Comet C/1996 B2 (Hyakutake)

M.J. Mumma, V.A. Krasnopolsky, M. Abbott

IAU Circ., 6696, 2 (1997). Edited by Marsden, B. G.

Abstract

We searched for soft x-ray radiation from comet C/1996 B2 on 1996 Mar. 21-24 (r = 1.11-1.05 AU, Delta = 0.15-0.105 AU), using the Extreme Ultraviolet Explorer orbiting observatory. An image of soft x-rays in the range 70-180 eV was obtained with the Deep Survey Camera. It shows crescent-shaped emission with total luminosity of 1.0 x 10^25 photon/s within an aperture radius of 120 000 km. The emission is offset by 42 000 km sunward from the nucleus in the sky plane. Spectra were acquired over the range 7-70 nm (180-18 eV) and show both spectral lines and continuum emission.

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