Computer Science – Sound
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006cxo..prop.2300f&link_type=abstract
Chandra Proposal ID #08628268
Computer Science
Sound
Chandra Proposal Id #08628268
Scientific paper
The IPN and Swift-localized GRB070125, the brightest radio afterglow seen in almost four years, exhibits a steep spectrum from GHz frequencies up to ~1 mm, indicating a dense local environment (n >~ 100 cm^-3) and an extreme isotropic-equivalent afterglow energy (~10^54 erg). Depending solely on the angle of collimation (i.e. "jet opening angle") derived for this burst, it may easily become the highest-energy release GRB seen to date, straining the capacity of collapsar models and sounding the death knell for the "standard energy reservoir" of GRBs (Frail et al., ApJ, 562, 2001). We have an extensive set of optical and radio data for this burst that show a likely jet break at t~5 days; at this same epoch, the X-ray afterglow fades below the detection limit of Swift. We request a single 30-ksec observation with Chandra to distinguish jet-break from no-break models for the X-ray emission, and therefore to enable measurement of the prompt and afterglow energies for this remarkable event.
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