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52 papers · 1 filter
Global 21-cm Signal Extraction from Foreground and Instrumental Effects II: Efficient and Self-Consistent Technique for Constraining Nonlinear Signal Models
David Rapetti, Keith Tauscher, Jordan Mirocha +1
We present the completion of a data analysis pipeline that self-consistently separates global 21-cm signals from large systematics using a pattern recognition technique. In the fir…
Broadband, millimeter-wave antireflection coatings for large-format, cryogenic aluminum oxide optics
A. Nadolski, J. D. Vieira, J. A. Sobrin +86
We present two prescriptions for broadband (~77 - 252 GHz), millimeter-wave antireflection coatings for cryogenic, sintered polycrystalline aluminum oxide optics: one for large-for…
A LOFAR radio search for single and periodic pulses from M31
Joeri van Leeuwen, Klim Mikhailov, Evan Keane +5
Bright, short radio bursts are emitted by sources at a large range of distances: from the nearby Crab pulsar to remote Fast Radio Bursts (FRBs). FRBs are likely to originate from d…
The Dynamics of Interstellar Asteroids and Comets within the Galaxy: an Assessment of Local Candidate Source Regions for 1I/`Oumuamua and 2I/Borisov
Tim Hallatt, Paul Wiegert
The low velocity of interstellar asteroid 1I/'Oumuamua with respect to our galaxy's Local Standard of Rest implies it is young. Adopting the young age hypothesis, we assess possibl…
Prompt X-ray emission from Fast Radio Bursts -- Upper limits with AstroSat
Akash Anumarlapudi, Varun Bhalerao, Shriharsh P. Tendulkar +1
Fast Radio Bursts (FRBs) are short lived ( msec), energetic transients (having a peak flux density of Jy) with no known prompt emission in other energy bands. We prese…
Mitigating Internal Instrument Coupling II: A Method Demonstration with the Hydrogen Epoch of Reionization Array
Nicholas S. Kern, Aaron R. Parsons, Joshua S. Dillon +63
We present a study of internal reflection and cross coupling systematics in Phase I of the Hydrogen Epoch of Reionization Array (HERA). In a companion paper, we outlined the mathem…