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60 papers · 1 filter
Asymptotic Giant Branch Stars in the Phoenix Dwarf Galaxy
John Menzies, Michael Feast, Patricia Whitelock +3
JHKs near-infrared photometry of stars in the Phoenix dwarf galaxy is presented and discussed. Combining these data with the optical photometry of Massey et al. allows a rather cle…
Different approaches to the second order Klein-Gordon equation
Karim A. Malik, David Seery, Kishore N. Ananda
We derive the Klein--Gordon equation for a single scalar field coupled to gravity at second order in perturbation theory and leading order in slow-roll. This is done in two ways: w…
Saturation of Transverse Energy per Charged Hadron and Freeze-Out Criteria in Heavy-Ion Collisions
J. Cleymans, R. Sahoo, D. K. Srivastava +1
For beam energies from SPS to RHIC, the transverse energy per charged particle, , saturates at a value of approximately 0.8 GeV. A direct connection between th…
Mass Models for Low Surface Brightness Galaxies with High Resolution Optical Velocity Fields
Rachel Kuzio de Naray, Stacy S. McGaugh, W. J. G. de Blok
We present high-resolution optical velocity fields from DensePak integral field spectroscopy, along with derived rotation curves, for a sample of low surface brightness galaxies. I…
A general test of the Copernican Principle
Chris Clarkson, Bruce A. Bassett, Teresa Hui-Ching Lu
The recent discovery of apparent cosmic acceleration has highlighted the depth of our ignorance of the fundamental properties of nature. It is commonly assumed that the explanation…
A note on the universality of the Hagedorn behavior of pp-wave strings
Alex Hamilton, Jeff Murugan, Andrea Prinsloo
Following on from recent studies of string theory on a one-parameter family of integrable deformations of proposed by Lunin and Maldacena, we carry out a syst…