The Structure of the Accretion Disk in the ADC Source 4U 1822-371

Details The Structure of the Accretion Disk in the ADC Source 4U 1822-371 The Structure of the Accretion Disk in the ADC Source 4U 1822-371

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1248..141b&link_type=abstract

X-RAY ASTRONOMY 2009; PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES: Proceedings of the International Confer

Astronomy and Astrophysics

Astronomy

X-Ray Binary Stars, Accretion Disks, Neutron Stars, Photometry, Photosphere, X-Ray Binaries, Infall, Accretion, And Accretion Disks, Neutron Stars, Photography And Photometry, Stellar Atmospheres, Radiative Transfer, Opacity And Line Formation

Scientific paper

The low-mass X-ray binary (LMXB) 4U 1822-371 has an accretion disk corona (ADC) that scatters X-ray photons from the inner disk and neutron star out of the line of sight. It has a high orbital inclination and the secondary star eclipses the disk and ADC.
We have obtained new time-resolved UV spectrograms and V- and J-band photometry of 4U 1822-371. The large quadratic term in our new optical eclipse ephemeris confirms that the system has an extremely high rate of mass transfer and mass accretion. The CIV λλ = 1548-1550 Å emission line has a half width of ~4400 km/s, indicating a strong, high velocity wind is being driven off the accretion disk. Near the disk the wind is optically thick in UV, V, and J and the eclipse analysis shows that in V and J the optically thick wind extends nearly to the outer edge of the disk. The ADC must also extend vertically to a height equal to approximately half the disk radius.

Affiliated with

Also associated with

No associations

Rating

The Structure of the Accretion Disk in the ADC Source 4U 1822-371 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Structure of the Accretion Disk in the ADC Source 4U 1822-371, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Structure of the Accretion Disk in the ADC Source 4U 1822-371 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1644320