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Discovery of excess O I absorption towards the z = 6.42 QSO SDSS J1148+5251
George D. Becker, Wallace L. W. Sargent, Michael Rauch +1
We present a search for O I in the spectra of nine 4.9 < z_qso < 6.4 QSOs taken with Keck/HIRES. We detect six systems with N(O I) > 10^13.7 cm^{-2} in the redshift intervals where…
The afterglow of GRB050709 and the nature of the short-hard gamma-ray bursts
D. B. Fox, D. A. Frail, P. A. Price +33
The final chapter in the long-standing mystery of the gamma-ray bursts (GRBs) centres on the origin of the short-hard class, suspected on theoretical grounds to result from the coa…
Expansion and Collapse in the Cosmic Web
Michael Rauch, George D. Becker, Matteo Viel +5
We study the kinematics of the gaseous cosmic web at high redshift with Lyman alpha forest absorption in multiple QSO sightlines. Using a simple analytic model and a cosmological h…
Observations of Chemically Enriched QSO Absorbers near z ~ 2.3 Galaxies: Galaxy-Formation Feedback Signatures in the IGM
Robert A. Simcoe, Wallace L. W. Sargent, Michael Rauch +1
We present a study of galaxies and intergalactic gas toward the z=2.73 quasar HS1700+6416, to explore the effects of galaxy formation feedback on the IGM. Our observations and ioni…
The Quartic Higgs Coupling at Hadron Colliders
Tilman Plehn, Michael Rauch
The quartic Higgs self-coupling is the final measurement in the Higgs potential needed to fully understand electroweak symmetry breaking. None of the present or future colliders ar…
Tightening Constraints from the Lyman Alpha Forest with the Flux Probability Distribution Function
Adam Lidz, Katrin Heitmann, Lam Hui +3
The analysis of the Lyman-alpha forest of absorption lines in quasar spectra has emerged as a potentially powerful technique to constrain the linear matter power spectrum. In most…
An HST Study of the Supernovae Accompanying GRB 040924 and GRB 041006
A. M. Soderberg, S. R. Kulkarni, P. A. Price +23
We present the results from a {\it Hubble Space Telescope/ACS} study of the supernovae associated with gamma-ray bursts 040924 () and 041006 (). We find evidence th…
An HST Search for Supernovae Accompanying X-ray Flashes
A. M. Soderberg, S. R. Kulkarni, D. B. Fox +24
We present the results from an Hubble Space Telescope/ACS search for supernovae associated with X-ray flashes 020903, 040701, 040812 and 040916. We find strong evidence that XRF 02…