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239 papers · 1 filter
A photometric study of the southern Blazhko star SS For Unambiguous detection of quintuplet components
Katrien Kolenberg, Elisabeth Guggenberger, Thebe Medupe +6
We present our analysis of photometric data in the Johnson B and V filter of the southern Blazhko star SS For. In parallel, we analyzed the V observations obtained with the ASAS-3…
A characteristic signature of fourth order gravity
Kishore N. Ananda, Sante Carloni, Peter K. S. Dunsby
We present for the first time the complete matter power spectrum for gravity which has been derived from the fourth order scalar perturbation equations. This leads to the dis…
AGB Stars in the Fornax Dwarf Spheroidal Galaxy
Patricia A. Whitelock, John W. Menzies, Michael W. Feast +3
We report on a multi-epoch study of the Fornax dwarf spheroidal galaxy, made with the Infrared Survey Facility, over an area of about 42'x42'. The colour-magnitude diagram shows a…
The cosmological background of vector modes
Teresa Hui-Ching Lu, Kishore Ananda, Chris Clarkson +1
We investigate the spectrum of vector modes today which is generated at second order by density perturbations. The vector mode background that is generated by structure formation i…
The Seventh Data Release of the Sloan Digital Sky Survey
K. Abazajian
This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDS…
Dark matter and dark energy proposals: maintaining cosmology as a true science?
George F. R. Ellis
I consider the relation of explanations for the observed data to testability in the following contexts: observational and experimental detection of dark matter; observational and e…