2002A&A...391..571H

Query : 2002A&A...391..571H

2002A&A...391..571H - Astronomy and Astrophysics, volume 391571-576 (2002/8-4)

XMM-Newton observations of the isolated neutron star RX J0806.4-4123.

HABERL F. and ZAVLIN V.E.

Abstract (from CDS):

The isolated neutron star RX J0806.4-4123 was observed with XMM-Newton in November 2000. The data from the three EPIC instruments allowed us (i) to derive an improved X-ray position to an accuracy of 2-3'', (ii) to accumulate the first medium-resolution soft X-ray spectra of high statistical quality and (iii) to find a candidate for the neutron star rotation period. Although this period of 11.3714s is formally detected at a 3.5σ level in the EPIC-pn data, the similar pulse profiles deduced from all three EPIC instruments increase the confidence that the period is real. The pulsed fraction of ∼6% would then be the weakest X-ray flux modulation detected from dim isolated neutron stars. We fitted the X-ray spectra with blackbody and neutron star atmosphere models and discuss the results with respect to the brightness limit placed by optical images. The reduced size of the error circle on the X-ray position should allow deeper searches for an optical counterpart.

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Journal keyword(s): X-rays: stars - stars: neutron - stars: magnetic fields - stars: individual: RX J0806.4-4123

Simbad objects: 27

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Number of rows : 27
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SNR G119.5+10.2 SNR 00 06.6 +72 47           ~ 268 1
2 RX J0420.0-5022 N* 04 20 02.2 -50 22 46     25.5     ~ 98 0
3 RX J0720.4-3125 N* 07 20 24.961 -31 25 50.21   26.1   27.0   ~ 316 0
4 2MASS J08054601-4115049 * 08 05 46.02 -41 15 04.9   14.5       ~ 1 0
5 2MASS J08060973-4124401 * 08 06 09.7326404856 -41 24 40.224753108   19.2       ~ 1 0
6 RX J0806.4-4123 N* 08 06 23.0 -41 22 33           ~ 87 0
7 2MASS J08062995-4131423 * 08 06 29.9563623048 -41 31 42.367826352   14.0       ~ 1 0
8 2MASS J08063078-4112330 * 08 06 30.7871872056 -41 12 33.081424884   16.5       ~ 1 0
9 2MASS J08063118-4128331 * 08 06 31.1875698192 -41 28 33.200202036   16.0       ~ 1 0
10 NAME Pup A SNR 08 24 07 -42 59.8           ~ 636 1
11 PSR J1119-6127 Psr 11 19 14.30 -61 27 49.5           ~ 439 1
12 SNR G292.2-00.5 SNR 11 19.3 -61 28           ~ 98 1
13 SNR G295.5+09.7 SNR 12 09 40 -52 25.0           ~ 301 1
14 RBS 1223 N* 13 08 48.7 +21 27 08   28.6 28.6     ~ 163 1
15 PSR J1357-6429 Psr 13 57 02.525 -64 29 29.89           ~ 171 1
16 AJG 44 Psr 16 17 33.000 -51 02 00.00           ~ 552 3
17 PSR J1632-48 Psr 16 32 39.94 -48 18 52.8           ~ 36 0
18 PSR J1726-3530 Psr 17 26 07.51 -35 29 58.0           ~ 37 0
19 PSR J1836+5925 Psr 18 36 13.661 +59 25 29.77           ~ 153 0
20 PSR J1846-0258 Psr 18 46 24.75 -02 58 29.6           ~ 388 2
21 SNR G033.6+00.1 SNR 18 52 29.000 +00 38 42.00           ~ 302 2
22 RX J1856.6-3754 Psr 18 56 35.11 -37 54 30.5     25.7     ~ 456 0
23 SNR G068.8+02.6 SNR 19 52 55 +32 54.2           ~ 361 1
24 PSR B1951+32 Psr 19 52 58.181 +32 52 40.98           ~ 615 2
25 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1
26 SNR G352.2-00.1 SNR ~ ~           ~ 8 0
27 SNR G336.1-00.2 SNR ~ ~           ~ 3 0

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