Everything is (will be) explained in the memo, titled "Radio Pulsar Timing for Fermi: The Second Half-decade". This page houses the lists referred to in the memo (see Table, below).
Lucas documents his recent folding of >800 PKS JBO NAN pulsars at https://confluence.slac.stanford.edu/display/SCIGRPS/PSUE+-+July+2013 and in particular, Dave S reads results_wSearchPulsation.xls into BigFile to make the memo plots and tables for all >2000 known pulsars.
For context, you should read https://confluence.slac.stanford.edu/display/GLAMCOG/Pulsar+Timing and https://confluence.slac.stanford.edu/display/GLAMCOG/Year+2+Pulsar+Timing .
Here are our milestones:
- Draft zero to co-authors Lucas, Matthew K, and DJT, 25/10.
- Version to radio principals Johnston, Manchester, Stappers, Kramer, Cognard the week after.
- Nançay "every six months" proposal deadline, 5/11. In the past it has evolved little or slowly from proposal to proposal. This year we may make more substantial changes.
- Discuss with Galactic group, PTC, and PSC in mid-November.
- Parkes proposal deadline is 15/12. We (=LAT. PKS may think otherwise) are proposing a) all MSPs, please ; b) drop Edot > 1E34 pulsars showing no hint of gammas after 5 years ; c) maybe drop pulsars that can be observed by Northern telescopes ; d) add some low Edot pulsars, especially in the Deathline Edot range ; e) add a smattering of e.g. interpulse pulsars ; pulsars spatially co-located with weak Fermi DC sources.
Have a nice day.
File name |
Purpose |
Cuts |
N pulsars |
|---|---|---|---|
Folded 5 years, never a hint of pulsations. |
Edot > 1E34, HTS < 20 |
62 south, 68 north |
|
Track down stragglers, including MSPs |
Edot > 1E34 but no .par file. |
51 boil down to 24 boil down to 19 |
|
Unfolded MSPs |
All Edot. P0 < 20 ms. |
11 (36) south, 3 (57) north (note a) |
|
Lucas phase-folding of >800 pulsars |
Anything we can get our hands on. |
805 includes 2PC, misses some GBT, RXTE |
|
Focus on the deathline region |
1E33 < Edot < 1E34, dec < -35, abs(b) > 3, Dist1 < 5 |
37 south, 12 north |
|
Spatial coincidences with weak LAT sources |
angsep < error ellipse |
~30 boil down to ~10 |
|
Buy some more lottery tickets |
(note b) |
111 south, 88 north |
|
Not much -- only one or three not phase-folded. |
Not MSP, with radio interpulse |
27 boils down to <4 |
Notes: a) 11 (3) is the number in ATNF with a pre-launch reference date, and 36 (57) is the number of known MSPs that the LAT team hasn't folded. The difference is due to PSC etc recent discoveries, where either a timing model good enough for gamma folding doesn't exist yet ; or the discovers prefer to do it independently of the LAT team.
b) Cuts for the WeakNearOffPlane sample:
if psr['EDOT'] < 1.E33 :
if psr['DECJD'] < -35. : (For North, invert)
if psr['PeakHTS'] == '*' and psr['PSR_Code'] == '*' and psr['TRES'] == '*' and len(psr['PSRJ']) < 11 and psr['P0'] > 0.01:
"Lucas folded" "not gamma detected" "not other folded" "not globular" "MSP"
if abs(psr['Gb']) > 3. and psr['DIST1'] < 3. :
"off plane" "nearby"