Table 3.
J1455−3330 timing parameters obtained from temponest.
| Observations and data reduction parameters | |
|---|---|
| Timing model | T2 |
| Solar System ephemeris | DE438 |
| Timescale | TT(BIPM2019) |
| Reference epoch for period, position and DM (MJD) | 56893 |
| Solar wind and electron number density, n (cm−3) | 4 |
| Weighted rms residual (μs) | 3.19 |
| Spin and astrometric parameters | |
| Right ascension, α (J2000, h:m:s) | 14:55:47.973129(2) |
| Declination, δ (J2000, d:m:s) | −33:30:46.39040(6) |
| Proper motion in α, μα (mas yr−1) | 7.846(6) |
| Proper motion in δ, μδ (mas yr−1) | −2.02(1) |
| Parallax, ϖ (mas) | 1.11(6) |
| Spin frequency, ν (Hz) | 125.20024512394019(7) |
Spin-down rate,  (10−16 Hz s−1) |
−3.809561(6) |
| Dispersion measure, DM (cm−3 pc) | 13.5699(1) |
| First Derivative of DM, DM1 (10−5 cm−3 pc yr−1) | 5(2) |
| Second Derivative of DM, DM2 (10−6 cm−3 pc yr−1) | 8(3) |
| Derived parameters | |
| Galactic longitude, l (°) | 330.72177524 |
| Galactic latitude, b (°) | 22.56224922 |
| Total proper motion, μT (mas yr−1) | 8.101(6) |
| DM-derived distance (NE2001), d (kpc) | 0.52737 |
| DM-derived distance (YMW16), d (kpc) | 0.68418 |
| Parallax derived distance, d (kpc) | 0.90(5) |
| Parallax derived distance including EDSD prior, dPSR (kpc) | 0.90(5) |
| Spin period, P (ms) | 7.987204809463945(5) |
| Spin period derivative, Ṗ (10−20 s s−1) | 2.430325(4) |
| Total kinematic contribution to Ṗ, Ṗk (10−21 s s−1) | 1.8(1) |
| Intrinsic spin period derivative Ṗint(10−20s s−1) | 2.25(1) |
| Inferred surface magnetic field, Bs(108 G) | ∼4.23 |
| Inferred characteristic age, τc (Gyr) | ∼5.63 |
| Inferred spin-down luminosity, Ė(1033 erg s−1) | ∼1.736(8) |
Notes. Numbers in parentheses are the nominal 1-σ maximum symmetric statistical uncertainties on the last quoted digits. We used the ELL1H model to fit for the Shapiro delay and ẋ. In the second half of the table, we present quantities derived from the fit values. The last three values are calculated from Ṗint after correcting for the kinematic effects.
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