Measuring the beaming angle of GRB 030329 by fitting the rebrightenings in its multiband afterglow
نویسندگان
چکیده
منابع مشابه
Modeling the Optical Afterglow of GRB 030329
The best-sampled afterglow light curves are available for GRB 030329. A distinguishing feature of this event is the obvious rebrightening at around 1.6 days after the burst. Proposed explanations for the rebrightening mainly include the two-component jet model and the refreshed shock model, although a sudden density-jump in the circumburst environment is also a potential choice. Here we reexami...
متن کاملThe X - ray afterglow of GRB 030329
the date of receipt and acceptance should be inserted later Abstract. We report on XMM-Newton and Rossi-XTE observations of the bright (fluence ∼ 10 −4 erg cm −2) and nearby (z=0.1685) Gamma-Ray Burst GRB030329 associated to SN2003dh. The first Rossi-XTE observation, 5 hours after the burst, shows a flux decreasing with time as a power law with index 0.9±0.3. Such a decay law is only marginally...
متن کاملRotse-iii Observations of the Early Afterglow from Grb 030329
Using two identical telescopes at widely separated longitudes, the ROTSE-III network observed decaying emission from the remarkably bright afterglow of gamma-ray burst GRB 030329. In this report we present observations covering 56% of the period from 1.5 to 47 hr after the burst. We find that the light curve is piecewise consistent with a power-law decay. When the ROTSE-III data are combined wi...
متن کاملRadio Observations of the Afterglow of GRB 030329
We present the results of the radio observations of the afterglow of GRB 030329 with the Nobeyama 45-m telescope. The observations were made at 23.5 GHz, 43 GHz, and 90 GHz. The light curves show steep decline after constant phase. The start time of the decline depends on frequency. Namely, the decline started earlier at higher frequency. The spectrum has a peak at mm wavelength range. The peak...
متن کاملLate evolution of the X – ray afterglow of GRB 030329
The X–ray afterglow of the Gamma-Ray Burst GRB 030329 , associated to SN2003dh at z=0.1685, has been observed with XMM–Newton 258 days after the burst explosion. A source with flux of (6.2±2.3)×10 erg cm s (0.5-2 keV) has been detected at the GRB position. This measurement, together with a re–analysis of the previous X–ray observations, indicates a flattening of the X–ray light curve ∼40 days a...
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ژورنال
عنوان ژورنال: Research in Astronomy and Astrophysics
سال: 2010
ISSN: 1674-4527
DOI: 10.1088/1674-4527/10/11/004