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Table 3.
Timing solution of PSR J1952+2630 with DDGR and ELL1H+ models.
| PSR J1952+2630 | ||
|---|---|---|
| Binary model | DDGR | ELL1H+ |
| Observation and data reduction parameters | ||
| Reference epoch (MJD) | 55407.0 | 55407.0 |
| Span of timing data (MJD) | 55407.146–59554.385 | 55407.146–59554.385 |
| Solar system ephemeris | DE436 | DE436 |
| Terrestrial time standard | UTC(NIST) | UTC(NIST) |
| Time units | TDB | TDB |
| Number of ToAs | 1475 | 1475 |
| Weighted residual RMS (μs) | 24.201 | 24.198 |
| χ2 | 1466.43 | 1466.10 |
| Reduced χ2 | 1.0065 | 1.0069 |
| Astrometric and spin parameters | ||
| Right Ascension, α (J2000) | 19:52:36.840244(57) | 19:52:36.8402341(58) |
| Declination, δ (J2000) | 26:30:28.0840(11) | 26:30:28.0843(11) |
| Proper motion in α, μα (mas yr−1) | −2.58(17) | −2.57(17) |
| Proper motion in δ, μδ (mas yr−1) | −5.29(24) | −5.38(25) |
| Spin frequency, ν (Hz) | 48.2337753923167(47) | 48.2337753923193(49) |
Spin frequency derivative,  (10−15Hz s−1) |
−9.93790(9) | −9.93791(9) |
| Dispersion Measure, DM (pc cm−3) | 315.3168(17) | 315.3166(17) |
| Binary parameters | ||
| Orbital period, Pb (days) | 0.39188050(21) | 0.391878632876(93) |
| Projected semi-major axis, xp (lt-s) | 2.7981770(18) | 2.7981793(49) |
| Orbital eccentricity, e | 4.226(99) × 10−5 | ... |
| Longitude of periastron, ω (deg) | 289.56(1.64) | ... |
| Epoch of periastron, T0 (MJD) | 55407.6178(18) | ... |
| Epoch of ascending node, Tasc (MJD) | ... | 55407.3025831(1) |
| ϵ1 | ... | −0.000039(2) |
| ϵ2 | ... | 0.000013(1) |
Advance of periastron,  (deg/yr) |
[1.5998941] | 1.80(26) |
| Shapiro shape, s = sin i | [0.9495500] | ... |
| Orbital period derivative, Ṗb (10−12 s s−1) | [−0.0943648] | −0.096(46) |
| Orthometric ratio, ς | ... | 0.722852 (a) |
| Orthometric amplitude, h3, (μs) | ... | 1.49(61) |
| Total binary mass, MT (M⊙) | 2.19(38) | [2.61 ] |
| Companion mass, Mc (M⊙) | 0.95(12) | ... |
| Derived parameters | ||
| Galactic longitude, l (deg) | 63.254 | 63.254 |
| Galactic latitude, b (deg) | −0.376 | −0.376 |
| DM derived distance from NE2001 model (kpc) | 9.5647 | 9.5647 |
| DM derived distance from YMW16 model (kpc) | 10.03 | 10.03 |
| Galactic height, z (kpc) | −0.063(12) | −0.063(12) |
| Magnitude of total proper motion, μ (mas yr−1) | 5.89(23) | 5.96(24) |
| Transverse velocity (b), vT (km s−1) | 267(53) | 270(54) |
| Spin period, P (s) | 0.020732360091375(2) | 0.020732360091373(2) |
| 1st Spin period derivative, Ṗ (10−18 s s−1) | 4.27162(4) | 4.27162(4) |
| Intrinsic spin period derivative, Ṗ (10−18) | 4.270(3) | 4.270(3) |
| Characteristic age, τc (Myr) | 76.91 | 76.92 |
| Surface magnetic field, Bs (109 G) | 9.49 | 9.49 |
| Spin-down energy, Ė (1033 erg s−1) | 18.92 | 18.92 |
| Kinematic contribution to Ṗb (10−15 s s−1) | 1.8 |
2.5 |
| Mass function, f(Mp) (M⊙) | 0.15317962(43) | 0.15318146(81) |
| Pulsar mass, Mp (M⊙) | 1.24(26) | ... |
| Einstein delay, γ (s) | 2 × 10−7 | ... |
| Relativistic orbital deformation, δθ (10−6) | 4.674351 | ... |
| Relativistic orbital deformation, δr (10−6) | 4.4226831 | ... |
Notes. Values in brackets are 1σ uncertainties, and values without uncertainties are derived from the corresponding binary model. Values in square brackets are not fit, but derived assuming GR.
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