Swift-XRT Monitoring of Fermi-LAT Sources of Interest

The monitoring data shown on this site provides near real-time results from Swift observations of Fermi-LAT "sources of interest" and flaring sources. While this list is dominated by blazars, some X-ray binaries and Galactic transients are also included. The preliminary results on this page are intended to provide rapid feedback to the scientific community to aid in target of opportunity planning, multiwavelength campaigns, and planning of interesting scientific publications.

Data on this site is available to the public (thanks to support from the Fermi GI program and the Swift Team). If you make use of any of these data, we ask that you reference M.C. Stroh & A.D. Falcone 2013, ApJS, 207, 28; arXiv: 1305.4949 and that you notify Abe Falcone and Michael Stroh at monitoring@swift.psu.edu.

The results presented on this page are from a preliminary analysis of the Swift-XRT data. The analysis procedure is described in this README file. Since the analysis is performed using automated scripts and the results are not always reviewed by human eyes, we recommend that these data be reviewed by hand before use in publications.

For questions or requests for more detailed analysis, please contact Abe Falcone and Michael Stroh at monitoring@swift.psu.edu. This web site is under construction so please report any web site related problems to the email address listed above.

ChangeLog - Last Updated: 2018-10-07

Upcoming Observations

Original 23 Fermi-LAT Monitored Sources
Target
RA (J2000)
Dec (J2000)
Exposure
Time (ks)
Last Observation
02 10 46
-51 01 02
222
March 21st, 2020
02 38 39
+16 36 59
303
February 11th, 2016
02 40 32
+61 13 46
581
January 14th, 2021
05 30 56
+13 31 55
202
January 30th, 2019
07 21 53
+71 20 36
529
January 10th, 2021
08 30 52
+24 10 60
140
March 20th, 2016
08 54 49
+20 06 31
780
June 11th, 2021
11 04 27
+38 12 32
1727
June 12th, 2021
12 21 32
+28 13 58
181
January 28th, 2020
12 29 07
+02 03 09
623
August 10th, 2021
12 56 11
-05 47 22
696
January 20th, 2021
14 08 56
-07 52 27
123
June 20th, 2016
14 28 33
+42 40 29
275
May 16th, 2021
15 12 51
-09 05 60
493
June 6th, 2021
16 26 06
-29 51 27
91
September 22nd, 2016
16 35 15
+38 08 04
233
March 31st, 2021
16 53 52
+39 45 37
848
September 12th, 2021
17 33 03
-13 04 50
132
February 1st, 2021
19 59 60
+65 08 55
595
August 29th, 2021
21 58 52
-30 13 32
410
September 15th, 2021
22 02 43
+42 16 40
794
August 29th, 2021
22 53 58
+16 08 54
727
August 26th, 2020
23 47 05
+51 42 18
317
September 2nd, 2021

Additional Sources
Target
RA (J2000)
Dec (J2000)
Exposure
Time (ks)
Last Observation
00 06 20
+20 12 11
1003
September 18th, 2021
00 17 36
-05 12 42
11
July 11th, 2011
00 28 30
+20 00 27
30
August 20th, 2020
00 35 53
+59 50 05
194
December 13th, 2020
00 38 15
-24 59 02
22
August 15th, 2019
01 02 46
+58 24 11
31
April 21st, 2016
01 08 39
+01 35 00
68
January 7th, 2021
01 09 46
+61 33 30
40
February 25th, 2010
01 12 06
+22 44 39
57
July 13th, 2021
01 12 50
+32 08 17
6
August 31st, 2009
01 18 32
+63 44 24
147
May 16th, 2020
01 33 06
-52 00 04
7
November 23rd, 2017
01 36 33
+39 05 59
22
June 9th, 2019
01 36 59
+47 51 29
71
August 17th, 2020
01 38 35
+29 22 05
9
August 27th, 2017
01 52 40
+01 47 17
27
January 2nd, 2014
02 05 05
+32 12 30
14
October 4th, 2006
02 06 26
-11 50 40
21
January 7th, 2021
02 11 13
+10 51 35
33
June 21st, 2020
02 21 05
+35 56 14
106
September 16th, 2020
02 22 40
+43 02 08
196
January 6th, 2021
02 31 12
-47 46 12
9
October 27th, 2019
02 32 49
+20 17 17
128
August 16th, 2021
02 36 53
-61 36 15
32
October 6th, 2013
02 37 52
+28 48 09
37
September 23rd, 2018
02 43 40
+61 26 03
172
April 27th, 2021
02 46 00
-46 51 18
7
August 15th, 2017
02 52 48
-22 19 25
19
November 22nd, 2012
02 53 29
-54 41 51
5
December 4th, 2007
03 03 27
-24 07 11
25
February 3rd, 2012
03 19 48
+41 30 42
182
December 2nd, 2018
03 24 41
+34 10 46
336
September 19th, 2021
03 26 14
+02 25 15
21
July 11th, 2005
03 39 31
-01 46 36
91
August 16th, 2017
03 48 38
-27 49 14
76
August 6th, 2019
03 59 30
+50 57 50
70
December 15th, 2015
04 03 54
-36 05 02
73
May 11th, 2016
04 05 34
-13 08 14
36
April 8th, 2020
04 06 59
-38 26 28
22
November 11th, 2009
04 16 52
+01 05 24
51
January 7th, 2021
04 23 16
-01 20 33
70
September 17th, 2021
04 28 40
-37 56 20
29
December 25th, 2012
04 33 11
+05 21 16
285
April 6th, 2021
04 40 17
-43 33 09
14
December 21st, 2016
04 42 39
-00 17 43
29
August 2nd, 2013
04 49 23
+63 32 09
6
July 14th, 2017
04 49 25
-43 50 09
74
July 20th, 2017
04 57 03
-23 24 52
89
August 17th, 2016
05 01 13
-01 59 14
66
August 30th, 2015
05 05 23
+04 59 43
82
April 9th, 2015
05 07 56
+67 37 24
61
November 14th, 2020
05 09 26
+05 41 35
209
February 13th, 2021
05 10 02
+18 00 42
22
November 24th, 2016
05 15 45
-45 56 43
42
June 6th, 2021
05 20 31
-69 31 55
116
November 8th, 2018
05 21 46
+21 12 52
137
March 13th, 2021
05 22 58
-36 27 31
76
July 3rd, 2020
05 31 60
-48 27 19
65
February 9th, 2014
05 32 39
+07 32 43
30
November 15th, 2011
05 38 50
-44 05 09
177
October 28th, 2015
05 38 55
+26 18 57
160
April 22nd, 2021
05 39 54
-28 39 56
89
January 11th, 2021
06 22 52
+33 26 10
37
January 11th, 2011
06 23 40
-33 50 17
12
December 20th, 2013
06 45 41
-12 24 34
3
April 8th, 2020
06 48 14
-30 44 20
5
January 23rd, 2012
06 48 29
-17 44 05
12
December 28th, 2018
06 48 48
+15 16 24
11
April 18th, 2010
06 50 46
+25 03 00
134
March 31st, 2021
06 54 24
+45 14 24
16
October 1st, 2011
06 58 45
+06 37 12
14
December 11th, 2020
07 10 30
+59 08 20
76
December 23rd, 2017
07 13 05
+57 38 10
9
September 9th, 2017
07 25 17
+14 25 14
51
January 15th, 2020
07 30 19
-11 41 13
50
October 15th, 2010
07 33 27
+51 53 56
23
April 19th, 2018
07 38 07
+17 42 19
41
September 3rd, 2012
07 39 18
+01 37 05
64
May 27th, 2019
07 42 40
+54 44 24
5
March 1st, 2010
07 46 26
+25 49 02
105
October 14th, 2011
07 51 54
+33 13 20
4
November 1st, 2016
08 08 16
-07 51 10
51
March 13th, 2015
08 09 42
+53 41 25
9
May 8th, 2014
08 09 49
+52 18 58
61
March 22nd, 2015
08 31 49
+04 29 39
75
December 11th, 2019
08 41 24
+70 53 42
222
December 20th, 2020
08 44 12
+53 12 51
12
March 30th, 2021
08 47 13
+11 33 50
11
February 3rd, 2018
08 49 58
+51 08 29
153
February 27th, 2020
09 04 53
-57 35 06
44
August 11th, 2021
09 09 10
+01 21 36
37
March 1st, 2020
09 10 58
-50 48 10
23
December 11th, 2016
09 12 12
+41 26 09
8
October 29th, 2015
09 15 52
+29 33 24
33
December 19th, 2018
09 20 58
+44 41 54
16
May 21st, 2018
09 27 52
-20 34 51
9
July 17th, 2008
09 48 57
+00 22 24
152
June 29th, 2021
09 55 08
+35 51 01
49
February 21st, 2020
09 57 38
+55 22 58
39
December 10th, 2019
09 58 47
+65 33 55
139
February 18th, 2020
10 15 04
+49 26 01
100
February 28th, 2021
10 32 53
+60 51 28
52
July 1st, 2016
10 33 51
+60 51 07
51
July 1st, 2016
10 37 42
-28 23 04
15
March 2nd, 2016
10 44 23
+80 54 39
16
April 10th, 2016
10 48 28
+71 43 36
73
September 15th, 2021
10 58 30
+01 33 59
59
February 12th, 2021
11 03 04
+11 58 17
11
January 12th, 2015
11 06 37
+36 26 50
5
October 10th, 2019
11 11 47
-82 38 44
40
October 23rd, 2017
11 21 25
-05 53 56
8
February 22nd, 2009
11 23 19
-64 17 36
16
June 7th, 2011
11 27 04
-18 57 17
34
December 30th, 2011
11 30 07
-14 49 27
75
March 1st, 2021
11 30 53
+38 15 19
10
July 7th, 2007
11 36 30
+67 37 04
27
May 1st, 2014
11 45 05
+19 36 23
53
February 16th, 2021
11 46 58
+39 58 34
4
July 25th, 2020
11 52 17
-08 41 03
20
March 9th, 2021
11 53 22
-11 05 13
12
December 9th, 2018
11 53 24
+49 31 09
56
November 8th, 2019
11 59 11
-22 28 37
10
June 16th, 2020
11 59 32
+29 14 44
160
July 28th, 2021
12 17 52
+30 07 01
66
May 12th, 2021
12 20 04
+71 05 31
14
August 14th, 2011
12 21 22
+30 10 37
132
June 5th, 2020
12 24 24
+24 36 24
36
May 27th, 2016
12 24 54
+21 22 46
203
April 30th, 2018
12 30 14
+25 18 07
32
June 6th, 2015
12 30 14
+25 18 07
32
June 6th, 2015
12 30 49
+12 23 28
81
April 15th, 2021
12 39 33
+04 43 05
6
August 11th, 2019
12 43 13
+36 27 44
32
March 22nd, 2021
12 54 60
-71 38 18
11
November 4th, 2015
13 01 17
-61 36 07
205
August 10th, 2021
13 02 48
-63 50 09
325
May 24th, 2021
13 08 24
+35 46 37
3
June 7th, 2020
13 10 29
+32 20 44
86
April 9th, 2021
13 12 43
+48 28 31
47
June 9th, 2020
13 16 08
-33 38 59
36
June 2nd, 2021
13 25 28
-43 01 09
156
August 5th, 2019
13 32 04
-05 09 44
30
December 6th, 2020
13 37 40
-12 57 25
26
July 11th, 2021
13 45 33
+44 52 59
23
January 10th, 2014
13 54 47
-10 41 03
14
September 5th, 2010
14 08 56
-07 52 27
118
June 20th, 2016
14 15 59
+13 20 24
51
January 25th, 2021
14 18 29
+35 42 49
10
March 10th, 2019
14 22 30
+32 23 10
58
August 26th, 2021
14 27 01
+23 47 56
109
March 11th, 2021
14 27 56
-42 06 19
200
September 13th, 2018
14 42 48
+12 00 40
10
December 8th, 2015
14 43 57
+25 01 44
47
April 17th, 2016
14 43 57
-39 08 39
28
April 27th, 2019
14 54 27
+51 24 34
24
July 1st, 2021
14 57 27
-35 39 10
24
June 27th, 2021
15 04 25
+10 29 39
198
September 18th, 2021
15 11 00
+05 49 21
10
February 19th, 2021
15 17 42
-24 22 19
49
July 12th, 2018
15 20 41
-57 10 00
187
September 4th, 2021
15 22 10
+31 44 14
23
November 28th, 2010
15 34 52
+01 31 04
19
January 23rd, 2011
15 44 20
-06 49 15
77
March 22nd, 2020
15 55 43
+11 11 24
432
September 12th, 2021
16 12 43
-52 25 23
133
January 11th, 2019
16 13 41
+34 12 48
41
November 5th, 2014
16 25 47
-25 27 38
15
October 14th, 2013
16 27 00
-24 26 40
14
January 19th, 2018
16 35 47
+36 29 30
4
September 15th, 2016
16 42 59
+39 48 37
107
September 1st, 2017
17 00 09
+68 30 07
16
June 7th, 2021
17 03 37
-62 12 40
4
July 28th, 2017
17 09 41
+43 18 44
5
December 1st, 2009
17 17 35
-51 55 32
19
April 13th, 2012
17 19 13
+17 45 06
13
August 19th, 2011
17 23 39
-37 39 42
1
January 30th, 2012
17 25 04
+11 52 15
12
June 23rd, 2019
17 25 04
+11 52 15
12
June 23rd, 2019
17 27 28
+45 30 40
19
May 11th, 2010
17 28 19
+50 13 10
248
June 22nd, 2021
17 33 23
+15 13 22
7
August 18th, 2014
17 34 21
+38 57 51
12
December 7th, 2020
17 43 58
+19 35 09
19
October 11th, 2020
17 46 16
-32 14 01
362
August 21st, 2019
17 48 33
+70 05 51
87
March 28th, 2020
17 51 33
+09 39 01
76
July 27th, 2016
18 00 46
+78 28 04
125
April 18th, 2020
18 01 32
+44 04 22
24
March 8th, 2019
18 13 35
+31 44 18
24
November 4th, 2020
18 33 40
-21 03 40
150
July 1st, 2019
18 48 22
+32 19 03
39
October 6th, 2019
18 48 34
+32 44 00
16
October 9th, 2019
18 49 16
+67 05 42
57
May 31st, 2020
19 03 01
-67 49 36
7
May 31st, 2020
19 11 10
-20 06 55
23
October 17th, 2014
19 11 50
+04 58 58
49
August 29th, 2018
19 13 21
-36 30 19
1
February 24th, 2011
19 24 51
-29 14 30
26
April 13th, 2021
19 27 20
+65 33 54
36
August 20th, 2021
19 29 56
+18 18 39
72
March 23rd, 2018
19 45 39
+27 21 56
22
November 11th, 2019
19 49 36
+30 12 31
72
November 6th, 2019
19 55 43
+51 31 49
11
May 11th, 2011
19 57 60
-38 45 06
12
February 28th, 2018
20 01 13
+43 52 53
63
September 28th, 2019
20 05 31
+77 52 43
16
February 13th, 2016
20 07 55
-44 34 44
162
November 13th, 2019
20 10 20
-25 23 59
15
March 7th, 2020
20 15 29
+37 10 60
43
January 11th, 2018
20 24 04
+33 52 02
361
January 20th, 2016
20 25 41
-07 35 53
82
October 14th, 2017
20 32 13
+41 27 24
579
March 18th, 2019
20 32 26
+40 57 28
222
February 3rd, 2021
20 35 22
+10 56 07
31
June 7th, 2015
20 39 24
+52 19 50
73
September 27th, 2019
20 56 16
-47 14 48
26
April 16th, 2020
20 56 43
+49 40 07
19
July 2nd, 2019
20 58 20
+05 13 33
85
July 19th, 2012
21 02 10
+45 46 33
104
January 21st, 2021
21 36 39
+00 41 54
27
December 8th, 2018
21 41 46
-64 11 14
11
July 19th, 2020
21 43 36
+17 43 49
68
May 20th, 2011
21 47 10
+09 29 47
16
November 18th, 2011
21 47 13
-75 36 13
34
November 10th, 2014
21 51 56
-30 27 54
66
April 23rd, 2019
21 57 29
+31 27 01
15
July 12th, 2009
22 01 43
+50 48 56
25
March 17th, 2015
22 19 14
+18 06 36
4
August 28th, 2015
22 25 47
-04 57 01
34
June 8th, 2011
22 32 36
+11 43 51
298
July 18th, 2018
22 36 34
-14 33 22
31
July 20th, 2020
22 43 55
+20 21 04
15
December 30th, 2014
22 44 13
+40 57 14
20
November 25th, 2015
22 49 60
-12 51 17
33
October 14th, 2019
22 50 06
+38 24 37
46
October 16th, 2010
22 50 44
-28 06 39
13
December 1st, 2011
23 11 05
+34 25 11
15
August 18th, 2010
23 21 55
+32 04 08
8
May 20th, 2009
23 23 32
-03 17 05
37
November 25th, 2015
23 24 45
-40 40 49
20
October 12th, 2013
23 29 21
-49 55 41
36
December 20th, 2013
23 45 12
-15 55 08
81
September 2nd, 2013
23 48 03
-16 31 12
19
December 4th, 2009
Other Observations
Additional Links

Penn State University Goddard Space Flight Center Swift