Discovery and timing of the first 8gr8 Cygnus survey pulsars

Free Access

Table 1:

Timing solutions for the three pulsars.
Pulsar name	J1937+2950	J2027+4557	J2047+5029
Fit and data-set
MJD range ..............................	53 463-54 751	53 462-54 751	53 740-54 751
Number of TOAs ..............................	85	89	101
Rms timing residual (ms) ..............................	2.8	0.6	1.3
Weighted fit ..............................	Y	Y	Y
Reduced $\chi^2$ value ..............................	1.2	1.7	5.5
Measured Quantities
Right ascension, $\alpha$ (J2000) ..............................	$19^{\rm h}37^{\rm m}47\hbox{$.\!\!^{\rm s}$ }603(14)$	$20^{\rm h}27^{\rm m}16\hbox{$.\!\!^{\rm s}$ }233(3)$	$20^{\rm h}47^{\rm m}54\hbox{$.\!\!^{\rm s}$ }6400(4)$
Declination, $\delta$ (J2000) ..............................	$+29\hbox{$^\circ$ }50\hbox{$^\prime$ }01\hbox{$.\!\!^{\rm s}$ }8(2)$	$+45\hbox{$^\circ$ }57\hbox{$^\prime$ }57\hbox{$.\!\!^{\prime\prime}$ }08(4)$	$+50\hbox{$^\circ$ }29\hbox{$^\prime$ }38\hbox{$.\!\!^{\prime\prime}$ }17(4)$
Pulse frequency, $\nu$ (s^-1) ..............................	0.603344173844(9)	0.909379126021(5)	2.242431224778(16)
First derivative of pulse frequency, $\dot{\nu}$ (s^-2) ..............................	-1.2672(6) $~\times~10^{-15}$	-2.559(3) $~\times~10^{-16}$	-2.09976(8) $~\times~10^{-14}$
Second derivative of pulse frequency, $\ddot{\nu}$ (s^-3) ..............................			-7.41(8) $~\times~10^{-24}$
Dispersion measure, DM (cm^-3 pc) ..............................	113.80(2)	229.594(11)	107.676(5)
Set Quantities
Epoch of frequency determination (MJD)..............	54 250.0
Epoch of position determination (MJD)...............	54 250.0
Epoch of DM determination (MJD).....................	54 250.0
Derived Quantities
Characteristic age, $\tau$ (Myr) .....................	7.5	56.3	1.7
Surface magnetic field strength, B (10¹² G) ........	2.4	0.6	1.4
Distance, d (kpc) .......................................	5.1(7)	10.5 (7.4-50.0)	4.4(5)
Energy loss, $\dot{E}_{\rm rot}$ (erg s^-1) ............	$3.0~\times~10^{31}$	$9.2~\times~10^{30}$	$1.9~\times~10^{33}$
Energy loss/d², $\dot{E}_{\rm rot}/d^2$ (erg s^-1 kpc^-2)....................	$1.2~\times~10^{30}$	$8.3~\times~10^{28}$	$9.6~\times~10^{31}$
Mean flux density at 328 MHz, (mJy) ............................	8.7(6)	9.1(9)	2.5(3)
Mean flux density at 1380 MHz, (mJy) ...........................	0.08(2)	1.34(13)	0.38(4)
Mean flux density at 2300 MHz, (mJy) ..........................		0.32(9)	0.22(13)
Spectral index.................................................	-3.3(2)	-1.43(9)	-1.39(9)
Assumptions
Clock correction procedure ..................................	TT(TAI)
Solar system ephemeris model ..............................	DE405
Model version number ......................................	5.00

Note. Figures in parentheses are the nominal 1 $\sigma$ TEMPO2 uncertainties in the least-significant digits quoted. The DM distances are estimated from the Cordes & Lazio (2002) model.

Source LaTeX | All tables | In the text

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.