NICER observation list: Target ID 250601
- Proposal Number = 2506
- Target ID = 250601
- Target Name = 1E_1207.4-5209
- Proposal Title = THE EXTRAORDINARY GLITCH BEHAVIOR OF CCO PULSAR 1E 1207.4-5209
- PI = ERIC GOTTHELF
- Proposal Category = X-RAY PULSARS AND NEUTRON STARS
- Cycle number = 2
- Observation Type = NOR
Abstract
We have recently detected a glitch in the spin of 1E 1207.4-5209, the compact central object (CCO) in SNR PKS 1209-51/52. This is entirely unexpected for a pulsar with a spin-down rate as small as those found for CCOs. Even more remarkable is the extreme change in its spin-down rate, which rivals those found for magnetars, NSs with surface magnetic fields 10,000 times greater than the dipole fields inferred for CCOs. The detection of a glitch therefore supports a recent conjecture that they could be triggered by the diffusion of a buried internal field. We propose to continue timing 1E 1207.4-5209, to verify the unexpected large change in its post-glitch spin-down rate.
| Obsid |
RA |
DEC |
l |
b |
Start |
End |
Exposure |
Number of modules |
Status of Processing |
Date of Processing |
Public date |
| 2506010101 |
182.505 |
-52.441 |
296.54590 |
9.91626 |
58577.3446 |
58577.9530 |
19664.29200 |
52 |
VALIDATED |
58582.7 |
58771 |
| 2506010102 |
182.506 |
-52.441 |
296.54671 |
9.91666 |
58577.9889 |
58578.2715 |
4894.00000 |
52 |
VALIDATED |
58582.7 |
58772 |
| 2506010201 |
182.501 |
-52.439 |
296.54316 |
9.91762 |
58683.9379 |
58683.9681 |
2166.00000 |
52 |
VALIDATED |
58688.7 |
58877 |
| 2506010202 |
182.503 |
-52.440 |
296.54428 |
9.91768 |
58684.0025 |
58684.6771 |
18167.00000 |
52 |
VALIDATED |
58690.0 |
58878 |
| 2506010203 |
182.503 |
-52.441 |
296.54460 |
9.91650 |
58687.6187 |
58687.6875 |
273.00000 |
52 |
VALIDATED |
58690.8 |
58881 |
| 2506010204 |
182.503 |
-52.436 |
296.54399 |
9.92168 |
58688.5203 |
58688.5250 |
0.00000 |
0 |
VALIDATED |
58693.6 |
58882 |
| 2506010205 |
182.501 |
-52.439 |
296.54315 |
9.91806 |
58690.5155 |
58690.9104 |
1279.00000 |
52 |
VALIDATED |
58695.9 |
58884 |
| 2506010206 |
182.502 |
-52.439 |
296.54376 |
9.91820 |
58691.0958 |
58691.6211 |
329.00000 |
52 |
VALIDATED |
58695.9 |
58885 |
| 2506010207 |
182.501 |
-52.436 |
296.54264 |
9.92073 |
58692.9029 |
58692.9095 |
227.00000 |
52 |
VALIDATED |
58696.7 |
58886 |
| 2506010208 |
182.503 |
-52.441 |
296.54451 |
9.91594 |
58694.0662 |
58694.0741 |
513.00000 |
52 |
VALIDATED |
58698.6 |
58888 |
| 2506010209 |
182.503 |
-52.441 |
296.54482 |
9.91598 |
58696.5250 |
58696.5318 |
550.00000 |
52 |
VALIDATED |
58700.6 |
58890 |
| 2506010210 |
182.503 |
-52.441 |
296.54487 |
9.91604 |
58697.0336 |
58697.8783 |
2063.00000 |
52 |
VALIDATED |
58701.6 |
58891 |
| 2506010211 |
182.504 |
-52.441 |
296.54538 |
9.91638 |
58698.1248 |
58698.1362 |
42.00000 |
52 |
VALIDATED |
58702.6 |
58892 |
| 2506010212 |
182.504 |
-52.441 |
296.54516 |
9.91616 |
58699.0275 |
58699.9391 |
3992.00000 |
52 |
VALIDATED |
58704.7 |
58893 |
| 2506010213 |
182.504 |
-52.441 |
296.54556 |
9.91602 |
58700.1282 |
58700.4578 |
640.00000 |
52 |
VALIDATED |
58704.8 |
58894 |
| 2506010214 |
182.504 |
-52.441 |
296.54546 |
9.91628 |
58724.2028 |
58724.3352 |
184.00000 |
52 |
VALIDATED |
58735.8 |
58918 |
| 2506010215 |
182.505 |
-52.441 |
296.54575 |
9.91640 |
58725.0417 |
58725.0461 |
203.00000 |
52 |
VALIDATED |
58732.8 |
58919 |
| 2506010216 |
182.505 |
-52.441 |
296.54596 |
9.91628 |
58727.4873 |
58727.9487 |
0.53666 |
52 |
VALIDATED |
58735.9 |
58921 |
| 2506010217 |
182.506 |
-52.441 |
296.54631 |
9.91681 |
58728.0025 |
58728.7241 |
0.00000 |
52 |
VALIDATED |
58735.9 |
58922 |
| 2506010218 |
182.506 |
-52.441 |
296.54628 |
9.91701 |
58729.2275 |
58729.4322 |
0.00000 |
52 |
VALIDATED |
58736.0 |
58923 |
| 2506010219 |
182.505 |
-52.441 |
296.54583 |
9.91629 |
58730.5820 |
58730.9779 |
0.00000 |
52 |
VALIDATED |
58736.1 |
58924 |
| 2506010220 |
182.504 |
-52.442 |
296.54553 |
9.91585 |
58731.1616 |
58731.2369 |
0.00000 |
52 |
VALIDATED |
58736.7 |
58925 |
| 2506010221 |
182.504 |
-52.441 |
296.54537 |
9.91607 |
58732.5809 |
58732.6569 |
0.00000 |
52 |
VALIDATED |
58736.8 |
58926 |
| 2506010222 |
182.504 |
-52.441 |
296.54540 |
9.91628 |
58737.3551 |
58737.3598 |
0.00000 |
50 |
VALIDATED |
58741.6 |
58931 |
| 2506010223 |
182.505 |
-52.446 |
296.54660 |
9.91172 |
58740.8377 |
58740.8433 |
0.00000 |
50 |
VALIDATED |
58745.7 |
58934 |
| 2506010224 |
182.503 |
-52.442 |
296.54477 |
9.91554 |
58741.0287 |
58741.0368 |
0.00000 |
50 |
VALIDATED |
58746.7 |
58935 |
| 2506010225 |
182.504 |
-52.441 |
296.54531 |
9.91605 |
58749.0340 |
58749.8103 |
0.00000 |
50 |
VALIDATED |
58753.6 |
58943 |
| 2506010226 |
182.503 |
-52.440 |
296.54431 |
9.91716 |
58751.0292 |
58751.0372 |
0.00000 |
50 |
VALIDATED |
58756.7 |
58945 |
| 2506010227 |
182.502 |
-52.440 |
296.54424 |
9.91680 |
58762.9650 |
58762.9708 |
0.00000 |
50 |
VALIDATED |
58767.8 |
58956 |
| 2506010228 |
182.502 |
-52.441 |
296.54433 |
9.91630 |
58763.7428 |
58763.9401 |
0.00000 |
50 |
VALIDATED |
58770.8 |
58957 |
| 2506010229 |
182.502 |
-52.441 |
296.54443 |
9.91604 |
58765.2905 |
58765.3722 |
0.00000 |
50 |
VALIDATED |
58770.9 |
58959 |
| 2506010301 |
182.508 |
-52.444 |
296.54833 |
9.91374 |
58787.5657 |
58787.9727 |
0.00000 |
50 |
VALIDATED |
58793.1 |
58981 |
| 2506010302 |
182.508 |
-52.443 |
296.54797 |
9.91440 |
58788.2102 |
58788.9412 |
0.00000 |
50 |
VALIDATED |
58793.6 |
58982 |
| 2506010303 |
182.508 |
-52.444 |
296.54849 |
9.91425 |
58788.9836 |
58789.2644 |
0.00000 |
50 |
VALIDATED |
58795.1 |
58983 |
| 2506010304 |
182.504 |
-52.441 |
296.54532 |
9.91633 |
58806.1998 |
58806.2112 |
215.00000 |
52 |
VALIDATED |
58812.6 |
59000 |
| 2506010305 |
182.504 |
-52.441 |
296.54525 |
9.91602 |
58808.8505 |
58808.9236 |
0.00000 |
49 |
VALIDATED |
58822.9 |
59002 |
| 2506010306 |
182.504 |
-52.441 |
296.54526 |
9.91598 |
58810.3344 |
58810.3414 |
0.00000 |
50 |
VALIDATED |
58816.0 |
59004 |
| 2506010307 |
182.504 |
-52.441 |
296.54532 |
9.91596 |
58812.3330 |
58812.8565 |
89.00000 |
50 |
VALIDATED |
58817.0 |
59006 |
| 2506010308 |
182.504 |
-52.442 |
296.54539 |
9.91555 |
58813.0405 |
58813.6968 |
722.00000 |
50 |
VALIDATED |
58817.7 |
59007 |
| 2506010309 |
182.505 |
-52.443 |
296.54604 |
9.91465 |
58816.2683 |
58816.2713 |
0.00000 |
50 |
VALIDATED |
58822.0 |
59010 |
| 2506010401 |
182.505 |
-52.441 |
296.54568 |
9.91605 |
58816.8488 |
58816.8524 |
118.00000 |
50 |
VALIDATED |
58822.1 |
59010 |
| 2506010402 |
182.504 |
-52.443 |
296.54583 |
9.91479 |
58817.3648 |
58817.8850 |
274.00000 |
50 |
VALIDATED |
58822.9 |
59011 |
| 2506010403 |
182.505 |
-52.442 |
296.54587 |
9.91494 |
58818.2026 |
58818.7239 |
164.00000 |
50 |
VALIDATED |
58823.0 |
59012 |
| 2506010404 |
182.505 |
-52.442 |
296.54578 |
9.91548 |
58819.2372 |
58819.2449 |
0.00000 |
50 |
VALIDATED |
58824.7 |
59013 |
| 2506010405 |
182.504 |
-52.442 |
296.54540 |
9.91512 |
58820.4634 |
58820.4704 |
0.00000 |
50 |
VALIDATED |
58824.8 |
59014 |
| 2506010406 |
182.503 |
-52.441 |
296.54477 |
9.91627 |
58827.7016 |
58827.8349 |
0.00000 |
52 |
VALIDATED |
58831.6 |
59021 |
| 2506010407 |
182.502 |
-52.441 |
296.54444 |
9.91601 |
58837.3056 |
58837.3122 |
0.00000 |
52 |
VALIDATED |
58856.9 |
59031 |
| 2506010408 |
182.500 |
-52.438 |
296.54242 |
9.91908 |
58839.3565 |
58839.4947 |
1530.00000 |
52 |
VALIDATED |
58843.6 |
59033 |
| 2506010409 |
182.499 |
-52.437 |
296.54191 |
9.91947 |
58840.7113 |
58840.7864 |
1281.00000 |
52 |
VALIDATED |
58844.7 |
59034 |
| 2506010410 |
182.504 |
-52.441 |
296.54562 |
9.91607 |
58859.7148 |
58859.8489 |
1093.00000 |
52 |
VALIDATED |
58863.7 |
59053 |
| 2506010411 |
182.506 |
-52.444 |
296.54699 |
9.91310 |
58862.4917 |
58862.5638 |
160.00000 |
52 |
VALIDATED |
58867.7 |
59056 |
| 2506010412 |
182.503 |
-52.441 |
296.54482 |
9.91598 |
58873.4086 |
58873.4178 |
562.00000 |
52 |
VALIDATED |
58878.7 |
59067 |
| 2506010413 |
182.504 |
-52.442 |
296.54548 |
9.91579 |
58885.2639 |
58885.2694 |
342.00000 |
52 |
VALIDATED |
58889.6 |
59079 |
| 2506010414 |
182.504 |
-52.442 |
296.54567 |
9.91576 |
58893.2732 |
58893.2762 |
218.00000 |
52 |
VALIDATED |
58900.7 |
59087 |
| 2506010415 |
182.503 |
-52.441 |
296.54485 |
9.91651 |
58895.2125 |
58895.4032 |
415.00000 |
52 |
VALIDATED |
58900.9 |
59089 |
| 2506010416 |
182.504 |
-52.441 |
296.54510 |
9.91618 |
58896.1068 |
58896.9576 |
3221.00000 |
52 |
VALIDATED |
58901.7 |
59090 |
| 2506010417 |
182.504 |
-52.441 |
296.54501 |
9.91633 |
58897.0104 |
58897.9903 |
4276.00000 |
52 |
VALIDATED |
58901.7 |
59091 |
| 2506010418 |
182.502 |
-52.440 |
296.54422 |
9.91692 |
58898.1076 |
58898.8940 |
5850.00000 |
52 |
VALIDATED |
58904.0 |
59092 |
| 2506010419 |
182.503 |
-52.440 |
296.54455 |
9.91683 |
58899.0114 |
58899.7977 |
2867.00000 |
52 |
VALIDATED |
58904.1 |
59093 |
| 2506010420 |
182.504 |
-52.439 |
296.54467 |
9.91834 |
58900.2389 |
58900.2426 |
124.00000 |
0 |
VALIDATED |
58904.7 |
59094 |
| 2506010421 |
182.503 |
-52.440 |
296.54442 |
9.91685 |
58905.3356 |
58905.6794 |
1775.00000 |
52 |
VALIDATED |
58912.0 |
59099 |
| 2506010422 |
182.502 |
-52.439 |
296.54398 |
9.91839 |
58906.5014 |
58906.8326 |
450.00000 |
52 |
VALIDATED |
58912.1 |
59100 |
| 2506010423 |
182.502 |
-52.438 |
296.54336 |
9.91944 |
58907.2090 |
58907.2206 |
884.00000 |
52 |
VALIDATED |
58912.2 |
59101 |