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7 papers · 1 filter
The Detectability Lemma and Quantum Gap Amplification
Dorit Aharonov, Itai Arad, Zeph Landau +1
The quantum analogue of a constraint satisfaction problem is a sum of local Hamiltonians - each local Hamiltonian specifies a local constraint whose violation contributes to the en…
A shift in Jupiter's equatorial haze distribution imaged with the Multi-Conjugate Adaptive Optics Demonstrator at the VLT
Michael H. Wong, Franck Marchis, Enrico Marchetti +4
Jupiter was imaged during the Science Demonstration of the MCAO Demonstrator (MAD) at the European Southern Observatory's UT3 Very Large Telescope unit. Io and Europa were used as…
Resolved Properties of Extragalactic Giant Molecular Clouds
Alberto D. Bolatto, Adam K. Leroy, Erik Rosolowsky +2
Giant molecular clouds (GMCs) are the major reservoirs of molecular gas in galaxies, and the starting point for star formation. As such, their properties play a key role in setting…
Candidate AGNs in Late-Type Galaxies
Louis-Benoit Desroches, Luis Ho
We have assembled a sample of 64 late-type spiral galaxies (T types 6.0-9.0, corresponding to Hubble types Scd-Sm) with archival Chandra data. At a signal-to-noise (S/N) threshold…
Lower Bounds on the Rate-Distortion Function of LDGM Codes
A. G. Dimakis, M. J. Wainwright, K. Ramchandran
A recent line of work has focused on the use of low-density generator matrix (LDGM) codes for lossy source coding. In this paper, wedevelop a generic technique for deriving lower b…
Fuel for Galaxy Disks
M. E. Putman, J. Grcevich, J. E. G. Peek
Halo clouds have been found about the three largest galaxies of the Local Group and in the halos of nearby spirals. This suggests they are a relatively generic feature of the galax…