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Search for sub-solar mass ultracompact binaries in Advanced LIGO's second observing run
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1187
We present an Advanced LIGO and Advanced Virgo search for sub-solar mass ultracompact objects in data obtained during Advanced LIGO's second observing run. In contrast to a previou…
Polarization Diagnostics for Cool Core Cluster Emission Lines
William B. Sparks, James E. Pringle, Robert F. Carswell +6
The nature of the interaction between low-excitation gas filaments at ~10^4 K, seen in optical line emission, and diffuse X-ray emitting coronal gas at ~10^7 K in the centers of ga…
Hundred Thousand Degree Gas in the Virgo Cluster of Galaxies
W. B. Sparks, J. E. Pringle, R. F. Carswell +6
The physical relationship between low-excitation gas filaments at ~10^4 K, seen in optical line emission, and diffuse X-ray emitting coronal gas at ~10^7 K in the centers of many g…
Nicmos Polarimetry of "Polar Scattered" Seyfert 1 Galaxies
D. Batcheldor, A. Robinson, D. J. Axon +5
The nuclei of Seyfert 1 galaxies exhibit a range of optical polarization characteristics that can be understood in terms of two scattering regions producing orthogonal polarization…
An Upper Limit on the Stochastic Gravitational-Wave Background of Cosmological Origin
The LIGO Scientific Collaboration, the Virgo Collaboration
A stochastic background of gravitational waves is expected to arise from a superposition of a large number of unresolved gravitational-wave sources of astrophysical and cosmologica…