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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)

2013-08-05

Paul

54684

56538  

 

PAR File

Timing Residuals

Phaseogram

J0835-4510 (Vela)

2013-10-24

David

54686.15

56499.16

from Matthew K's pipeline.

PAR File

gamma   radio

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

7-Aug-2013

Max

54682.00

56256.00

Position fixed at Chandra's S20. 2 timing solutions, pre and post "jump" at MJD 55850

PAR File (pre)
PAR File (post)

Timing Residuals (pre)
Timing Residuals (post)

Phaseogram (pre)
Phaseogram (post)

J2021+3651

15-Jul-2012

Matthew

54686

56471

 

PAR File

Timing Residuals

Phaseogram

J2028+3332

11-June-2012

Aous

54695.21

56076.41

 

PAR File

Timing Residuals

Phaseogram

J2030+4415

2013-05-16

Paul

54693

56414 

 

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

2013-05-14

Paul

54702

56404

 

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

2013-05-14

Paul

54700

56116

Only up to MJD56116 because apparent glitch at that point. Work ongoing to get model through glitch.

PAR File

Timing Residuals

Phaseogram

 

 

 

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