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
223
March 21st, 2020
02 38 39
+16 36 59
305
February 11th, 2016
02 40 32
+61 13 46
622
March 2nd, 2023
05 30 56
+13 31 55
200
January 30th, 2019
07 21 53
+71 20 36
551
April 7th, 2022
08 30 52
+24 10 60
140
March 20th, 2016
08 54 49
+20 06 31
934
March 20th, 2023
11 04 27
+38 12 32
1808
March 22nd, 2023
12 21 32
+28 13 58
181
April 28th, 2022
15 12 51
-09 05 60
513
February 24th, 2023
16 26 06
-29 51 27
91
September 22nd, 2016
16 53 52
+39 45 37
959
November 8th, 2022
17 33 03
-13 04 50
132
February 1st, 2021
21 58 52
-30 13 32
449
October 22nd, 2022

Additional Sources
Target
RA (J2000)
Dec (J2000)
Exposure
Time (ks)
Last Observation
00 00 00
+00 00 00
2
January 31st, 2021
00 06 20
+20 12 11
1072
January 18th, 2023
00 17 36
-05 12 42
11
July 11th, 2011
00 28 30
+20 00 27
30
August 20th, 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
73
September 9th, 2022
01 12 06
+22 44 39
71
December 21st, 2022
01 33 06
-52 00 04
13
December 12th, 2022
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
10
August 27th, 2017
01 52 40
+01 47 17
27
January 2nd, 2014
02 06 26
-11 50 40
21
January 7th, 2021
02 17 49
+01 44 50
16
March 4th, 2022
02 21 05
+35 56 14
106
September 16th, 2020
02 31 12
-47 46 12
9
October 27th, 2019
02 36 53
-61 36 15
32
October 6th, 2013
02 43 40
+61 26 03
173
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 09 56
-60 58 39
8
December 1st, 2009
03 24 41
+34 10 46
344
February 13th, 2023
03 48 38
-27 49 14
101
December 26th, 2021
04 03 54
-36 05 02
78
February 19th, 2023
04 05 34
-13 08 14
36
April 8th, 2020
04 06 59
-38 26 28
22
November 11th, 2009
04 28 40
-37 56 20
29
December 25th, 2012
04 40 17
-43 33 09
31
November 16th, 2021
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 09 26
+05 41 35
219
September 19th, 2022
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
139
December 26th, 2022
05 22 58
-36 27 31
88
December 2nd, 2021
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
155
October 28th, 2015
05 39 54
-28 39 56
95
June 9th, 2022
06 23 40
-33 50 17
14
November 30th, 2017
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
25
November 14th, 2021
06 48 48
+15 16 24
11
April 18th, 2010
06 58 45
+06 37 12
14
December 11th, 2020
07 10 30
+59 08 20
90
February 13th, 2023
07 25 17
+14 25 14
52
January 15th, 2020
07 30 19
-11 41 13
50
October 15th, 2010
07 33 27
+51 53 56
23
April 19th, 2018
07 39 18
+01 37 05
70
May 27th, 2019
07 46 26
+25 49 02
105
October 14th, 2011
07 48 36
+24 00 24
4
May 28th, 2014
08 08 16
-07 51 10
56
November 29th, 2022
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
152
February 27th, 2020
09 04 53
-57 35 06
79
October 27th, 2022
09 09 10
+01 21 36
37
March 1st, 2020
09 12 12
+41 26 09
8
October 29th, 2015
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
186
January 15th, 2022
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
103
February 16th, 2023
11 03 04
+11 58 17
11
January 12th, 2015
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 36 30
+67 37 04
27
May 1st, 2014
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
13
June 16th, 2020
12 20 04
+71 05 31
14
August 14th, 2011
12 24 24
+24 36 24
36
May 27th, 2016
12 24 54
+21 22 46
205
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
104
March 16th, 2023
12 43 13
+36 27 44
33
March 9th, 2022
12 54 60
-71 38 18
11
November 4th, 2015
13 02 48
-63 50 09
336
March 21st, 2023
13 16 08
-33 38 59
36
March 4th, 2023
13 32 04
-05 09 44
30
December 25th, 2022
13 37 40
-12 57 25
26
July 11th, 2021
13 54 47
-10 41 03
14
September 5th, 2010
14 08 56
-07 52 27
127
July 25th, 2022
14 15 59
+13 20 24
56
January 14th, 2022
14 18 29
+35 42 49
10
March 10th, 2019
14 27 01
+23 47 56
112
May 5th, 2022
14 27 56
-42 06 19
213
January 6th, 2023
14 43 57
+25 01 44
50
March 20th, 2023
14 43 57
-39 08 39
32
January 25th, 2023
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
206
January 16th, 2022
15 10 03
+57 02 43
24
March 5th, 2023
15 11 00
+05 49 21
10
February 19th, 2021
15 17 42
-24 22 19
49
July 12th, 2018
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
488
March 19th, 2023
16 02 07
+33 26 53
14
January 2nd, 2022
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
17 03 37
-62 12 40
4
July 28th, 2017
17 17 35
-51 55 32
21
July 22nd, 2022
17 19 13
+17 45 06
13
August 19th, 2011
17 23 39
-37 39 42
1
January 30th, 2012
17 27 28
+45 30 40
19
May 11th, 2010
17 28 19
+50 13 10
257
September 1st, 2022
17 33 23
+15 13 22
7
August 18th, 2014
17 48 33
+70 05 51
87
March 28th, 2020
17 51 33
+09 39 01
79
March 4th, 2022
18 00 46
+78 28 04
132
April 7th, 2022
18 01 32
+44 04 22
25
March 8th, 2019
18 33 40
-21 03 40
160
May 16th, 2022
19 03 01
-67 49 36
8
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
2
November 20th, 2021
19 24 51
-29 14 30
26
April 13th, 2021
19 45 39
+27 21 56
32
November 19th, 2021
19 55 43
+51 31 49
11
May 11th, 2011
19 57 60
-38 45 06
20
June 25th, 2022
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
168
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
387
November 15th, 2022
20 25 41
-07 35 53
82
October 14th, 2017
20 32 13
+41 27 24
578
December 21st, 2021
20 35 22
+10 56 07
31
June 7th, 2015
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
86
July 19th, 2012
21 02 10
+45 46 33
103
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
22 01 43
+50 48 56
25
March 17th, 2015
22 19 14
+18 06 36
4
August 28th, 2015
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 44
-28 06 39
13
December 1st, 2011
23 23 32
-03 17 05
37
November 25th, 2015
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