Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.1004m&link_type=abstract
American Astronomical Society, AAS Meeting #211, #10.04; Bulletin of the American Astronomical Society, Vol. 39, p.742
Astronomy and Astrophysics
Astronomy
Scientific paper
Very early measurements of SN 1987A can be interpreted in terms of an intense beam of light and jet of particles (BJ), which still ran ahead of a slower, cooler, shrouding flow, cooled itself, or lost the ability to do so, before impacting polar ejecta (PE) remaining from the previous binary merger which formed Sk -69 202. The photon beam scattered off/reprocessed in, without significantly penetrating, the PE, producing 2e39 ergs/s for about a day at day 8.0, the SAME delay PREDICTED from the 59 mas offset (17 light-days in projection) of the "Mystery Spot" (MS), and the ring/bipolar geometry. This scattered flux then decayed for a day with a timescale consistent with the UV flash, after which the luminosity rebounded to the day 8.0 value by day 10.0, and continued rising linearly with time, indicating: (1) particles from the jet penetrating into the PE, with (2) the fastest traveling in excess of 0.9 c, and (3) that both the beam and jet had collimation factors in excess of 10,000. How these early measurements constrain the physical parameters of the BJ, its angle from our line of sight, and the content and depth of the PE, and are related to the formation of 99% of millisecond pulsars, gamma-ray bursts and SNe, with the exception of SN 1986J and the more recent and distant SN 2006gy, and the potential for systematic effects in SN Ia cosmology, will be further explored in this poster paper.
Middleditch John
Perez Mario R.
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