|
| | | | |
| | | |
| Stat |
Members: 3667
Articles: 2'599'751
Articles rated: 2609
16 February 2025 |
|
| | | | |
|
Article overview
| |
|
|
Constraining the parameters of the pulsar wind nebula DA 495 and its pulsar with Chandra and XMM-Newton | | A. Karpova
; D. Zyuzin
; A. Danilenko
; Yu. Shibanov
; | | Date: |
3 Aug 2015 | | Abstract: | We present spectral and timing analyses of the X-ray emission from the pulsar
wind nebula DA 495 and its central object, J1952.2+2925, suggested to be the
pulsar, using archival Chandra and XMM-Newton data. J1952.2+2925 has a pure
thermal spectrum which is equally well fitted either by the blackbody model
with a temperature of $approx 215$ eV and an emitting area radius of $approx
0.6$ km or by magnetized neutron star atmosphere models with temperatures of
80-90 eV. In the latter case the thermal emission can come from the entire
neutron star surface which temperature is consistent with standard neutron star
cooling scenarios. We place also an upper limit on the J1952.2+2925 nonthermal
flux. The derived spectral parameters are generally compatible with published
ones based only on the Chandra data, but they are much more accurate due to the
inclusion of XMM-Newton data. No pulsations were found and we placed an upper
limit for the J1952.2+2925 pulsed emission fraction of 40 per cent. Utilizing
the interstellar absorption-distance relation, we estimated the distance to DA
495, which can be as large as 5 kpc if J1952.2+2925 emission is described by
the atmosphere models. We compiled possible multi-wavelength spectra of the
nebula including radio data; they depend on the spectral model of the central
object. Comparing the results with other pulsar plus wind nebula systems we set
reasonable constraints on the J1952.2+2925 spin-down luminosity and age. We
suggest that the Fermi source 3FGL J1951.6+2926 is the likely $gamma$-ray
counterpart of J1952.2+2925. | | Source: | arXiv, 1508.0002 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
|
| |
|
|
|
REGISTER