Algebraically general and gravito-electric rotating dust

Rigidly rotating dust in general relativity

A solution to the Einstein field equations that represents a rigidly rotating dust accompanied by a thin matter shell of the same type is found.

Collisions of rigidly rotating disks of dust in General Relativity

Exact General Relativistic Rotating Disks Immersed in Rotating Dust Generated from van Stockum Solutions

A class of exact general relativistic rotating thick disks surrounded by rotating dust is constructed by applying the “displace, cut, fill and reflect” method on the van Stockum class of metrics. Two particular solutions are considered in detail. We find that the disks have annular regions with negative energy density and heat flow is present in most of the radial extension of the disk. It is s...

OnStephani's rotating dust solutions

Some years ago Stephani derived two classes of rotating dust solutions. In this paper Stephani's results are generalised to the case where the cosmological constant is non-zero. The solutions are of Petrov type D and the magnetic part of the Weyl tensor vanishes. The solutions involve seven arbitrary functions of a spacelike coordinate and in general they admit no Killing vectors. Nevertheless ...

Tentative Detection of Electric Dipole Emission from Rapidly Rotating Dust Grains

We present the first tentative detection of spinning dust emission from specific astronomical sources. All other detections in the current literature are statistical. The Green Bank 140 foot telescope was used to observe 10 dust clouds at 5, 8, and 10 GHz. In some cases, the observed emission was consistent with the negative spectral slope expected for free-free emission (thermal bremsstrahlung...