18 papers
X-ray Flaring and Variability in NGC 1275, the Heart of the Perseus Cluster
Sarah Ketchum, Jon M. Miller, S. W. Allen +6
NGC 1275 is the central galaxy in the Perseus Cluster. The active galactic nucleus (AGN) within NGC 1275 is notable for its strong and variable radio activity, tied to the producti…
Axion dark matter search with a photonic bandgap cavity haloscope and dielectric tuning rod over 10.25-10.45 GHz
Morgan Lynn, Ankur Agrawal, Arjun Ghosh +4
We report the development of a new widely tunable cavity and demonstrate its use in a search for dark matter axions. We achieve unloaded quality factors above , roughly $25…
The beamformed trigger of RNO-G: its design and in-field performance
G Collaboration, S. Agarwal, J. A. Aguilar +76
The Radio Neutrino Observatory in Greenland (RNO-G) is a neutrino detector under construction at Summit Station, with 8 out of a planned 35 stations currently deployed. We have des…
A 3D-Printed Millimeter-Wave Inline Waveguide-to-Coplanar-Waveguide Transition to Enable Dense Spectrometer Arrays for Intensity Mapping Surveys
Austin Stover, Juliang Li, Peter Sharpe +4
We present a 3D-printed millimeter-wave, octave-bandwidth, in-line waveguide-to-coplanar-waveguide transition designed to enable focal planes with dense arrays of on-chip spectrome…
Near-Threshold J/ Photoproduction and the Gluonic Gravitational Form Factors of the Proton
007 Collaboration, S. Joosten, Z. -E. Meziani +56
We report on the measurement of the two-dimensional differential cross section for near-threshold J/ photoproduction from the J/-007 experiment in Hall C at Jef…
The Carousel Lens I: A Spectroscopic Survey of the Carousel Lens Field
Jackson H. O'Donnell, Demetrius Y. Williams, Tesla E. Jeltema +19
We present a spectroscopic survey of field galaxies and lensed sources in the vicinity of the strong lensing galaxy cluster known as the Carousel lens at z=0.49. Using both Gemini/…