Black hole winds

We show that black holes accreting at or above the Eddington rate probably produce winds which are optically thick in the continuum, whether in quasars or X-ray binaries. The photospheric radius and outflow speed are proportional to \mo^2 and \mo^-1 respectively, where \mo is the mass outflow rate. The outflow momentum rate is always of order L_Edd/c. Blackbody emission from these winds may provide the big blue bump in some quasars and AGN, as well as ultrasoft X-ray components in ULXs.

References(5)

Figures(0)

Ultraluminous x-ray sources in external galaxies

- Astrophys.J.Lett. 552 (2001) L109
•
e-Print:
- astro-ph/0104333
•
DOI:
- 10.1086/320343

High-redshift radio galaxies: At the crossroads

Steve Rawlings
(
- Oxford U.
)

- New Astron.Rev. 47 (2003) 397-404
•
e-Print:
- astro-ph/0303045
•
DOI:
- 10.1016/S1387-6473(03)00056-3

Chandra observation of luminous and ultraluminous x-ray binaries in M101

K. Mukai
(
- NASA, Goddard
)
,
W.D. Pence
(
- NASA, Goddard
)
,
S.L. Snowden
(
- NASA, Goddard
)
,
K.D. Kuntz
(
- Maryland U., Baltimore County
)

- Astrophys.J. 582 (2003) 184-189
•
e-Print:
- astro-ph/0209166
•
DOI:
- 10.1086/344639

A high velocity ionised outflow and soft x-ray photosphere in the narrow emission line quasar PG1211+143

K.A. Pounds
(
- Leicester U.
)
,
J.N. Reeves
(
- Leicester U. and
- NASA, Goddard
)
,
A.R. King
(
- Leicester U.
)
,
Kim L. Page
(
- Leicester U.
)
,
P.T. O'Brien
(
- Leicester U.
)

et al.

- Mon.Not.Roy.Astron.Soc. 345 (2003) 705
•
e-Print:
- astro-ph/0303603
•
DOI:
- 10.1046/j.1365-8711.2003.07006.x

Magnetohydrodynamical non-radiative accretion flows in two-dimensions

- Mon.Not.Roy.Astron.Soc. 322 (2001) 461
•
e-Print:
- astro-ph/0009233
•
DOI:
- 10.1046/j.1365-8711.2001.04138.x