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Gamma Ray Burst Observations
by Rodney Howe, email ahowe at frii dot com

This page is for posting the potential GRB detection data that I collect, as well as any data posted by other SARA members. I hope I can thus get folks to participate. There was a GRB on November 12, coming from the direction of Perseus. Here are an image of the data and a detail. I seriously doubt that what looks like a GRB in this data, for this time, is the real thing, but it might get folks to looking, and sharing data.

At 03:28:15.89 UTC on 12 November 2002, the HETE FREGATE and WXM instruments detected event H2448, a long GRB.

(Click on thumbnail to download full-size image)

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RA = +02 h 36 m 52 s, Dec = +48 d 50 m 56 s (J2000)

(Click on thumbnail to download full-size image)

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Here are steps I would suggest folks take to get started with GRB or x-ray transient detection: There is a lot out there on this topic, it is hard to focus, so I would suggest these lists, if you're not already subscribed:

1). Subscribe to the GCN circular through Aaron Price at AAVSO, email him and ask to be put on his GCN list where you can get the HETE and upcoming INTERGRAL alerts:

2). To view the alert archives from GCN distributed via the AAVSO GRB Network:

3). I would also subscribe to the AAVSO/SID group, Casper Hossfield moderates this list and it has become dedicated to GRB, x-ray transient postings as well as SID, SES work:

4). These are some interesting studies on how the solar wind pushes the upper ionosphere layers around during the day and nighttime. It seems during the day the ionosphere gets compressed along with the high energy ionization, and percipitation of relativistic electrons. It will be a challenge for those of us who want to detect GRB or x-ray transients to find the signal in all this noise coming from the Sun.

5). A most interesting book recently translated: "Flash, The hunt for the biggest explosions in the universe", by Govert Shcilling, Cambridge University Press, 2002, (It is also publihsed in Dutch by Uitgeverij Wereldbibliotheek, Amsterdam, 2000.) The book does not discuss VLF detection, but it is a well written history of the discoveries of GRB and Soft Gamma Repeaters.

There are only three groups that I know of currently interested in the VLF detection: SARA, AAVSO, and NASA. I think AAVSO is further along, although, folks are recording mostly without computers: they use Rustrack thermal paper recorders. The SARA group use computers, but seem to be new to SID recording.

From NASA, Jerry Fishman, has been kind enough to send a list of the top 200 GRB detections from the BATSE collector, before it went into the Pacific. The only folks with data back to 1990 are folks doing SID work at AAVSO. If you collect VLF data check your data files for any of these long duration GRBs.

BATSE - The 200 Most Intense Gamma-Ray Bursts

(by total Fluence in ergs/cm^2, 50-300 keV)

Trig. No. UT yr mo day hr min sec ra dec Fluence
7113 1998 9 23 20 1047.523 76.950 -80.600 1.721e-04
73011999 1 4 16 233.723 129.960 1.190 1.670e-04
30571994 7 3 4 4046.514 131.50027.390 1.482e-04
65261997 12 8 7 4812.129 356.46077.940 1.464e-04
28561994 3 2 5 831.514 12.490 -23.970 1.388e-04
28311994 2 17 23 242.070 29.070 4.550 1.238e-04
56141996 9 24 11 4150.664 37.280 2.700 1.084e-04
43681996 1 14 12 15 4.777 216.190 -29.730 1.070e-04
73431999 1 23 9 4656.121 229.08042.310 1.020e-04
79061999 12 16 16 7 1.371 77.94010.880 8.632e-05
32451994 10 17 10 1933.937 301.550 9.810 8.285e-05
74911999 3 23 17 2937.082 332.580 -76.540 8.203e-05
64721997 11 10 18 5326.883 241.67050.370 8.147e-05
27981994 2 6 0 837.786 144.200 -59.960 7.921e-05
21561993 2 1 16 4155.586 333.53041.150 7.345e-05
75491999 5 6 11 2330.937 178.940 -26.230 7.067e-05
65871998 2 3 22 47 8.2583.460 -17.650 7.024e-05
75751999 5 18 17 1845.496 343.330 -38.680 6.889e-05
23291993 5 6 14 5251.457 64.450-5.970 6.588e-05
33521995 1 11 12 1830.195 19.570 -10.220 6.058e-05
25331993 9 16 20 1923.414 280.71065.390 5.935e-05
35231995 4 25 0 1519.218 163.160 -35.250 5.762e-05
2491991 6 1 19 2214.508 310.12032.340 5.422e-05
20671992 11 23 6 1831.682 334.240 -53.250 5.341e-05
1431991 5 3 7 412.652 87.45038.740 5.321e-05
15411992 4 6 2 4413.547 289.910 -57.690 5.311e-05
14731992 3 11 2 2024.043 129.760 -36.570 5.253e-05
64541997 10 29 6 1348.898 66.870 -44.970 5.125e-05
16631992 6 22 7 5 4.490 162.10047.170 4.688e-05
31281994 8 17 8 4015.793 280.840 3.470 4.330e-05
34081995 2 8 2 1024.049 336.96054.190 4.201e-05
32271994 10 8 13 3252.785 305.620 -52.180 4.162e-05
61241997 3 15 15 4054.2192.15060.720 4.076e-05
10851991 11 18 18 5738.023 167.030 -20.850 4.049e-05
20831992 12 7 16 047.937 306.330 -42.930 3.952e-05
59951997 2 2 7 1044.426 49.580 -28.790 3.903e-05
76781999 7 28 11 344.891 209.620 -56.840 3.791e-05
57731997 1 11 9 44 0.203 231.25018.730 3.749e-05
61981997 4 20 20 14 2.188 212.990 -15.910 3.627e-05
16061992 5 13 16 5259.113 211.160 -44.770 3.523e-05
69851998 8 10 18 3529.375 349.93024.640 3.466e-05
28551994 3 1 20 1037.078 103.51064.350 3.455e-05
54861996 6 5 8 952.137 154.260-1.980 3.402e-05
16251992 5 25 3 27 1.737 299.630 -42.050 3.305e-05
56541996 11 2 11 3823.816 271.44028.130 3.294e-05
64531997 10 29 1 2838.370 101.12024.670 3.285e-05
53041996 3 22 5 2721.418 96.980 -54.610 3.282e-05
76881999 8 2 1 443.513 34.75040.500 3.222e-05
66651998 3 29 3 4438.497 105.58039.440 3.221e-05
3941991 6 19 14 1432.812 21.170 -36.570 3.122e-05
73601999 1 29 5 1550.906 94.920 -12.280 3.086e-05
30671994 7 8 20 42 6.195 301.58024.660 3.062e-05
30421994 6 23 18 4623.641 108.37075.780 3.043e-05
74751999 3 16 9 4039.547 152.080-4.440 3.038e-05
61681997 4 11 9 5225.801 56.97034.340 3.019e-05
30351994 6 19 21 3120.602 299.050 -29.890 2.989e-05
55911996 8 31 10 2830.539 242.76022.930 2.897e-05
12881992 1 10 9 1758.250 58.080 -20.800 2.879e-05
66151998 2 25 8 2924.066 126.17014.440 2.861e-05
39301995 12 3 1 627.634 279.840 -19.250 2.798e-05
80082000 3 2 2 5025.081 58.20054.280 2.794e-05
79292000 1 1 1 1959.226 300.77028.490 2.752e-05
23161993 4 25 10 1729.984 18.000 -35.190 2.740e-05
22871993 4 5 13 5950.656 200.06013.020 2.669e-05
65761998 1 24 6 3433.057 272.22080.300 2.664e-05
34911995 4 3 13 1947.379 36.39010.710 2.598e-05
37651995 8 18 1 2322.930 278.65033.870 2.548e-05
20611992 11 18 22 1144.383 350.45050.320 2.515e-05
72471998 12 3 0 5912.993 161.46032.910 2.511e-05
1091991 4 25 0 3745.708 91.290 -22.770 2.496e-05
18861992 9 2 0 2856.322 279.150 -20.700 2.488e-05
26061993 10 26 11 3557.336 51.360 -10.560 2.458e-05
65931998 2 8 12 5059.937 60.970 -75.490 2.406e-05
21381993 1 20 23 3140.289 261.31014.740 2.401e-05
34921995 4 3 23 3346.547 184.64056.550 2.372e-05
56291996 10 9 13 3745.160 130.200 -80.230 2.341e-05
13851992 2 10 9 5343.789 150.97048.360 2.324e-05
66291998 3 6 9 33 2.5627.050 -45.510 2.311e-05
70121998 8 21 17 16 5.730 123.500 -12.000 2.306e-05
29941994 5 26 20 20 5.789 131.85034.200 2.286e-05
32411994 10 14 9 20 8.113 31.660 7.430 2.281e-05
11211991 11 26 12 4847.723 159.790 6.930 2.274e-05
71701998 10 21 23 812.320 357.160 1.670 2.255e-05
28521994 2 28 11 29 0.312 127.980 -12.360 2.253e-05
65811998 1 25 20 3928.734 350.68035.810 2.241e-05
16091992 5 17 3 1754.922 204.100 -16.470 2.235e-05
54891996 6 7 21 4115.594 48.43075.100 2.224e-05
63291997 8 7 18 25 9.086 289.440 -38.700 2.218e-05
28891994 3 19 23 5720.922 68.740 -12.600 2.214e-05
79542000 1 15 14 4932.027 116.550 -15.790 2.205e-05
81012000 5 11 1 1159.993 331.240 -36.110 2.203e-05
63531997 8 31 17 3930.656 85.750 -47.330 2.194e-05
69631998 8 3 13 3620.707 141.19057.980 2.192e-05
76951999 8 3 6 2935.930 258.630-2.030 2.176e-05
77941999 10 9 16 4955.961 257.270 -46.920 2.176e-05
62741997 6 16 18 950.281 20.440-7.120 2.153e-05
23891993 6 12 8 5357.889 347.100-1.080 2.109e-05
34891995 4 1 20 4354.414 86.06043.750 2.106e-05
37881995 9 9 23 4412.469 216.360-0.110 2.085e-05
6781991 8 14 19 1433.000 346.35030.430 2.066e-05
29291994 4 14 16 4625.563 181.260 -26.150 2.062e-05
16761992 6 27 13 236.137 166.020-2.580 2.030e-05
31781994 9 21 5 813.105 204.900 -17.770 2.008e-05
74641999 3 11 22 1145.531 43.95019.250 1.974e-05
29531994 4 29 0 4353.434 35.100 -57.520 1.960e-05
15031992 3 20 12 1858.859 323.87057.810 1.957e-05
61001997 2 23 8 2617.674 142.44035.460 1.917e-05
68911998 7 3 4 2245.218 359.07012.010 1.881e-05
1301991 4 30 17 839.148 135.800 2.730 1.837e-05
47011996 2 1 21 4843.336 358.05014.460 1.821e-05
20801992 12 6 18 2419.328 176.48045.720 1.812e-05
73101999 1 8 8 21 6.426 62.130 -12.110 1.811e-05
34811995 3 25 17 3631.922 66.220 -11.560 1.808e-05
61151997 3 6 2 4739.466 18.34021.360 1.800e-05
30711994 7 10 9 5529.074 96.420 -36.590 1.795e-05
69441998 7 24 20 3440.992 193.920-0.770 1.763e-05
78351999 11 1 15 8 1.656 259.37078.120 1.758e-05
34151995 2 11 20 748.852 64.350 -55.020 1.736e-05
80982000 5 8 19 1050.875 253.540 -20.380 1.732e-05
34481995 3 1 21 241.328 307.96012.920 1.728e-05
28911994 3 23 22 438.422 213.890 8.370 1.713e-05
17121992 7 20 5 5252.865 144.740 -10.300 1.703e-05
65251997 12 7 20 352.930 133.740-4.590 1.686e-05
9731991 10 31 9 3620.523 284.54021.340 1.662e-05
22281993 3 9 3 749.762 325.41051.730 1.653e-05
34581995 3 5 15 5 4.945 197.200 -11.120 1.652e-05
76601999 7 18 12 651.898 286.920 1.330 1.635e-05
24501993 7 20 14 35 9.848 20.82025.340 1.602e-05
63891997 9 19 18 1429.539 140.390-4.740 1.595e-05
7611991 9 5 23 4855.273 360.000 -81.050 1.580e-05
75271999 4 24 3 1231.930 88.870 -60.330 1.578e-05
16521992 6 17 5 2651.242 37.66077.510 1.578e-05
78681999 11 21 11 2144.441 301.590 -61.570 1.571e-05
55671996 8 7 19 4926.344 157.53032.130 1.552e-05
25711993 10 8 11 910.680 165.40033.930 1.547e-05
45561996 1 24 0 5625.994 51.04054.050 1.540e-05
32471994 10 18 6 210.994 55.740 -16.280 1.525e-05
78841999 11 27 14 5459.707 16.480 -10.440 1.507e-05
6761991 8 14 11 940.332 58.01045.220 1.507e-05
6471991 8 7 7 2032.811 153.850 6.490 1.505e-05
79942000 2 21 23 3910.141 125.76077.700 1.503e-05
55121996 6 23 1 1848.521 180.780 7.590 1.498e-05
25301993 9 14 2 4911.577 34.26034.290 1.496e-05
77661999 9 15 23 1522.555 97.10071.870 1.487e-05
11411991 12 2 20 2849.711 172.500 -22.840 1.476e-05
2191991 5 22 12 12 9.707 137.720 -50.890 1.476e-05
31151994 8 10 2 2242.289 212.010 -17.470 1.473e-05
56211996 10 1 20 53 5.227 42.79059.030 1.466e-05
25371993 9 22 6 2446.811 271.20055.890 1.453e-05
79762000 2 1 3 2 9.913 140.07015.910 1.448e-05
80872000 4 29 10 722.875 100.230-4.810 1.445e-05
33451995 1 4 7 1839.025 303.260 -15.630 1.444e-05
11221991 11 27 4 22 8.235 269.14049.730 1.430e-05
75031999 4 3 9 48 2.937 298.870-5.050 1.418e-05
19891992 10 15 1 3632.386 123.04041.690 1.405e-05
64041997 9 30 0 059.234 281.450 -84.510 1.400e-05
38601995 10 11 21 3439.281 40.860 -57.580 1.387e-05
38931995 11 4 1 3742.833 40.39027.260 1.364e-05
25221993 9 10 12 12 8.219 167.590 -66.690 1.353e-05
21931993 2 14 18 1258.625 194.80026.770 1.336e-05
28121994 2 10 19 1316.953 152.29082.130 1.335e-05
56061996 9 17 22 2232.906 313.870 -33.890 1.332e-05
79382000 1 7 21 4433.273 285.760 -29.150 1.332e-05
36341995 6 8 22 3432.500 57.560 -53.600 1.326e-05
27901994 1 28 16 51 5.496 224.020 -15.220 1.316e-05
30031994 5 29 21 1856.156 214.84058.930 1.311e-05
66301998 3 6 17 3411.617 341.630 -56.740 1.310e-05
23871993 6 12 0 4417.666 103.070 -69.760 1.309e-05
3511991 6 14 1 5424.491 174.750 -12.950 1.294e-05
62661997 6 12 14 2824.906 290.23043.520 1.286e-05
14191992 2 18 18 4222.953 39.47027.470 1.284e-05
72771998 12 23 12 1115.043 191.94012.510 1.282e-05
2261991 5 25 19 2627.945 216.030 -62.820 1.264e-05
40391995 12 19 16 5119.730 240.79060.510 1.260e-05
21101992 12 30 8 5750.979 19.52017.210 1.249e-05
54131996 4 8 22 1227.469 85.040 1.880 1.219e-05
74771999 3 16 12 2859.512 102.450-6.200 1.214e-05
34641995 3 10 21 4635.055 344.19033.640 1.214e-05
33601995 1 17 1 36 1.713 285.21029.080 1.203e-05
75601999 5 10 8 49 6.297 207.510 -80.220 1.197e-05
72701998 12 19 9 2548.387 218.900 -43.610 1.189e-05
66421998 3 15 7 24 0.098 74.65031.570 1.177e-05
9071991 10 16 11 134.188 300.060-4.160 1.174e-05
15711992 4 29 18 5932.070 179.080 -14.330 1.167e-05
19971992 10 22 15 2059.457 253.780 -12.420 1.163e-05
21511993 1 31 18 5711.680 182.040-8.240 1.158e-05
17111992 7 20 3 12 4.162 203.02036.870 1.157e-05
57061996 12 6 4 4528.137 28.100 -36.330 1.157e-05
36631995 7 11 3 4949.105 85.810 -24.010 1.155e-05
63971997 9 25 22 4315.813 326.840-8.420 1.150e-05
11561991 12 9 16 2242.539 46.110 -31.300 1.149e-05
28771994 3 12 11 2822.680 221.500 -56.170 1.124e-05
4511991 6 27 4 2917.739 197.990-2.480 1.123e-05
36581995 7 1 6 3537.457 346.27037.740 1.106e-05
79322000 1 3 23 35 8.797 167.900-57.990 1.103e-05
24291993 7 5 12 39 8.188 283.080-39.240 1.100e-05
27701994 1 19 2 4210.714 326.560-71.630 1.095e-05
73901999 2 16 6 2945.594 274.940-40.340 1.091e-05
63801997 9 12 21 5224.289 181.280-23.460 1.089e-05
71851998 10 31 9 4144.547 278.250-24.570 1.083e-05

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