2,361 research outputs found
Some Consequences of the Baryonic Dark Matter Population
Microlensed double-image quasars have sent a consistent message that the
baryonic dark matter consists of a population of free-roaming planet mass
objects, as summarized previously. These were previously predicted to have
formed at the time of recombination, 300,000 years after the Big Bang, whence
they collapsed on a Kelvin Helmholz time scale. Today they are glimpsed as the
cometary knots in planetary nebulae. But they probably also nucleate the
mysterious Lyman-alpha clouds and cause a reduction in the transparency of the
universe to distant quasars and supernovae.Comment: Report to the Edinburgh International Dark Matter 2004 Symposiu
Direct Microlensing-Reverberation Observations of the Intrinsic magnetic Structure of AGN in Different Spectral States: A Tale of Two Quasars
We show how direct microlensing-reverberation analysis performed on two
well-known Quasars (Q2237 - The Einstein Cross and Q0957 - The Twin) can be
used to observe the inner structure of two quasars which are in significantly
different spectral states. These observations allow us to measure the detailed
internal structure of quasar Q2237 in a radio quiet high-soft state, and
compare it to quasar Q0957 in a radio loud low-hard state. We find that the
observed differences in the spectral states of these two quasars can be
understood as being due to the location of the inner radii of their accretion
disks relative to the co-rotation radii of rotating intrinsically magnetic
supermassive compact objects in the centers of these quasars.Comment: 26 page manuscript with 2 tables and 2 figures, submitted to
Astronomical Journa
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