2005A&A...440..693S


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.20CET14:49:22

2005A&A...440..693S - Astronomy and Astrophysics, volume 440, 693-700 (2005/9-3)

The near-UV pulse profile and spectrum of the pulsar PSR B0656+14.

SHIBANOV Y.A., SOLLERMAN J., LUNDQVIST P., GULL T. and LINDLER D.

Abstract (from CDS):

We have observed the middle-aged pulsar PSR B0656+14 with the prism and the NUV MAMA detector of the Space Telescope Imaging Spectrograph (STIS) to measure the pulsar spectrum and periodic pulsations in the near-ultraviolet (NUV). The pulsations are clearly detected, double-peaked and very similar to the optical pulse profile. The NUV pulsed fraction is 70±12%. The spectral slope of the dereddened phase-integrated spectrum in the ∼1800-3200Å range is ~αν=0.35±0.5 which together with the high pulse fraction indicates a non-thermal origin for the NUV emission. The total flux in the range ∼1700-3400Å is estimated to be 3.4±0.3x10–15erg/s/cm2 when corrected for E(B-V)=0.03mag. At a distance of 288pc this corresponds to a luminosity LNUV=3.4x1028erg/s assuming isotropy of the emission. We compare the NUV pulse profile with observations from radio to gamma-rays. The first NUV sub-pulse is in phase with the gamma-ray pulse marginally detected with EGRET, while the second NUV sub-pulse is similar both in shape and in phase with the non-thermal pulse in hard X-rays. This indicates a single origin of the non-thermal emission in the optical-NUV and in the X-rays. This is also supported by the observed NUV spectral slope, which is compatible with a blackbody plus power-law fit extended from the X-ray range, but dominated by the power-law component in most of the NUV range.

Abstract Copyright:

Journal keyword(s): stars: pulsars: individual: PSR B0656+14 - stars: pulsars: individual: PSR J0659+1414

CDS comments: Fig.1 U0975-04374987 is USNO-A2.0 0975-04374987.

Simbad objects: 7

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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 - 2020
#notes
1 V* CM Tau Psr 05 34 31.93830 +22 00 52.1758           F 4749 1
2 M 1 SNR 05 34 31.94 +22 00 52.2           ~ 5530 4
3 PSR B0540-69 Psr 05 40 10.84 -69 19 54.2           ~ 790 3
4 NAME Geminga Psr 06 33 54.153 +17 46 12.91           ~ 1078 0
5 PSR B0656+14 Psr 06 59 48.183 +14 14 21.54   24.85 24.90     ~ 745 1
6 2MASS J06594891+1414293 * 06 59 48.8833519531 +14 14 29.744726838   17.9 17.4     ~ 1 0
7 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545           ~ 2032 1

    Equat.    Gal    SGal    Ecl

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2020.02.20-14:49:22

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