CHAMPSS Pulsar Discoveries

This page shows all new pulsars discovered by the CHIME All-sky Multi-day Pulsar Stack Search (CHAMPSS). Tapping off the CHIME/FRB datastream, CHAMPSS performs an FFT-based search for new pulsars, searching individual days and multiday power spectrum stacks. Repeatedly searching the whole northern sky, the aim is to search deeply along under-searched lines of sight, and find intermittent pulsars missed by one-pass surveys (for more details, read our overview paper). The below table will be updated as new pulsars are discovered, and ephemerides added with refined parameters at time of publication. The pulsars from this table are included, and will show up in a query of the Pulsar Survey Scraper.

CHAMPSS Survey Skymap
Name* RA DEC DM Period (s) Frequency (Hz) Date Discovered Date on Website Plots Ephemerides† Notes
J1629+4636 16:29:52.9 +46:36:52 35 0.314056 3.18414 2024-01-08 2024-04-18 J1629+4636 J1629+4636.par Published in [1]
J1802+47 18:02:14.4 +47:16:00 30 0.346624 2.88488 2024-09-05 2024-09-20 J1802+47 J1802+47.par Published in [1], Posted as J1802+4721 by CRAFTS, J1803+47 by Puschino
J1900+5106 19:00:00.9 +51:06:14 71 0.337759 2.96071 2024-07-04 2024-07-04 J1900+5106 J1900+5106.par Published in [1]
J2002+4652 20:02:06.9 +46:52:43 141 0.248260 4.02678 2024-09-05 2024-09-20 J2002+4652 J2002+4652.par Published in [1], Posted as J2002+4653 by CRAFTS
J2100+4711 21:00:13.4 +47:11:15 231 1.458743 0.685200 2023-12-14 2024-04-18 J2100+4711 J2100+4711.par Published in [1], Posted as J2100+4712g by FAST-GPPS 2024-04-16
J2108+5001 21:08:41.9 +50:01:42 482 0.244461 4.09065 2023-12-27 2024-04-18 J2108+5001 J2108+5001.par Published in [1]
J2118+5143 21:18:30.3 +51:43:15 146 0.370223 2.70126 2024-07-04 2024-07-04 J2118+5143 J2118+5143.par Published in [1]
J2151+5128 21:51:46.6 +51:28:49 203 1.051903 0.950664 2024-07-04 2024-07-04 J2151+5128 J2151+5128.par Published in [1]
J2238+5015 22:38:16.5 +50:15:52 28 0.560097 1.78521 2024-07-04 2024-07-04 J2238+5015 J2238+5015.par Published in [1]
J2302+4807 23:02:10.9 +48:07:26 72 0.741974 1.34752 2024-08-20 2024-09-20 J2302+4807 J2302+4807.par Published in [1], Posted as J2301+4809 by CRAFTS, J2302+48 by Puschino
J2319+4919 23:19:14.8 +49:19:09 87 0.544065 1.83834 2024-05-01 2024-05-02 J2319+4919 J2319+4919.par Published in [1]
J1805+46 18:05:34.3 +46:12:51 32 0.349866 2.85824 2025-05-14 2025-06-19 J1805+46
J0434+54 04:34:04.9 +54:42:45 127 1.142952 0.874927 2025-11-19 2025-11-24 J0434+54
J2117+74 21:17:54.2 +74:27:35 55 0.353017 2.832724 2025-11-19 2025-11-24 J2117+74
J2250+69 22:50:55.6 +69:23:33 57 0.245174 4.078743 2025-11-19 2025-11-24 J2250+69
J0101+64 01:02:20.1 +64:30:22 228 0.153651 6.508266 2025-11-19 2025-11-24 J0101+64
J2205+59 22:05:53.7 +59:44:30 298 0.634626 1.575730 2025-12-20 2025-12-21 J2205+59
J1037+39 10:37:16.8 +39:18:00 16 0.65710 1.52185 2025-12-24 2025-12-26 J1037+39
J0916+38 09:16:21.6 +38:30:00 23 0.14975 6.67766 2025-12-26 2025-12-31 J0916+38
J1306+39 13:06:28.1 +39:41:42 28 0.434761 2.300112 2026-01-13 2026-01-14 J1306+39
J1432+30 14:32:48 +30:52:15 19 0.114018 8.770561 2026-01-16 2026-01-16 J1432+30
J2101+38 21:01:17 +38:42:36 132 2.158444 0.463297 2026-01-16 2026-01-16 J2101+38

* Pulsar names are subject to change and will be updated as the pulsar position is refined
† Timing ephemerides correspond to published values, and are not necessarily up to date

List of CHAMPSS Publications:
[1] CHAMPSS Collaboration et al. 2025, "CHIME All-sky Multiday Pulsar Stacking Search (CHAMPSS): System Overview and First Discoveries"