High Energy Transient Explorer 2 Observations of the Extremely Soft X-Ray Flash XRF 020903

• Published in: The Astrophysical journal Vol. 602; no. 2; pp. 875 - 885
• Main Authors: Sakamoto, T, Lamb, D. Q, Graziani, C, Donaghy, T. Q, Suzuki, M, Ricker, G, Atteia, J.-L, Kawai, N, Yoshida, A, Shirasaki, Y, Tamagawa, T, Torii, K, Matsuoka, M, Fenimore, E. E, Galassi, M, Tavenner, T, Doty, J, Vanderspek, R, Crew, G. B, Villasenor, J, Butler, N, Prigozhin, G, Jernigan, J. G, Barraud, C, Boer, M, Dezalay, J.-P, Olive, J.-F, Hurley, K, Levine, A, Monnelly, G, Martel, F, Morgan, E, Woosley, S. E, Cline, T, Braga, J, Manchanda, R, Pizzichini, G, Takagishi, K, Yamauchi, M
• Format: Journal Article
• Language: English
• Published: IOP Publishing 20.02.2004

We report High Energy Transient Explorer 2 (HETE-2) Wide Field X-Ray Monitor/French Gamma Telescope observations of the X-ray flash XRF 020903. This event was extremely soft: the ratio log(S sub(X)/S sub(gamma)) = 0.7, where S sub(X) and S sub(gamma) are the fluences in the 2-30 and 30-400 keV energ...