2010ApJ...716.1345G


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.16CEST08:57:03

2010ApJ...716.1345G - Astrophys. J., 716, 1345-1355 (2010/June-3)

Long-term X-ray changes in the emission from the anomalous X-ray pulsar 4U 0142+61.

GONZALEZ M.E., DIB R., KASPI V.M., WOODS P.M., TAM C.R. and GAVRIIL F.P.

Abstract (from CDS):

We present results obtained from X-ray observations of the anomalous X-ray pulsar (AXP) 4U 0142+61 taken between 2000 and 2008 using XMM-Newton, Chandra, and Swift. These observations coincide with periods of long-term changes and burst epochs previously reported using the Rossi X-ray Timing Explorer (RXTE). In observations taken before 2006, we find that the pulse profile became more sinusoidal and the pulsed fraction increased with time. These results confirm those derived using RXTE and expand the observed evolution to energies below 2 keV. The total flux in the 0.5-10 keV band determined with XMM-Newton is observed to be nearly constant in observations taken before 2006, while an increase of ∼10% is seen afterwards and coincides with the burst activity detected from the source in 2006-2007. After these bursts, the evolution toward more sinusoidal pulse profiles ceased while the flux and pulsed fraction returned to pre-bursts levels. No evidence for large-scale, long-term changes in the emission as a result of the bursts is seen. We also report on observations taken with the Gemini telescope after two bursts which show source magnitudes consistent with previous measurements. Our results demonstrate the wide range of X-ray variability characteristics seen in AXPs and we discuss them in light of current emission models for these sources.

Abstract Copyright:

Journal keyword(s): pulsars: general - pulsars: individual: 4U 0142+61 - stars: neutron

Simbad objects: 7

goto Full paper

goto View the reference in ADS

Number of rows : 7

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 PSR J0146+6145 Psr 01 46 22.21 +61 45 03.8   28.100 25.620     ~ 519 0
2 2XMM J050106.5+451634 X 05 01 08.0 +45 16 31           ~ 110 0
3 2E 2336 HXB 10 50 08.93 -59 53 19.9           Be 385 0
4 PSR J1708-4008 Psr 17 08 49.0 -40 09 10           ~ 269 0
5 AX J1809.8-1943 Psr 18 09 51.07 -19 43 51.8           ~ 385 0
6 PSR J1841-0456 Psr 18 41 19.29 -04 56 11.4           ~ 239 1
7 2E 4673 HXB 23 01 08.14 +58 52 44.5           ~ 597 1

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2010ApJ...716.1345G and select 'bookmark this link' or equivalent in the popup menu


2021.04.16-08:57:03

© Université de Strasbourg/CNRS

    • Contact