2017MNRAS.468.2637W

Query : 2017MNRAS.468.2637W

2017MNRAS.468.2637W - Mon. Not. R. Astron. Soc., 468, 2637-2644 (2017/July-1)

Robust fitting for pulsar timing analysis.

WANG Y., KEITH M.J., STAPPERS B. and ZHENG W.

Abstract (from CDS):

We introduce a robust fitting method into pulsar timing analysis to cope with the non-Gaussian noise. The general maximum likelihood estimator (M-estimator) can resist the impact of non-Gaussian noise by employing convex and bounded loss functions. Three loss functions, including the Huber function, the Bisquare function and the Welsch function, are investigated. The Shapiro-Wilk test is employed to test whether the uncertainty in the observed times of arrival is drawn from a non-Gaussian distribution. Two simulations, where the non-Gaussian distribution is modelled as contaminated Gaussian distributions, are performed. It is found that M-estimators are unbiased and could achieve a root-mean-square error smaller than that obtained by the least square (LS) at the cost of a slightly higher computation complexity in a non-Gaussian environment. M-estimators are also applied to the real timing data of PSR J1713+0747. The results have shown that the fitting results of M-estimators are more accurate than those of LS and are closer to the result of very long baseline interferometry.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: data analysis - pulsars: general - pulsars: general

CDS comments: In chap. 6 : PSR J1737+0747 is a misprint for PSR J1713+0747.

Simbad objects: 1

goto Full paper

goto View the references in ADS

Number of rows : 1
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 PSR J1713+0747 Psr 17 13 49.5367813 +07 47 37.450240           ~ 530 1

Query : 2017MNRAS.468.2637W

Basic data :
PSR J1713+0747 -- Pulsar
Other object types: otypes_help 		gam (1FGL,2FGL,...), Psr (2022ApJS,PSR)
ICRS coord. (ep=J2000) : 		17 13 49.5367813 +07 47 37.450240 (Radio) [ 0.01783 0.04 90 ] B 2024MNRAS.530..287S
FK4 coord. (ep=B1950 eq=1950) : 		17 11 24.7239334 +07 51 03.350489 [ 0.01783 0.04 90 ]
Gal coord. (ep=J2000) : 		028.7505531263 +25.2228203646 [ 0.01783 0.04 90 ]
Proper motions mas/yr : 		4.9215 -3.920 [0.0008 0.002 90] C 2023A&A...678A..48E
Parallaxes (mas): 		0.88 [0.1] C 2024MNRAS.530..287S
SIMBAD within arcmin
Overlay Simbad points in this preview
Back
All CDSPortal (CDSPortal)
Send to sendBySAMP sendBySAMP
sedIcon
within arcsec sed-help-icon
notes:

Identifiers (9) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

PSR J1713+0447 3FGL J1714.0+0748 PSR J1713+0747
1FGL J1713.9+0750 4FGL J1713.8+0747 PSR J1713+07
2FGL J1714.0+0751 FL8Y J1713.9+0746 PSR B1711+07

References (530 between 1850 and 2026) (Total 530)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)

Collections of Measurements Description of Measurements

Distance : 2    Plx : 1    PM : 2   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Search by coordinates in Vizier (radius: 5 arcsec)

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

The annotation server is currently not available. Sorry for any inconvenience

To bookmark this query, right click on this link: simbad:objects in 2017MNRAS.468.2637W and select 'bookmark this link' or equivalent in the popup menu