Kavli Affiliate: Peter W. Graham | First 5 Authors: Ariel Arza, Michael A. Fedderke, Peter W. Graham, Derek F. Jackson Kimball, Saarik Kalia | Summary: We demonstrate that ultralight axion dark matter with a coupling to photons induces an oscillating global terrestrial magnetic field signal in the presence of the background geomagnetic field of the […]
Kavli Affiliate: Sven Herrmann | First 5 Authors: Elena Orlando, Eugenio Bottacini, Alexander Moiseev, Arash Bodaghee, Werner Collmar | Summary: The sky at MeV energies is currently poorly explored. Here we present an innovative mission concept and we outline the scientific motivation for combining a coded mask and a Compton telescope. The Galactic Explorer with […]
Kavli Affiliate: Seth Digel | First 5 Authors: Elena Orlando, Eugenio Bottacini, Alexander Moiseev, Arash Bodaghee, Werner Collmar | Summary: The sky at MeV energies is currently poorly explored. Here we present an innovative mission concept that builds on and improves past and currently proposed missions at such energies. We outline the motivations for combining […]
Kavli Affiliate: Bruce Macintosh | First 5 Authors: Avi Kaplan-Lipkin, Bruce Macintosh, Alexander Madurowicz, Sowmya Krishnamurthy, Alexander Shapiro | Summary: Astrometric detection of exoplanets by stellar reflex motion will be made possible for giant planets by the recent Gaia mission and for Earth-like planets by proposed missions such as LUVOIR. At the theoretical limits, astrometry […]
Kavli Affiliate: Bruce Macintosh | First 5 Authors: Avi Kaplan-Lipkin, Bruce Macintosh, Alexander Madurowicz, Krishnamurthy Sowmya, Alexander Shapiro | Summary: Astrometry has long been a promising technique for exoplanet detection. At the theoretical limits, astrometry would allow for the detection of smaller planets than previously seen by current exoplanet search methods, but stellar activity may […]
Kavli Affiliate: Tom Abel | First 5 Authors: Yunchong Wang, Arka Banerjee, Tom Abel, ., | Summary: Distances to the $k$-nearest-neighbor ($k$NN) data points from volume-filling query points are a sensitive probe of spatial clustering. Here we present the first application of $k$NN summary statistics to observational clustering measurement, using the 1000 richest redMaPPer clusters […]
Kavli Affiliate: Roger D. Blandford | First 5 Authors: Elena M. Murchikova, Tianshu Wang, Brian Mason, Roger D. Blandford, | Summary: Murchikova et al 2019 discovered a disk of cool ionized gas within 20,000 Schwarzschild radii of the Milky Way’s Galactic Center black hole Sagittarius A*. They further demonstrated that the ionizing photon flux in […]
Kavli Affiliate: Risa H. Wechsler | First 5 Authors: John F. Wu, J. E. G. Peek, Erik J. Tollerud, Yao-Yuan Mao, Ethan O. Nadler | Summary: We present "Extending the Satellites Around Galactic Analogs Survey" (xSAGA), a method for identifying low-$z$ galaxies on the basis of optical imaging, and results on the spatial distributions of […]
Kavli Affiliate: C. L. Kuo | First 5 Authors: J. P. Filippini, A. E. Gambrel, A. S. Rahlin, E. Y. Young, P. A. R. Ade | Summary: Experiments deploying large arrays of transition-edge sensors (TESs) often require a robust method to monitor gain variations with minimal loss of observing time. We propose a sensitive and […]