Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994pasj...46l.147k&link_type=abstract
PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 46, no. 4, p. L147-L150
Astronomy and Astrophysics
Astronomy
43
Doppler Effect, Emission Spectra, Iron, Plasma Jets, X Ray Astronomy, X Ray Binaries, X Ray Spectra, Charge Coupled Devices, Imaging Spectrometers, Optical Emission Spectroscopy, Radial Velocity, Satellite-Borne Instruments, Silicon, Sulfur
Scientific paper
We 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.
Aoki Takashi
Doty John
Kawai Nobuyuki
Kotani Taro
Matsuoka Masaru
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