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A Large X-ray Sample of Fossil Groups
Eric D. Miller, Eli Rykoff, Renato de Alencar Dupke +3
We present Chandra snapshot observations of the first large X-ray sample of optically identified fossil groups. For 9 of 14 candidate groups, we are able to determine the X-ray lum…
Swift monitoring of Cygnus X-2: investigating the NUV-X-ray connection
E. S. Rykoff, E. M. Cackett, J. M. Miller
The neutron star X-ray binary (NSXRB) Cygnus X-2 was observed by the Swift satellite 51 times over a 4 month period in 2008 with the XRT, UVOT, and BAT instruments. During this cam…
Multi-wavelength observations of the energetic GRB 080810: detailed mapping of the broadband spectral evolution
K. L. Page, R. Willingale, E. Bissaldi +31
GRB 080810 was one of the first bursts to trigger both Swift and the Fermi Gamma-ray Space Telescope. It was subsequently monitored over the X-ray and UV/optical bands by Swift, in…
Precision Measurements of the Cluster Red Sequence using an Error Corrected Gaussian Mixture Model
Jiangang Hao, Benjamin P. Koester, Timothy A. Mckay +10
The red sequence is an important feature of galaxy clusters and plays a crucial role in optical cluster detection. Measurement of the slope and scatter of the red sequence are affe…
Looking Into the Fireball: ROTSE-III and Swift Observations of Early GRB Afterglows
E. S. Rykoff, F. Aharonian, C. W. Akerlof +21
We report on a complete set of early optical afterglows of gamma-ray bursts (GRBs) obtained with the ROTSE-III telescope network from March 2005 through June 2007. This set is comp…
Low-Energy Astrophysics: Stimulating the Reduction of Energy Consumption in the Next Decade
P. J. Marshall, N. Bennert, E. S. Rykoff +27
In this paper we address the consumption of energy by astronomers while performing their professional duties. Although we find that astronomy uses a negligible fraction of the US e…
Cosmological Constraints from the SDSS maxBCG Cluster Catalog
Eduardo Rozo, Risa H. Wechsler, Eli S. Rykoff +11
We use the abundance and weak lensing mass measurements of the SDSS maxBCG cluster catalog to simultaneously constrain cosmology and the richness--mass relation of the clusters. As…