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Discovery of the double Doppler-shifted emission-line systems in the X-ray spectrum of SS 433We have used the CCD X-ray spectrometers on ASCA and resolved the X-ray emission line from the jet of SS 433 both into Doppler-shifted components with two distinct velocities, and into emission from different ionization states of iron, i.e., Fe XXV and Fe XXVI. This is the first direct detection of the two Doppler shifted beams in the X-ray spectra of SS 433 and allows the radial velocity of the jet along the line of sight to be determined with an accuracy comparable to the optical spectroscopy. We also found pairs of emission lines from other atomic species, such as ionized silicon and sulfur, with the Doppler shifts consistent with each other. This confirms the origin of the X-ray emission in the high temperature plasma in the jets.
Document ID
19950036817
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kotani, Taro
(Inst. of Space and Astronautical Science Kanagawa, Japan)
Kawai, Nobuyuki
(Inst. of Physical and Chemical Research Saitama, Japan)
Aoki, Takashi
(Inst. of Space and Astronautical Science Kanagawa, Japan)
Doty, John
(Massachusetts Inst. of Technology, Cambridge, MA United States)
Matsuoka, Masaru
(Inst. of Physical and Chemical Research Saitama, Japan)
Mitsuda, Kazuhisa
(Inst. of Space and Astronautical Science Kanagawa, Japan)
Nagase, Fumiaki
(Inst. of Space and Astronautical Science Kanagawa, Japan)
Ricker, George
(Massachusetts Inst. of Technology, Cambridge, MA United States)
White, Nick E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1994
Publication Information
Publication: PASJ: Publications of the Astronomical Society of Japan
Volume: 46
Issue: 4
ISSN: 0004-6264
Subject Category
Astronomy
Accession Number
95A68416
Distribution Limits
Public
Copyright
Other

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