LAT Gamma-ray Pulsar Timing Models

Overview

This page is for distribution of pulsar timing models made by the LAT team directly from LAT gamma-ray data, independent of any radio timing data that may exist. We use the methods documented in Ray, Kerr, Parent et al. (2011, ApJS, 194, 17, arXiv:1011.2468). The primary focus is on the blind search pulsars and other pulsars that are not easily timed in the radio or X-ray bands. If you would like a particular pulsar added to this page, please contact us. This work is being supported by the Fermi Cycle 3 Guest Observer program.

You are free to use these LAT timing solutions to fold your data. If you publish work based on these models, please reference Ray, Kerr, Parent et al. (2011) and this page in your publication. The primary intent is to support pulsar analyses requiring timing ephemerides, such as phase-resolved spectroscopy and analyses of sources close to bright pulsars through the use of pulsar `gating'. If, on the other hand, you want to publish something based on the values of the timing model parameters (e.g. timing positions, glitch parameters, etc...) we ask that you contact us first because there may be important caveats or publication plans.

Participants

Paul Ray, Matthew Kerr, Pablo Saz Parkinson, Max Razzano, and others... Thanks much to those who have moved on to other projects, including Damien Parent, Michael Dormody, and Aous Abdo.

Timing Solutions

Note that not all of these pulsar will have up to date models depending on when we last ran them. If you have a need for one, just let us know. Also, be very cautious about applying these models to data outside the START/FINISH range in the PAR file! Many of them will not extrapolate well. Also, beware that we don't typically follow any particular absolute phase convention in these models since they are gamma-ray only. In particular, you cannot assume that phase 0.0 is at the peak of the radio pulse (if there is one) or any other particular convention. If you need to figure out phase ranges to blank, fold the data using the PAR file and make your selection based on that, not a phase range from a published paper or other source.

The LAT solutions can be used with the Fermi plugin available in the TEMPO2 distribution. This is generally the preferred method as the Fermi ScienceTool gtpphase doesn't support the full complexity of many timing models.

Pulsars timed with the Fermi-LAT

Pulsar Name	Update Date	By	Start (MJD)	Finish (MJD)	Notes	Timing File	Rediduals	Phaseogram
J0007+7303	9-Feb-2012	Paul	54686.37	55421.29	Two overlapping timing models	PAR File	Timing Residuals	Phaseogram
J0007+7303	9-Feb-2012	Paul	55010.80	55961.10	Will try to merge into one later	PAR File	Timing Residuals	Phaseogram
J0106+4855	6-June-2012	Aous	54695.16	56071.43	Found Radio PSR (GBT 820 MHz)	PAR File	Timing Residuals	Phaseogram
J0205+6449						PAR File	Timing Residuals	Phaseogram
J0357+3205	2013-05-10	Paul	54695	56408		PAR File	Timing Residuals	Phaseogram
J0622+3749	6-June-2012	Aous	54697.88	56068.71		PAR File	Timing Residuals	Phaseogram
J0633+0632	2013-05-10	Paul	54697	56406		PAR File	Timing Residuals	Phaseogram
J0633+1746 (Geminga)	2013-02-05	Paul	54684	56326		PAR File	Timing Residuals	Phaseogram
J1022-5746 / J1023-5746	29-Sep-2011	Damien	54691.24	55824.21	This is the 2PC model	PAR File	Timing Residuals	Phaseogram
J1044-5737	2013-03-07	Paul	54682	56346		PAR File	Timing Residuals	Phaseogram
J1124-5916	1-Nov-2011	Paul	54682.00	55191.00		PAR File	Timing Residuals	Phaseogram
J1124-5916	1-Nov-2011	Paul	55191.00	55800.00		PAR File	Timing Residuals	Phaseogram
J1135-6055	2013-03-08	Paul	54682	56347		PAR File	Timing Residuals	Phaseogram
J1413-6205	5-June-2012	Aous	54695.15	56070.40		PAR File	Timing Residuals	Phaseogram
J1418-6058	7-June-2012	Aous	54695.14	55828.23		PAR File	Timing Residuals	Phaseogram
J1429-5911	13-June-2012	Aous	54682.65	56056.92		PAR File	Timing Residuals	Phaseogram
J1459-6053	2013-03-08	Paul	54682	56347		PAR File	Timing Residuals	Phaseogram
J1620-4927	2013-03-08	Paul	54682	56345		PAR File	Timing Residuals	Phaseogram
J1732-3131	2013-05-13	Paul	54694	56412		PAR File	Timing Residuals	Phaseogram
J1741-2054	7-June-2012	Aous	54690.32	56072.62	Found Radio PSR (Parkes Multibeam)	PAR File	Timing Residuals	Phaseogram
J1746-3239	2013-03-11	Paul	54682	56344		PAR File	Timing Residuals	Phaseogram
J1747-2958	4-Oct-2011	Damien	54693.30	55822.14		PAR File	Timing Residuals	Phaseogram
J1803-2149	2013-03-18	Paul	54693	56349		PAR File	Timing Residuals	Phaseogram
J1809-2332	2013-05-13	Paul	54692	56414		PAR File	Timing Residuals	Phaseogram
J1813-1246	4-Oct-2011	Damien	54692.79	55827.90	One or two glitches likely one glitch the GLF2_2 in the timing solution is probably a typo	PAR File	Timing Residuals	Phaseogram
J1826-1256	8-June-2012	Aous	54692.24	56066.00		PAR File	Timing Residuals	Phaseogram
J1833-1034					Paul requested from Fernando. He says 'next week' as of 2012 Feb 8.	PAR File	Timing Residuals	Phaseogram
J1836+5925	2013-05-13	Paul	54692	56415		PAR File	Timing Residuals	Phaseogram
J1846+0919	8-June-2012	Aous	54697.27	56071.32		PAR File	Timing Residuals	Phaseogram
J1907+0602	24-Jan-2011	Aous	54682.66	55928.34	Found Radio PSR (AO L-band)	PAR File	Timing Residuals	Phaseogram
J1954+2836	4-Oct-2011	Pablo	54682.00	55800.00		PAR File	Timing Residuals	Phaseogram
J1957+5036/J1957+5033	4-Oct-2011	Pablo	54582.00	55800.00		PAR File	Timing Residuals	Phaseogram
J1958+2846	4-Oct-2011	Pablo	54582.00	55800.00		PAR File	Timing Residuals	Phaseogram
J2021+4026	5-Jul-2012	Max	54682.00	56040.00	Keep previous position (see Chandra paper). Whitening using waves	PAR File	Timing Residuals	Phaseogram
J2028+3332	11-June-2012	Aous	54695.21	56076.41		PAR File	Timing Residuals	Phaseogram
J2030+4415	11-June-2012	Aous	54693.81	56077.81		PAR File	Timing Residuals	Phaseogram
J2032+4127	2013-05-13	Paul	54688	56418	Found Radio PSR (S-band GBT 1-hour)	PAR File	Timing Residuals	Phaseogram
J2055+2539	2013-05-13	Paul	54693	56413		PAR File	Timing Residuals	Phaseogram
J2111+4606	7-Feb-2012	Paul	54689.59	55814.35		PAR File	Timing Residuals	Phaseogram
J2139+4716	29-Sep-2012	Max	54717.66	55783.01		PAR File	Timing Residuals	Phaseogram
J2229+6114	9-Feb-2012	Matthew	54589.66	55266.75	Solutions overlap	PAR File	Timing Residuals	Phaseogram
J2229+6114	9-Feb-2012	Matthew	55149.19	55808.57	Solutions overlap	PAR File	Timing Residuals	Phaseogram
J2238+5903	1-Oct-2011	Max	54682.00	55792.24		PAR File	Timing Residuals	Phaseogram

Radio/X-ray Selected Pulsars that the LAT can do a better job on

Pulsar Name	Comments
J0205+6449	in 3C 58
J0835-4510	Vela
J1124-5916
J2021+3651	Dragonfly
J2229+6114	in Boomerang

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Child pages

Overview

Participants

Timing Solutions

Pulsars timed with the Fermi-LAT

Radio/X-ray Selected Pulsars that the LAT can do a better job on