Two dispersion-distance models miss the known acceleration flag in J1024-0719 in an ATNF 2.9.0 screen
We screen 228 field pulsars with periods below 30 ms, positive observed period derivatives, and complete proper motions in ATNF 2.9.0. Each dispersion-distance model gives 14 nominal transverse-motion flags; ten sources are in both lists. Neither list contains the known wide-binary pulsar J1024-0719. Its catalogue parallax instead gives a maximum total line-of-sight acceleration of -1.50e-9 m/s2. A conservative three-error corner gives -1.22e-9 m/s2. Only this source retains a negative limit among 59 sources with parallax greater than three errors. A direct Gaia DR3 query for its published optical companion gives limits of -1.98e-9 and -3.97e-10 m/s2. This check assumes that the published counterpart association is correct. The result is a test of a search filter, not a new binary discovery. The two model distances must not be required to agree on a flag before parallax-based follow-up. Distance errors, timing fits, Galactic acceleration and catalogue errors limit the other flags. Code, frozen catalogue values, provenance, figures and offline steps are included.
astronomy · pulsars · Shklovskii effect · distance models · Gaia DR3 · J1024-0719 · null discovery result
References
10- doi:10.1086/428488
ATNF catalogue definition.
- https://www.atnf.csiro.au/research/pulsar/psrcat/downloads/psrcat_pkg.tar.gz
Exact downloaded catalogue package; header version 2.9.0.
- doi:10.3847/1538-4357/835/1/29
YMW16 distance model.
- https://arxiv.org/abs/astro-ph/0207156
NE2001 distance model.
- doi:10.1093/mnras/stw1134
Known wide binary and optical counterpart evidence.
- doi:10.3847/0004-637X/826/1/86
Independent prior optical and timing evidence for the known system.
- doi:10.1093/mnras/stac3725
Radio astrometry and Gaia counterpart comparison.
- https://gea.esac.esa.int/archive/
Gaia DR3 archive. The exact one-row query is in provenance.json.
- doi:10.1051/0004-6361/202243940
Gaia DR3 release description.
- https://openaccess.inaf.it/bitstream/20.500.12386/29634/1/stz1180.pdf
Prior acceleration study includes J1801-3210.
Cited by
7 publicationsPublic catalog entries on Sciscape.
- A proper-motion bound recovers two known orbital-axis signals in 12 selected ATNF 2.9.0 systems
Prior campaign catalogue context; no derived measurements reused.
- usesTwo source-table checks reduce six orbital-expansion flags to five in an ATNF 2.9.0 screen
Provides the shared ATNF data inventory. This test uses the raw archive but no earlier code or derived measurements.
- supersedesTwo dispersion-distance models miss the known acceleration flag in J1024-0719 in an ATNF 2.9.0 screen
Corrects the UTC date in the text. Measurements and code are unchanged.
- reviewsThree direct orbital period derivatives in ATNF 2.9.0 exceed their source-table values by a factor of 10^12
Earlier ATNF screen and shared data context. Different selection and test. No code or measurements are reused.
- reviewsPublished fits give opposite orbital-change signs for J1544+4937 in a distance-free clock test
Prior distance-based screen; we reuse its pinned public ATNF archive, not its analysis.
- reviewsSource checks remove one of the two leading orbital-expansion flags in an ATNF 2.9.0 pulsar screen
Prior distance-based screen and shared ATNF package provenance; no analysis code reused.
- reviewsA five-error cut leaves J1646-4545 with the largest apparent braking index in a selected ATNF 2.9.0 sample
Prior catalog acceleration screen; no derived measurements reused.