Table 1
Timing parameters of RRAT J1819 − 1458.
| Parameters | Values | |
|
|
||
| RA (J2000) | 18:19:34.173 | |
| Dec (J2000) | −14:58:03.57 | |
| Frequency ν (Hz) | 0.234565100209(7) | |
Frequency derivative  (Hz s-1) |
−3.09123(2) × 10-14 | |
| Epoch (MJD) | 54 321 | |
| Dispersion measure DM (pc cm-3) | 195.7(3) | |
| Time span (MJD) | 54200.1–55299.0 | |
| Residual rms σ (ms) | 7 | |
| Fundamental frequency wave_om | 0.00437 | |
| Number of sinusoids nH | 13 | |
Notes. Numbers in parentheses are uncertainties in the last digits, which are ten times the tempo2 standard errors. The position of J1819 − 1458 is from Rea et al. (2009), of which errors are 0.28 arcsec in both coordinates. With TOAs in the bottom and top residual bands increased and decreased by 45 ms, respectively, σ is calculated by fitting the parameters using the tempo2 parameter wave_om to whiten the timing residuals.
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