Another Astro- News

X-Ray Source SCO X-1

as a TNO Occultation Survey Target

Pingshien 051201

Outline

• Occultation

• RXTE and SCO X-1

• Analyze

• Results

• Problem

• Future work

Occultation

RXTE

SourceTotal(cts

/s)<3.25k

eV<4.25k

eV<5.75k

eV<8.75k

eV<12.25keV

Sco X-1 109830 25850 47280 76240 96630 106030

Crab 16570 3300 5970 9180 12800 14780

Cyg X-1 8380 1290 2450 3990 5930 7120

A0620 143640 80550 112190 132060 141280 143090

The instrumental properties of the PCA ：

Energy range ： 2-60KeV

Energy resolution ： < 18% at 6 KeV

Time resolution ： 1 microsec

Spatial resolution ： collimator with 1 degree FWHM

Collecting area ： 7000 square cm

SCO X-1

• Sco X-1, the first cosmic X-ray source (other than the Sun) ever detected, was discovered on June 18, 1962 .

• RA,DEC : 16 19 55.07, -15 38 24.8 (J2000)• Distance: 2.8+-0.3kpc• Orbital period: 18.9 hr• Inclination angle: 40o +- 6o

• Luminosity: 2.3 X 1038 ergs s-1

• Mass: 1.4M and 0.42M

PrNb Date_Start Date_end Time(s) Use-PCA-Mode Find Event

10056

1996/05/25

1996/05/28

63826B_125US_1M_0_87_

H8

10061

1996/05/24

1996/05/25

5254B_125US_1M_0_87_

H3

　 1997/03/15

1997/03/15

9604B_125US_1M_0_87_

H4

　 1998/01/02

1998/01/02

9362B_125US_1M_0_87_

H　

20053

1997/04/18

1997/04/24

68067B_250US_2A_0_49_

H10

　 1998/01/03

1998/01/08

38932B_250US_2A_0_49_

H7

20426

1997/08/03

1997/08/04

6782B_250US_2A_0_49_

H1

　 1997/08/22

1997/08/22

4549 B_250US_2A_0_49_

H1

30035

1998/05/30

1998/06/02

28143B_250US_2A_0_49_

H7

　 1999/01/06

1999/01/06

638 B_250US_2A_0_49_

H　

30036

1999/01/06

1999/01/08

6424 B_250US_2A_0_49_

H2

40020

1999/01/08

1999/01/09

23726B_125US_1M_0_87_

H2

40706

1999/06/10

1999/06/13

42078 B_250US_2A_0_49_

H　

70014

2002/03/15

2002/03/15

4592B_250US_1M_0_249

_H1

　 2002/05/15

2002/05/16

9200 B_250US_1M_0_249

_H1

70015

2002/05/19

2002/05/19

1376 B_250US_2A_8_39_

H　

RXTE Data I use

10056-01-01-00 1996/05/25 05:06:24 1996/05/25 08:38:06 75618323 75630848 7719 B_125US_1M_0_87_H10056-01-01-01 1996/05/25 09:26:24 1996/05/25 10:14:06 75633923 75636624 2697 B_125US_1M_0_87_H 110056-01-01-02 1996/05/27 09:30:24 1996/05/27 11:19:06 75806963 75813476 4079 B_125US_1M_0_87_H10056-01-01-03 1996/05/25 11:08:28 1996/05/25 13:00:06 75640063 75646735 3880 B_125US_1M_0_87_H10056-01-02-00 1996/05/25 20:49:20 1996/05/25 23:02:06 75675718 75682726 2392 B_125US_1M_0_87_H 110056-01-02-01 1996/05/26 00:06:24 1996/05/26 02:12:06 75687642 75694265 1916 B_125US_1M_0_87_H10056-01-02-02 1996/05/26 03:02:24 1996/05/26 05:25:06 75697283 75705788 5470 B_125US_1M_0_87_H10056-01-02-03 1996/05/26 06:16:32 1996/05/26 09:46:06 75708931 75721501 7756 B_125US_1M_0_87_H10056-01-02-04 1996/05/26 11:11:36 1996/05/26 12:58:06 75726650 75733018 3592 B_125US_1M_0_87_H10056-01-03-00 1996/05/26 21:17:14 1996/05/26 23:01:06 75762989 75769197 1628 B_125US_1M_0_87_H 210056-01-03-01 1996/05/27 06:04:16 1996/05/27 08:06:06 75794704 75801904 4808 B_125US_1M_0_87_H10056-01-03-02 1996/05/27 00:05:20 1996/05/27 02:14:06 75774064 75780720 3338 B_125US_1M_0_87_H10056-01-03-03 1996/05/27 03:06:24 1996/05/27 03:34:06 75783923 75785585 1150 B_125US_1M_0_87_H 110056-01-04-00 1996/05/27 20:48:16 1996/05/27 23:02:06 75848384 75855664 2650 B_125US_1M_0_87_H10056-01-04-01 1996/05/28 00:04:16 1996/05/28 03:20:32 75860508 75871171 5059 B_125US_1M_0_87_H 310056-01-05-00 1996/05/28 11:11:04 1996/05/28 14:23:06 75899467 75910923 5692 B_125US_1M_0_87_H10061-01-01-00 1996/05/24 20:48:32 1996/05/24 23:01:06 75589076 75596276 2536 B_125US_1M_0_87_H 210061-01-01-01 1996/05/25 00:07:28 1996/05/25 03:06:06 75601199 75611103 2718 B_125US_1M_0_87_H 110061-01-02-00 1997/03/15 18:23:28 1997/03/15 23:07:06 101067760 101084760 9604 B_125US_1M_0_87_H 410061-01-03-00 1998/01/02 14:54:22 1998/01/02 18:56:04 126370420 126384900 9362 B_125US_1M_0_87_H20053-01-01-00 1997/04/18 15:20:22 1997/04/18 19:32:06 103994380 104009310 9312 B_250US_2A_0_49_H20053-01-01-01 1997/04/19 04:23:34 1997/04/19 07:59:06 104041370 104054280 7872 B_250US_2A_0_49_H20053-01-01-02 1997/04/20 18:34:32 1997/04/20 22:16:06 104179340 104192100 6097 B_250US_2A_0_49_H 120053-01-01-03 1997/04/21 20:11:02 1997/04/22 00:04:06 104271820 104284970 7282 B_250US_2A_0_49_H 120053-01-01-04 1997/04/22 15:23:58 1997/04/22 19:35:06 104340230 104355110 9408 B_250US_2A_0_49_H 420053-01-01-05 1997/04/23 13:49:02 1997/04/23 21:12:06 104420910 104447300 15014 B_250US_2A_0_49_H 220053-01-01-06 1997/04/24 12:13:44 1997/04/24 19:02:06 104501600 104526060 13082 B_250US_2A_0_49_H 220053-01-02-00 1998/01/03 22:53:20 1998/01/04 04:12:06 126485930 126504660 8961 B_250US_2A_0_49_H 420053-01-02-01 1998/01/04 21:18:24 1998/01/05 02:46:06 126568020 126585900 8914 B_250US_2A_0_49_H20053-01-02-02 1998/01/06 02:12:16 1998/01/06 02:37:06 126670890 126671760 877 B_250US_2A_0_49_H20053-01-02-03 1998/01/06 22:56:16 1998/01/07 02:53:06 126745180 126759110 7958 B_250US_2A_0_49_H 120053-01-02-04 1998/01/07 22:57:20 1998/01/08 03:10:06 126831600 126846370 8836 B_250US_2A_0_49_H 220053-01-02-05 1998/01/08 11:46:46 1998/01/08 12:46:06 126877560 126880950 3386 B_250US_2A_0_49_H20426-01-01-00 1997/08/03 23:00:06 1997/08/04 02:48:06 113266760 113280420 6782 B_250US_2A_0_49_H 120426-01-02-00 1997/08/22 02:23:50 1997/08/22 02:59:06 114834190 114836280 2094 B_250US_2A_0_49_H20426-01-02-01 1997/08/22 03:59:50 1997/08/22 04:41:06 114839950 114842400 2455 B_250US_2A_0_49_H 130035-01-01-00 1998/05/30 00:27:48 1998/05/30 07:01:06 139106200 139129190 7624 B_250US_2A_0_49_H 230035-01-02-00 1998/05/31 08:26:48 1998/05/31 08:37:06 139220760 139221350 592 B_250US_2A_0_49_H30035-01-03-00 1998/06/01 02:02:58 1998/06/01 08:37:06 139285060 139307750 11106 B_250US_2A_0_49_H 230035-01-04-00 1998/06/02 02:00:24 1998/06/02 07:01:06 139371450 139388400 8821 B_250US_2A_0_49_H 330035-01-05-00 1999/01/06 00:26:56 1999/01/06 00:50:06 139278990 139279630 638 B_250US_2A_0_49_H30036-01-01-00 1999/01/07 21:21:20 1999/01/07 22:16:06 126825680 126828900 3212 B_250US_2A_0_49_H 130036-01-02-00 1999/01/08 21:22:24 1999/01/08 22:17:04 126912140 126915360 3212 B_250US_2A_0_49_H 140020-01-01-00 1999/01/08 09:39:28 1999/01/08 16:29:08 158405910 158430480 15098 B_125US_1M_0_87_H 140020-01-01-01 1999/01/08 22:04:38 1999/01/09 02:17:08 158450870 158465590 8628 B_125US_1M_0_87_H 140706-01-01-00 1999/06/11 10:12:16 1999/06/11 11:11:08 171713670 171716950 3274 B_250US_2A_0_49_H40706-01-02-00 1999/06/12 08:35:28 1999/06/12 11:08:06 171794160 171803220 6534 B_250US_2A_0_49_H40706-01-03-00 1999/06/13 08:34:24 1999/06/13 11:05:08 171880500 171889440 6336 B_250US_2A_0_49_H40706-02-01-00 1999/06/10 09:13:02 1999/06/10 09:38:08 171623540 171624850 1308 B_250US_2A_0_49_H40706-02-06-00 1999/06/10 23:26:30 1999/06/11 00:17:08 171675820 171676670 846 B_250US_2A_0_49_H40706-02-08-00 1999/06/11 21:48:24 1999/06/11 22:24:08 171756060 171757240 1182 B_250US_2A_0_49_H40706-02-09-00 1999/06/11 20:08:16 1999/06/11 20:49:08 171750010 171751500 1482 B_250US_2A_0_49_H40706-02-10-00 1999/06/11 23:23:30 1999/06/12 02:39:08 171762120 171772680 5115 B_250US_2A_0_49_H40706-02-12-00 1999/06/12 03:48:32 1999/06/12 04:15:08 171776890 171778440 1544 B_250US_2A_0_49_H40706-02-13-00 1999/06/12 05:24:16 1999/06/12 05:51:08 171782640 171784200 1568 B_250US_2A_0_49_H40706-02-14-00 1999/06/12 06:59:28 1999/06/12 07:15:08 171788400 171789250 842 B_250US_2A_0_49_H40706-02-16-00 1999/06/12 13:50:36 1999/06/12 14:24:08 171812990 171814820 1820 B_250US_2A_0_49_H40706-02-17-00 1999/06/12 16:46:24 1999/06/12 17:17:08 171824200 171825370 1161 B_250US_2A_0_49_H40706-02-18-00 1999/06/12 21:44:16 1999/06/12 22:23:08 171842380 171843590 1210 B_250US_2A_0_49_H

Analyze

Observation Analyse and Simulation

EventID Time Significance EventID Time Significance1 10061-01-01-00-B_125us_1M_0_87_H-2ms-1.lc 75589744.73 -8.1 23 20053-01-01-05-B_250us_2A_0_49_H-1ms-1.lc 104423759.9 -7.12 10061-01-01-00-B_125us_1M_0_87_H-2ms-3.lc 75596185.48 -7.9 20053-01-01-05-B_250us_2A_0_49_H-2ms-1.lc 104423759.9 -7.33 10061-01-01-01-B_125us_1M_0_87_H-1ms-3.lc 75607387.36 -8.2 24 20053-01-01-06-B_250us_2A_0_49_H-1ms-3.lc 104516097.1 -94 10056-01-01-01-B_125us_1M_0_87_H-2ms.lc 75636518.11 -7.9 20053-01-01-06-B_250us_2A_0_49_H-2ms-3.lc 104516097.1 -85 10056-01-02-00-B_125us_1M_0_87_H-10ms-2.lc 75681893.98 -6.4 25 20053-01-01-06-B_250us_2A_0_49_H-1ms-4.lc 104521116 -7.6

10056-01-02-00-B_125us_1M_0_87_H-1ms-2.lc 75681893.99 -7 26 20426-01-01-00-B_250us_2A_0_49_H-1ms-3.lc 113274139.9 -7.310056-01-02-00-B_125us_1M_0_87_H-1ms-2.lc 75681893.99 -9.9 20426-01-01-00-B_250us_2A_0_49_H-2ms-3.lc 113274139.9 -7.910056-01-02-00-B_125us_1M_0_87_H-2ms-2.lc 75681893.99 -7 27 20426-01-02-01-B_250us_2A_0_49_H-2ms.lc 114841117 -7.910056-01-02-00-B_125us_1M_0_87_H-5ms-2.lc 75681893.99 -10.4 28 20053-01-02-00-B_250us_2A_0_49_H-1ms-2.lc 126486108.3 -7.7

6 10056-01-03-00-B_125us_1M_0_87_H-1ms-2.lc 75768925.2 -7.6 29 20053-01-02-00-B_250us_2A_0_49_H-1ms-2.lc 126486868.8 -7.110056-01-03-00-B_125us_1M_0_87_H-2ms-2.lc 75768925.2 -9.1 20053-01-02-00-B_250us_2A_0_49_H-2ms-2.lc 126486868.8 -7.2

7 10056-01-03-00-B_125us_1M_0_87_H-1ms-2.lc 75769118.85 -7 30 20053-01-02-00-B_250us_2A_0_49_H-2ms-3.lc 126493468.2 -88 10056-01-03-03-B_125us_1M_0_87_H-1ms-2.lc 75784790.22 -7.3 31 20053-01-02-00-B_250us_2A_0_49_H-2ms-3.lc 126493743.8 -7.39 10056-01-04-01-B_125us_1M_0_87_H-2ms-4.lc 75865556.47 -7.1 32 20053-01-02-03-B_250us_2A_0_49_H-1ms-3.lc 126758318.5 -7.5

10056-01-04-01-B_125us_1M_0_87_H-1ms-4.lc 75865556.48 -8.2 20053-01-02-03-B_250us_2A_0_49_H-2ms-3.lc 126758318.5 -1010 10056-01-04-01-B_125us_1M_0_87_H-1ms-4.lc 75866531.47 -7.9 33 30036-01-01-00-B_250us_2A_0_49_H-1ms.lc 126826278.3 -8.811 10056-01-04-01-B_125us_1M_0_87_H-1ms-5.lc 75870296.15 -7.5 34 20053-01-02-04-B_250us_2A_0_49_H-2ms-1.lc 126833983.4 -7.712 10061-01-02-00-B_125us_1M_0_87_H-1ms-1.lc 101069532.7 -9.2 35 20053-01-02-04-B_250us_2A_0_49_H-2ms-3.lc 126844376.5 -7.2

10061-01-02-00-B_125us_1M_0_87_H-1ms-1.lc 101069532.7 -7.4 36 30036-01-02-00-B_250us_2A_0_49_H-2ms.lc 126914899.4 -7.410061-01-02-00-B_125us_1M_0_87_H-2ms-1.lc 101069532.7 -8.2 37 30035-01-01-00-B_250us_2A_0_49_H-1ms-7.lc 139123117.8 -7

13 10061-01-02-00-B_125us_1M_0_87_H-2ms-3.lc 101079168.6 -8.1 30035-01-01-00-B_250us_2A_0_49_H-2ms-7.lc 139123117.8 -7.114 10061-01-02-00-B_125us_1M_0_87_H-2ms-3.lc 101080221.6 -7.2 38 30035-01-01-00-B_250us_2A_0_49_H-2ms-7.lc 139123549.3 -7.215 10061-01-02-00-B_125us_1M_0_87_H-1ms-3.lc 101081410.9 -9.1 39 30035-01-03-00-B_250us_2A_0_49_H-1ms-6.lc 139300106.2 -8

10061-01-02-00-B_125us_1M_0_87_H-2ms-3.lc 101081410.9 -10.7 30035-01-03-00-B_250us_2A_0_49_H-2ms-6.lc 139300106.2 -8.916 20053-01-01-02-B_250us_2A_0_49_H-1ms-3.lc 104191887.2 -8.4 40 30035-01-03-00-B_250us_2A_0_49_H-1ms-8.lc 139306642.9 -7.4

20053-01-01-02-B_250us_2A_0_49_H-2ms-3.lc 104191887.2 -7.7 30035-01-03-00-B_250us_2A_0_49_H-2ms-8.lc 139306642.9 -7.117 20053-01-01-03-B_250us_2A_0_49_H-1ms-1.lc 104273028.9 -7.3 41 30035-01-04-00-B_250us_2A_0_49_H-1ms-2.lc 139374320 -7.5

20053-01-01-03-B_250us_2A_0_49_H-2ms-1.lc 104273028.9 -7.6 42 30035-01-04-00-B_250us_2A_0_49_H-2ms-3.lc 139377035.8 -7.418 20053-01-01-04-B_250us_2A_0_49_H-1ms-1.lc 104340676.8 -7.3 43 30035-01-04-00-B_250us_2A_0_49_H-1ms-4.lc 139382789.1 -7.1

20053-01-01-04-B_250us_2A_0_49_H-2ms-1.lc 104340676.8 -8.4 44 40020-01-01-00-B_125us_1M_0_87_H-1ms-5.lc 158424953.3 -8.419 20053-01-01-04-B_250us_2A_0_49_H-1ms-2.lc 104349094.7 -7.3 40020-01-01-00-B_125us_1M_0_87_H-2ms-5.lc 158424953.3 -7.1

20053-01-01-04-B_250us_2A_0_49_H-2ms-2.lc 104349094.7 -7.4 45 40020-01-01-01-B_125us_1M_0_87_H-2ms-4.lc 158465382.4 -7.520 20053-01-01-04-B_250us_2A_0_49_H-2ms-3.lc 104353322.2 -7.2 46 70014-01-01-00-B_250us_1M_0_249_H-2ms-2.lc 258776105 -7.521 20053-01-01-04-B_250us_2A_0_49_H-2ms-3.lc 104354428.1 -7.8 47 70014-01-02-01-B_250us_1M_0_249_H-2ms.lc 264201682.6 -722 20053-01-01-05-B_250us_2A_0_49_H-2ms-1.lc 104423594.5 -8.2

47 Found Event

EventID Time Significance EventID Time Significance

1 75589744.73 -8.1 25 104521116 -7.6

2 75596185.48 -7.9 26 113274139.9 -7.9

3 75607387.36 -8.2 27 114841117 -7.9

4 75636518.11 -7.9 28 126486108.3 -7.7

5 75681893.99 -10.4 29 126486868.8 -7.2

6 75768925.2 -9.1 30 126493468.2 -8

7 75769118.85 -7 31 126493743.8 -7.3

8 75784790.22 -7.3 32 126758318.5 -10

9 75865556.47 -7.1 33 126826278.3 -8.8

10 75866531.47 -7.9 34 126833983.4 -7.7

11 75870296.15 -7.5 35 126844376.5 -7.2

12 101069532.7 -8.2 36 126914899.4 -7.4

13 101079168.6 -8.1 37 139123117.8 -7.1

14 101080221.6 -7.2 38 139123549.3 -7.2

15 101081410.9 -10.7 39 139300106.2 -8.9

16 104191887.2 -7.7 40 139306642.9 -7.1

17 104273028.9 -7.6 41 139374320 -7.5

18 104340676.8 -8.4 42 139377035.8 -7.4

19 104349094.7 -7.4 43 139382789.1 -7.1

20 104353322.2 -7.2 44 158424953.3 -7.1

21 104354428.1 -7.8 45 158465382.4 -7.5

22 104423594.5 -8.2 46 258776105 -7.5

23 104423759.9 -7.3 47 264201682.6 -7

24 104516097.1 -8

1ms-event ： 10

2ms-event ： 36

5ms-event ： 1

-11

-10.5

-10

-9.5

-9

-8.5

-8

-7.5

-7

-6.5

-6

70000000 90000000 110000000 130000000 150000000 170000000 190000000 210000000 230000000 250000000 270000000

Time

Sign

ifica

nce

2ms event 1ms event 5ms event

Event with Time

PrNb Date_Start Date_end Time(s) Use-PCA-Mode Find Event

10056

1996/05/25

1996/05/28

63826B_125US_1M_0_87_

H8

10061

1996/05/24

1996/05/25

5254B_125US_1M_0_87_

H3

　 1997/03/15

1997/03/15

9604B_125US_1M_0_87_

H4

　 1998/01/02

1998/01/02

9362B_125US_1M_0_87_

H　

20053

1997/04/18

1997/04/24

68067B_250US_2A_0_49_

H10

　 1998/01/03

1998/01/08

38932B_250US_2A_0_49_

H7

20426

1997/08/03

1997/08/04

6782B_250US_2A_0_49_

H1

　 1997/08/22

1997/08/22

4549 B_250US_2A_0_49_

H1

30035

1998/05/30

1998/06/02

28143B_250US_2A_0_49_

H7

　 1999/01/06

1999/01/06

638 B_250US_2A_0_49_

H　

30036

1999/01/06

1999/01/08

6424 B_250US_2A_0_49_

H2

40020

1999/01/08

1999/01/09

23726B_125US_1M_0_87_

H2

40706

1999/06/10

1999/06/13

42078 B_250US_2A_0_49_

H　

70014

2002/03/15

2002/03/15

4592B_250US_1M_0_249

_H1

　 2002/05/15

2002/05/16

9200 B_250US_1M_0_249

_H1

70015

2002/05/19

2002/05/19

1376 B_250US_2A_8_39_

H　

event5 10056-01-02-00-B_125us_1M_0_87_H-10ms-2.lc 75681893.98 -6.4

　 10056-01-02-00-B_125us_1M_0_87_H-1ms-2.lc 75681893.99 -7

　 10056-01-02-00-B_125us_1M_0_87_H-1ms-2.lc 75681893.99 -9.9

　 10056-01-02-00-B_125us_1M_0_87_H-2ms-2.lc 75681893.99 -7

　 10056-01-02-00-B_125us_1M_0_87_H-5ms-2.lc 75681893.99 -10.4

event6 10056-01-03-00-B_125us_1M_0_87_H-1ms-2.lc 75768925.2 -7.6

　 10056-01-03-00-B_125us_1M_0_87_H-2ms-2.lc 75768925.2 -9.1

12 10061-01-02-00-B_125us_1M_0_87_H-1ms-1.lc 101069532.7 -9.2

　 10061-01-02-00-B_125us_1M_0_87_H-1ms-1.lc 101069532.7 -7.4

　 10061-01-02-00-B_125us_1M_0_87_H-2ms-1.lc 101069532.7 -8.2

event15 10061-01-02-00-B_125us_1M_0_87_H-1ms-3.lc 101081410.9 -9.1

　 10061-01-02-00-B_125us_1M_0_87_H-2ms-3.lc 101081410.9 -10.7

event24 20053-01-01-06-B_250us_2A_0_49_H-1ms-3.lc 104516097.1 -9

　 20053-01-01-06-B_250us_2A_0_49_H-2ms-3.lc 104516097.1 -8

event32 20053-01-02-03-B_250us_2A_0_49_H-1ms-3.lc 126758318.5 -7.5

　 20053-01-02-03-B_250us_2A_0_49_H-2ms-3.lc 126758318.5 -10

event39 30035-01-03-00-B_250us_2A_0_49_H-1ms-6.lc 139300106.2 -8

　 30035-01-03-00-B_250us_2A_0_49_H-2ms-6.lc 139300106.2 -8.9

24 13

10

Problem?

• What makes the lightcurves drop?

Instrument Problem? KBO? OR Other?

• If the events are ture occultation, the objects maybe the any objects between Earth and SCO X-1, can we understand them?

• Do the shapes of lightcurve drops have any relation?

Future Work ?

Work Hard !

Thanks…..

……….. be continued