1999A&A...347...92S


Query : 1999A&A...347...92S

1999A&A...347...92S - Astronomy and Astrophysics, volume 347, 92-98 (1999/7-1)

SCUBA sub-millimeter observations of gamma-ray bursters. I. GRB 970508, 971214, 980326, 980329, 980519, 980703, 981220, 981226.

SMITH I.A., TILANUS R.P.J., VAN PARADIJS J., GALAMA T.J., GROOT P.J., VREESWIJK P., KOUVELIOTOU C., WIJERS R.A.M.J. and TANVIR N.

Abstract (from CDS):

We discuss our ongoing program of Target of Opportunity observations of gamma-ray bursts (GRBs) using the SCUBA instrument on the James Clerk Maxwell Telescope. We present observations of GRB 970508, 971214, 980326, 980329, 980519, 980703, 981220, and 981226. Our most important result to date is the detection of a fading counterpart to GRB 980329 at 850µm. Although it proved to be difficult to find the infrared counterpart to this burst, the sub-millimeter flux was relatively bright. This indicates that the brightness of this counterpart (corrected for absorption) was very similar to GRB 970508. The radio through sub-millimeter spectrum of GRB 980329 is well fit by a power law with index α= +0.9. However, we cannot exclude a ν1/3 power law attenuated by synchrotron self-absorption. An α~+1 VLA-SCUBA power law spectrum is definitely ruled out for GRB 980703, and possibly also for GRB 980519. We cannot rule out that part of the sub-millimeter flux from GRB 980329 comes from a dusty star-forming galaxy at high redshift, such as the ones recently discovered by SCUBA. Any quiescent dust contribution will be much larger at sub-millimeter than at radio wavelengths. Both a high redshift and large dust extinction would help explain the reddening of the counterpart to GRB 980329. The large intensity of this burst might then indicate that beaming is important.

Abstract Copyright:

Journal keyword(s): gamma rays: bursts - radio continuum: general - infrared: general

CDS comments: par.3.2: possible quiescent host to OT 19971214 = [KDR98] K. par.3.6: underlying galaxy to OT 19980703 = [DKB98] G. par.3.7: [GVV98] J034228.98+170914.7. par.3.8: [CG98] J232935.0-235542.

Simbad objects: 20

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Number of rows : 20
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 [GVV98] J034228.98+170914.7 Rad 03 42 28.94 +17 09 14.6           ~ 3 0
2 GRB 981220 gB 03 42 33.8 +17 09 00           ~ 47 0
3 GRB 970508 gB 06 53 49.2 +79 16 19           ~ 854 1
4 NAME VLA 070238.0+385044 Rad 07 02 38.0 +38 50 44           ~ 6 0
5 GRB 980329 gB 07 02 41 +38 50.7           ~ 267 1
6 GRB 980326 gB 08 36 34.3 -18 51 24           ~ 259 0
7 SAX J1156.4+6513 X 11 56 25 +65 13.2           ~ 6 0
8 GRB 971214 gB 11 56 26.4 +65 12 01           ~ 437 1
9 NAME GB 971214 OT ? 11 56 26.46 +65 12 00.6           ~ 5 0
10 [LDM2003] GRB J115626.4+651200 G 11 56 26.55 +65 12 00.7           ~ 19 1
11 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 973 1
12 OT 19980519 Rad 23 22 21.49 +77 15 43.3           ~ 7 0
13 GRB 980519 gB 23 22 21.5 +77 15 43           ~ 197 0
14 SAX J2322.3+7716 X 23 22 22 +77 16.1           ~ 3 0
15 [CG98] J232935.0-235542 IR 23 29 35.0 -23 55 42           ~ 2 0
16 SAX J2329.6-2356 X 23 29 36.1 -23 55 57           ~ 5 0
17 GRB 981226 gB 23 29 37.2 -23 55 54           ~ 101 1
18 [LDM2003] GRB J235906.7+083507 G 23 59 06.7 +08 35 07   23.04 23.02     ~ 23 1
19 GRB 980703 gB 23 59 06.7 +08 35 07           ~ 431 1
20 OT 19980703 Rad 23 59 06.744 +08 35 07.29           ~ 6 0

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2022.05.22-00:04:34

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