
| Seitenumfang | 6 |
| Fachzeitschrift | Astrophysical Journal |
| Jahrgang | 773 |
| Ausgabenummer | 2 |
| Frühes Online-Datum | 5 Aug. 2013 |
| Publikationsstatus | Veröffentlicht - 20 Aug. 2013 |
Abstract
We present a Chandra X-ray survey of the disrupted recycled pulsars (DRPs), isolated radio pulsars with P > 20 ms and Bs < 3 × 1010 G. These observations were motivated as a search for the immediate descendants of the ≈10 central compact objects (CCOs) in supernova remnants (SNRs), 3 of which have similar timing and magnetic properties as the DRPs, but are bright, thermal X-ray sources consistent with minimal neutron star (NS) cooling curves. Since none of the DPRs were detected in this survey, there is no evidence that they are "orphaned" CCOs, NSs whose SNRs has dissipated. Upper limits on their thermal X-ray luminosities are in the range of log Lx [erg s-1] = 31.8-32.8, which implies cooling ages >104-105 yr, roughly 10 times the ages of the ≈10 known CCOs in a similar volume of the Galaxy. The order of a hundred CCO descendants that could be detected by this method are thus either intrinsically radio quiet or occupy a different region of (P, Bs ) parameter space from the DRPs. This motivates a new X-ray search for orphaned CCOs among radio pulsars with larger B-fields, which could verify the theory that their fields are buried by the fall-back of supernova ejecta, but quickly regrow to join the normal pulsar population.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Astronomie und Astrophysik
- Erdkunde und Planetologie (insg.)
- Astronomie und Planetologie
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in: Astrophysical Journal, Jahrgang 773, Nr. 2, 141, 20.08.2013.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - X-ray observations of disrupted recycled pulsars
T2 - No refuge for orphaned central compact objects
AU - Gotthelf, E. V.
AU - Halpern, J. P.
AU - Allen, B.
AU - Knispel, B.
PY - 2013/8/20
Y1 - 2013/8/20
N2 - We present a Chandra X-ray survey of the disrupted recycled pulsars (DRPs), isolated radio pulsars with P > 20 ms and Bs < 3 × 1010 G. These observations were motivated as a search for the immediate descendants of the ≈10 central compact objects (CCOs) in supernova remnants (SNRs), 3 of which have similar timing and magnetic properties as the DRPs, but are bright, thermal X-ray sources consistent with minimal neutron star (NS) cooling curves. Since none of the DPRs were detected in this survey, there is no evidence that they are "orphaned" CCOs, NSs whose SNRs has dissipated. Upper limits on their thermal X-ray luminosities are in the range of log Lx [erg s-1] = 31.8-32.8, which implies cooling ages >104-105 yr, roughly 10 times the ages of the ≈10 known CCOs in a similar volume of the Galaxy. The order of a hundred CCO descendants that could be detected by this method are thus either intrinsically radio quiet or occupy a different region of (P, Bs ) parameter space from the DRPs. This motivates a new X-ray search for orphaned CCOs among radio pulsars with larger B-fields, which could verify the theory that their fields are buried by the fall-back of supernova ejecta, but quickly regrow to join the normal pulsar population.
AB - We present a Chandra X-ray survey of the disrupted recycled pulsars (DRPs), isolated radio pulsars with P > 20 ms and Bs < 3 × 1010 G. These observations were motivated as a search for the immediate descendants of the ≈10 central compact objects (CCOs) in supernova remnants (SNRs), 3 of which have similar timing and magnetic properties as the DRPs, but are bright, thermal X-ray sources consistent with minimal neutron star (NS) cooling curves. Since none of the DPRs were detected in this survey, there is no evidence that they are "orphaned" CCOs, NSs whose SNRs has dissipated. Upper limits on their thermal X-ray luminosities are in the range of log Lx [erg s-1] = 31.8-32.8, which implies cooling ages >104-105 yr, roughly 10 times the ages of the ≈10 known CCOs in a similar volume of the Galaxy. The order of a hundred CCO descendants that could be detected by this method are thus either intrinsically radio quiet or occupy a different region of (P, Bs ) parameter space from the DRPs. This motivates a new X-ray search for orphaned CCOs among radio pulsars with larger B-fields, which could verify the theory that their fields are buried by the fall-back of supernova ejecta, but quickly regrow to join the normal pulsar population.
KW - stars: neutron
UR - http://www.scopus.com/inward/record.url?scp=84881430944&partnerID=8YFLogxK
U2 - 10.48550/arXiv.1307.2146
DO - 10.48550/arXiv.1307.2146
M3 - Article
AN - SCOPUS:84881430944
VL - 773
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
M1 - 141
ER -