SIMBAD references

2025ApJ...990L..49D - Astrophys. J., 990, L49 (2025/September-2)

CHIME/Fast Radio Burst/Pulsar Discovery of a Nearby Long-period Radio Transient with a Timing Glitch.

DONG F.A., CLARKE T.E., CURTIN A., KUMAR A., MCKINVEN R., SHIN K., STAIRS I., BRAR C., BURDGE K., CHATTERJEE S., COOK A.M., FONSECA E., GAENSLER B.M., HESSELS J.W., KASPI V.M., LAZDA M., MAIN R., MASUI K.W., McKEE J.W., MEYERS B.W., PEARLMAN A.B., RANSOM S.M., SCHOLZ P., SMITH K.M. and TAN C.M.

Abstract (from CDS):

We present the discovery of a 421 s long period transient using the CHIME telescope, CHIME J0630+25. The source is localized to R.A. = 06:30:38.4 $\pm 1^{\prime} $ decl. = 25:26:23 $\pm 1^{\prime} $ using voltage data acquired with the CHIME baseband system. A timing analysis shows that a model including a glitch is preferred over a nonglitch model with dF/F = 1.3 × 10–6, consistent with other glitching neutron stars. The timing model suggests a surface magnetic field of ∼1.5 × 1015 G and a characteristic age of ∼1.28 × 106 yr. A separate line of evidence to support a strong local magnetic field is an abnormally high rotation measure of RM = -347.8(6) rad m–2 relative to CHIME J0630+25's modest dispersion measure of 22(1) pc cm–2, implying a dense local magneto-ionic structure. As a result, we believe that CHIME J0630+25 is a magnetized, slowly spinning, isolated neutron star. This marks CHIME J0630+25 as the longest period neutron star and the second-longest period neutron star with an inferred magnetar-like field. Based on dispersion measure models and comparison with pulsars with distance measurements, CHIME J0630+25 is located at a nearby distance of 170${}_{-100}^{+310}$ pc (95.4%), making it an ideal candidate for follow-up studies.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Radio pulsars - Neutron stars - Compact objects - Transient sources - Transient detection

Simbad objects: 26

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