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163 papers · 1 filter
Two ~35 day clocks in Her X-1: evidence for neutron star free precession
R. Staubert, D. Klochkov, K. Postnov +3
We present evidence for the existence of two ~35 day clocks in the Her X-1/HZ Her binary system. ~35 day modulations are observed 1) in the Turn-On cycles with two on- and two off-…
An 84 microGauss Magnetic Field in a Galaxy at Redshift z=0.692
Arthur M. Wolfe, Regina A. Jorgenson, Timothy Robishaw +2
The magnetic field pervading our Galaxy is a crucial constituent of the interstellar medium: it mediates the dynamics of interstellar clouds, the energy density of cosmic rays, and…
On the (Non)Evolution of HI Disks over Cosmic Time
J. Xavier Prochaska, Arthur M. Wolfe
We present new results on the frequency distribution of projected HI column densities f(N,X), total comoving covering fraction, and integrated mass densities rho_HI of high redshif…
MAMBO 1.2mm observations of luminous starbursts at z~2 in the SWIRE fields
C. J. Lonsdale, M. Polletta, A. Omont +19
We report on--off pointed MAMBO observations at 1.2 mm of 61 Spitzer-selected star-forming galaxies from the SWIRE survey. The sources are selected on the basis of bright 24um flux…
The transverse proximity effect in the z ~ 2 Lyman-alpha forest suggests QSO episodic lifetimes of ~1 Myr
David Kirkman, David Tytler
We look for signs of the H~I transverse proximity effect in the spectra of 130 QSO pairs, most with transverse separations in the plane of the sky of 0.1 -- 3 Mpc at z ~ 2.2. We ex…
CMB polarimetry with BICEP: instrument characterization, calibration, and performance
Yuki D. Takahashi, Denis Barkats, John O. Battle +22
BICEP is a ground-based millimeter-wave bolometric array designed to target the primordial gravity wave signature on the polarization of the cosmic microwave background (CMB) at de…