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20 papers · 1 filter
Cataloging of the Digitized POSS-II, and Some Initial Scientific Results From It
S. G. Djorgovski, R. R. de Carvalho, R. R. Gal +3
We are conducting an effort to catalog all sources detected in the digitized POSS-II (DPOSS). This is now becoming an international collaboration including Caltech and the Observat…
The Tully-Fisher Relation and H_not
R. Giovanelli, M. Haynes, L. da Costa +3
The use of the Tully-Fisher (TF) relation for the determination of the Hubble Constant relies on the availability of an adequate template TF relation and of reliable primary distan…
Stationary Black Holes in a Generalized Three-Dimensional Theory of Gravity
P. M. Sá, J. P. S. Lemos
We consider a generalized three-dimensional theory of gravity which is specified by two fields, the graviton and the dilaton, and one parameter. This theory contains, as particular…
A Test of the Lauer--Postman Bulk Flow
Riccardo Giovanelli, Martha P. Haynes, Gary Wegner +3
We use Tully--Fisher distances for a sample of field late spiral galaxies to test the Lauer and Postman (1994; hereinafter LP) result suggestive of a bulk flow with respect to the…
Critical phenomena of collapsing massless scalar wave packets
Anzhong Wang, Henrique P. de Oliveira
An analytical model that represents the collapse of a massless scalar wave packet with continuous self-similarity is constructed, and critical phenomena are found. In the supercrit…
Taub's plane-symmetric vacuum spacetime revisited
M. L. Bedran, M. O. Calvao, I. Damiao Soares +1
The gravitational properties of the {\em only} static plane-symmetric vacuum solution of Einstein's field equations without cosmological term (Taub's solution, for brevity) are pre…