The Arcminute Microkelvin Imager (AMI) Large Array robotically triggers on Swift transients (ALARRM mode), majority of which are gamma-ray bursts (GRBs). We follow up GRBs in the northern hemisphere on logarithmic timescales between 1 hour and ~10 days post-burst to look for radio afterglows at 15 GHz. This webpage contains the database of all the AMI-LA follow up observations since March 2016. The usual AMI-GRB program ended in September 2017, and February 2018 onwards we focus only on short GRBs. All reported upper limits below are 3σ. An absolute calibration uncertainty of 10% is not included in the table below. Please acknowledge AMI-GRB and 4pisky if you use this database in publications. The database is maintained by Joe Bright, Kunal Mooley and Tim Staley.
AMI short-GRB Program (Feb 2018 onwards):
| GRB | Time of Discovery (UT) |
AMI GCN | Date (UT) | S (μJy) |
|---|---|---|---|---|
| 180418A | 06:44 | 22697 | 180418.88 180420.89 180422.86 |
<99 <81 <93 |
| 180204A | 02:36 | 22416 | 180204.54 180205.55 180206.62 180209-11 |
<54 <55 <76 <63 |
AMI-GRB Program (Mar 2016 to Sep 2017):
| GRB | Time of Discovery (UT) |
AMI GCN | Date (UT) | S (μJy) |
|---|---|---|---|---|
| 170921A | 14:28 | 21951 | 170921.89 170927.04 170928.97 |
<186 <117 <159 |
| 170906C | 07:26 | 21949 | 170906.55 | <156 |
| 170903A | 12:49 | 21950 | 170903.57 170904.79 170906.82 170912.66 |
<225 <120 <126 <99 |
| 170823A | 22:16 | 21948 | 170824.41 170825.61 170826.58 |
<1000 <1100 <800 |
| 170822A | 09:11 | 21947 | 170822.42 170825.34 170826.34 170830.37 170903.28 170920.26 |
<165 <132 <138 <210 <210 <138 |
| 170728B | 23:03 | 21466 | 170729.00 170729.8 170730.80 170731.76 |
<258 <201 <171 <108 |
| 170728A | 06:53 | 21465 | 170728.32 170730.25 170801.27 170805.23 |
<141 <131 <129 <133 |
| 170714A | 12:25 | 21464 | 170715.11 170718.27 170720.23 170722.25 |
<279 <172 <288 <210 |
| 170711A | 22:20 | 21463 | 170712.14 170713.38 170716.29 170720.36 |
<186 <96 <102 <183 |
| 170710C (INTEGRAL) |
05:05 | 21462 | 170714.22 170717.14 170718.14 170721.11 |
<108 <90 <123 <108 |
| 170710B | 08:10 | 21461 | 170712.30 170713.26 170715.29 170719.23 |
<153 <93 <93 <222 |
| 170626A | 09:37 | 21460 | 170626.51 170628.76 170629.67 170704.66 |
<120 <138 <84 <132 |
| 170607A | 23:21 | 21275 | 170608.12 170610.29 170612.28 170616.24 |
<318 <108 <117 <117 |
| 170526A | 13:35 | 21058 | 170527.16 170530.29 170531.33 170603.28 |
<312 <117 <96 <105 |
| 170524A | 19:49 | 21058 | 170525.03 170526.26 170528.18 170601.20 |
<162 <207 <120 <126 |
| 170519A | 05:10 | 21058 | 170519.61 170520.84 170523.74 170527.78 |
<228 <190 <150 <100 |
| 170428A | 09:13 | 21058 | 170428.42 170430.34 |
<117 <96 |
| Trig748858 | 07:43 | 21057 | 170419.79 170421.09 |
<195 <120 |
| 170318B | 15:27 | 20957 | 170319.11 170321.17 170323.24 |
<300 <150 <315 |
| 170318A | 12:11 | 20956 | 170318.55 170321.50 |
<159 <93 |
| 170317A | 09:45 | 20955 | 170317.59 170318.78 170320.79 170322.78 |
<126 <246 <84 <111 |
| 170307A | 20:24 | 20880 | 170313.57 | <90 |
| 170206B | 21:57 | 20787 | 170208.37 170209.38 170211.35 170214.43 170215.46 |
<123 <108 <240 <108 <108 |
| 170203A | 00:03 | 20667 | 170203.37 170204.56 170206.56 170210.55 |
<183 <84 <75 <171 |
| 170202A | 18:28 | 20666 | 170202.87 170204.00 170206.04 170207.01 170209.00 |
<451 <69 <81 <352 <105 |
| 170115A | 20:50 | 20529 | 170116.42 170117.59 170118.67 170123.51 |
<300 <78 <72 <81 |
| 170105A (POLAR) |
06:14 | 20425 (LVC) |
170108.03 170112.03 170114.02 170115.03 170116.03 170117.03 170118.03 170119.04 170120.04 170121.01 170122.97 170124.01 |
353±17 183±19 142±19 122±20 118±27 118±27 81±23 149±21 84±28 <81 <84 82±18 |
| 170101A | 02:26 | 20449 | 170103.33 170104.45 170105.46 170107.45 |
<105 <132 <78 <120 |
| 161217A | 01:27 | 20447 | 161223.16 161224.15 161227.17 |
<84 <66 <77 |
| 161214B | 17:20 | 20453 | 161214.76 161216.76 161218.75 161221.74 |
<96 <87 <85 <104 |
| 161202A | 23:12 | 20318 | 161203.93 161205.77 |
<200 <121 |
| 161129A | 07:11 | 20317 | 161129.50 161130.72 161202.69 161206.68 |
<120 <102 <90 <117 |
| 161108A | 03:32 | 20200 | 161108.19 161109.40 161112.35 161115.36 |
<378 <284 <190 <93 |
| 161022A | 02:43 | 20143 | 161022.15 161023.26 161026.22 161029.31 |
<135 <93 <105 <105 |
| 161017A | 17:51 | 20142 | 161018.14 161019.33 161021.30 161025.31 161028.19 161103.24 161105.20 161107.19 |
<132 <84 <63 <78 <81 <87 <87 <81 |
| 161015A | 17:03 | 20116 | 161017.75 161018.73 161020.70 161024.65 |
<105 <96 <147 <78 |
| 161014A | 12:31 | 20115 | 161014.67 161015.85 161017.85 161020.85 |
<225 <285 <129 <228 |
| 161011A | 05:54 | 20084 | 161011.44 161013.66 161014.60 161018.56 |
<171 <117 <108 <147 |
| 161007A | 21:25 | 20083 | 161008.05 161009.25 161011.25 161015.25 |
<372 <273 <333 <222 |
| 160927A | 18:04 | 19978 | 160927.79 160928.70 160929.70 |
<132 <119 <86 |
| 160917A | 11:30 | 19951 | 160917.65 160920.87 160924.87 |
<150 <84 <90 |
| 160912A | 16:07 | 19950 | 160912.72 160913.81 160918.87 |
<147 <258 <102 |
| 160910A | 17:20 | 19937 | 160912.65 160913.68 160915.67 160920.68 |
791±55 1151±82 840±146 462±39 |
| 160824A | 23:22 | 19899 | 160825.11 160826.27 160828.29 160901.29 |
<444 <126 <117 <117 |
| 160821B | 22:29 | 19898 | 160822.85 160823.82 160825.83 160903.83 |
<138 <336 <129 <171 |
| 160821A | 20:34 | 19893 | 160822.55 160823.56 160825.56 160829.56 |
<87 <108 <108 <102 |
| 160816A | 17:31 | 19892 | 160818.02 160819.06 160903.02 |
<111 129±32 <168 |
| 160815A | 11:45 | — | — | — |
| 160804A | 01:32 | 19813 | 160804.85 160805.75 160807.75 160811.75 160816.67 |
<141 189±46 583±40 292±34 168±38 |
| 160801A | 09:28 | 19812 | 160802.75 160804.75 160808.73 |
<147 <123 <126 |
| 160714A | 02:19 | 19811 | 160714.65 160717.85 160721.85 160825.70 |
<150 <213 <132 <126 |
| 160705B | 21:02 | 19738 | 160705.89 160706.73 160708.74 160712.72 160828.56 |
<177 <102 <132 <213 <155 |
| 160703A | 12:10 | 19737 | 160704.99 160707.00 160711.00 160828.87 |
<150 <210 <120 <177 |
| 160629A (INTEGRAL) |
22:19 | 19689 | 160701.23 160702.23 160704.19 160708.19 |
219±49 128±37 <135 <243 |
| 160625B^ (Fermi) |
09:14 | 19610 | 160628.06 | 644±38 |
| 160624A | 11:27 | 19688 | 160624.97 160629.18 160702.05 160827.95 |
<268 <93 <114 <114 |
| 160623A^ (Fermi) |
05:00 | 19609 | 160625.15 160627.15 |
5000±100 6300±100 |
| 160601A | 14:43 | 19608 | 160601.78 160602.95 160604.95 160611.95 160806.77 |
<282 <216 <108 <132 <137 |
| 160525B | 09:25 | 19564 | 160525.55 160526.66 160528.66 160531.68 160806.54 |
<99 <63 <66 <96 <98 |
| 160521B (Fermi) |
09:14 | 19563 | 160524.75 160527.65 160603.73 160808.54 |
<108 <108 <117 <132 |
| 160521A (INTEGRAL) |
03:37 | 19534 | 160524.62 160527.52 160603.61 |
266±36 133±29 <93 |
| 160519A | 00:17 | 19533 | 160519.35 160520.50 160522.61 160526.50 160529.49 160804.33 |
<202 <72 <84 <87 <87 <121 |
| 160509A (Fermi) |
08:59 | 19532 | 160523.25 160526.21 160804.97 |
<137 <152 <115 |
| 160504A | 19:30 | 19510 | 160504.85 160505.88 160507.82 160511.90 160514.90 160805.60 |
<93 <72 <129 <123 <120 <190 |
| 160417A | 04:23 | 19509 | 160417.58 160418.81 160420.66 160424.68 160428.77 160607.70 |
<225 <105 <123 <72 <96 <210 |
| 160408A | 06:25 | 19508 | 160408.61 160409.77 160413.87 160415.74 160419.78 160602.71 |
<117 <144 <102 <204 <145 <120 |
| 160327A | 09:16 | 19453 | 160327.75 160328.94 160330.94 160404.79 160406.83 160531.83 |
<84 <69 <96 <102 <93 <124 |
| 160321A | 15:55 | 19452 | 160321.70 160322.85 160324.74 160329.66 160331.68 160603.46 |
<195 <261 <162 <207 <189 <270 |
| 160314A | 11:32 | 19451 | 160314.65 160315.81 160317.73 160321.82 160324.91 160614.68 |
<280 <100 <270 <100 <320 <165 |
| 160313A | 02:62 | 19450 | 160313.15 160313.97 160316.00 160320.11 160323.02 160606.79 |
<130 <60 <100 <170 <70 <159 |
Notes:
* For GRB 160705B, the flux calibration uncertainties on 160706.73 and 160712.72 are 25%.
* For GRB 160703A, the flux calibration uncertainty on 160704.99 is 30%.
* For GRB 160417A, the flux calibration uncertainties on 160420.66 and 160424.68 are 35%.
* For GRB 160521A, the location of the radio counterpart is RA=08:38:51.3 +/-6 arcsec, Dec=+46:54:21 +/-24 arcsec.
* For GRB 160815A, there is no good data since the calibrator observations failed.
^ Preliminary results. Monitoring of this source is underway.
4 Pi Sky 