2009MNRAS.400..168L


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.15CEST07:02:29

2009MNRAS.400..168L - Mon. Not. R. Astron. Soc., 400, 168-175 (2009/November-3)

The X-ray properties of the energetic pulsar PSR J1838-0655.

LIN L.C.-C., TAKATA J., HWANG C.-Y. and LIANG J.-S.

Abstract (from CDS):

We present and interpret several new X-ray features of the X-ray pulsar PSR J1838-0655. The X-ray data are obtained from the archival data of Chandra, RXTE and Suzaku. We combine all these X-ray data and fit the spectra with different models. We find that the joint spectra are difficult to fit with a single power law; a broken power-law model with a break at around 6.5 keV can improve the fit significantly. The photon index changes from Γ = 1.0 (below 6.5 keV) to 1.5 (above 6.5 keV); this indicates a softer spectral behaviour at hard X-rays. The X-ray flux at 2-20 keV is found to be 1.6x10–11 erg/cm2/s. The conversion efficiency from the spin-down luminosity is ∼0.9 per cent at 0.8-10 keV, which is much higher than that (∼10–3 to 10–4 per cent) of the pulsars that show similar timing properties. We discuss non-thermal radiation mechanisms for the observed high X-ray conversion efficiency and find that emission from the magnetosphere of a greatly inclined rotator is the most favourable interpretation for the conversion rate and the pulse profiles at X-ray bands. A line feature close to 6.65 keV is also detected in the spectra of Suzaku/X-ray imaging spectrometer; it might be the Kα emission of highly ionized Fe surrounding the pulsar.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): line: identification - radiation mechanisms: general - pulsars: general - gamma-rays: observations - X-rays: general

Simbad objects: 12

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Number of rows : 12

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* CM Tau Psr 05 34 31.93830 +22 00 52.1758           ~ 4880 1
2 M 1 SNR 05 34 31.94 +22 00 52.2           ~ 5723 4
3 NAME Geminga Psr 06 33 54.153 +17 46 12.91           ~ 1109 0
4 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545     15.10     ~ 2105 1
5 AX J1420.1-6049 Rad 14 20 07.8 -60 48 56           ~ 21 0
6 PSR J1420-6048 Psr 14 20 08.190 -60 48 14.85           ~ 165 0
7 PSR B1509-58 Psr 15 13 55.52 -59 08 08.8     13.06     ~ 805 1
8 PSR B1706-44 Psr 17 09 42.7460 -44 29 07.200     13.30     ~ 590 1
9 [GH2008] 8 X 18 37 51.518 -06 53 43.61           ~ 8 0
10 GPS 1835-070 X 18 37 53 -07 02.5           ~ 3 0
11 PSR J1838-0655 Psr 18 38 03.13 -06 55 33.4           ~ 83 1
12 AX J1838.0-0655 SNR 18 38 03.13 -06 55 33.4           ~ 71 2

    Equat.    Gal    SGal    Ecl

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