Linking Outer Disk Pebble Dynamics and Gaps to Inner Disk Water Enrichment

Inner disk oscillations

The RXTE observations of GRS 1915+105 have given a new impulse to the study of spectral and timing properties of the X-ray emission of black hole candidates. At variance with any other known source, GRS 1915+105 shows dramatic changes on time scales as short as a tenth of a second. These changes are associated to marked spectral changes which have been interpreted as changes of the observable i...

An Inner Disk Cluster

Dynamics of Rolling Disk

In the paper we present the qualitative analysis of rolling motion without slipping of a homogeneous round disk on a horisontal plane. The problem was studied by S. A. Chaplygin, P. Appel and D. Korteweg who showed its integrability. The behavior of the point of contact on a plane is investigated and conditions under which its trajectory is finit are obtained. The bifurcation diagrams are const...

Inner disk regions revealed by infrared interferometry

I review the results obtained by long-baseline interferometry at infrared wavelengths on the innermost regions around young stars. These observations directly probe the location of the dust and gas in the disks. The characteristic sizes of these regions found are larger than previously thought. These results have motivated in part a new class of models of the inner disk structure. However the p...

The inner accretion disk in M 87

The observed AGN in M87 is extremely quiescent compared to expectations based upon simple estimates for the mass accretion rate. We examine the possibility that the nal stages of accretion are advection dominated by comparing current observational constraints on the ux from the M87 core to the predictions of an advection dominated accretion ow (ADAF) model. We nd that the observed self-absorbed...