activity
20122026
most citedAbsolute calibration of a wideband antenna and spectrometer for sky noise spectral index measurements

84 citations · 216 across the 25 of their papers we have counts for

collaborators

26 papers

astro-ph.IM2026

The MegaWave Radio Surveyor

T. Joseph W. Lazio, Evgenya Shkolnik, James Aguirre +40

Several Decadal-level questions in astrophysics, exoplanets, astrobiology, and cosmology can be addressed only at low radio frequencies inaccessible from Earth. The MegaWave Radio…

astro-ph.CO2026

Measurement of All-sky Neutral hydrogen Absorption Spectrum (MANAS)

Vinand Prayag, Nivedita Mahesh, Gregg Hallinan +7

MANAS is a single antenna, ground-based platform built to measure the sky averaged ('global') redshifted 21-cm signal from Cosmic Dawn. The cosmological signal is expected as a ~ 1…

astro-ph.SR2026

Summary of the First Year of the Space Weather Around Young Suns Program: 900 Hours of Low-frequency Radio and Optical Data Dedicated to Young, Solar-type Stars

Ivey Davis, Gregg Hallinan, Nikita Kosogorov +51

The Space Weather Around Young Suns (SWAYS) program was introduced in \citet{Davis2025} as a multi-wavelength monitoring program for studying the activity and particle environments…

astro-ph.IM2026

All-Sky Ultra-Narrowband Spectral Imaging with the OVRO-LWA: Technosignature Constraints and Axion-Like Particle Prospects

Nikita Kosogorov, Gregg Hallinan, Greg Hellbourg +46

We present an imaging-domain search for technosignatures at decametric wavelengths with the OVRO-LWA, targeting ultra-narrowband continuous-wave signals between 50 and 86 MHz. We i…

astro-ph.IM2026

The EDGES Analysis Pipeline: Description and Validation

Steven G. Murray, Nivedita Mahesh, Akshatha K. Vydula +7

The sky-averaged redshifted 21-cm signal from Cosmic Dawn is expected to provide a unique view of the first compact objects. However, its measurement remains daunting. Difficulties…

astro-ph.SR2026

Implementation of a Near-Realtime Recording and Reporting System of Solar Radio Bursts

Peijin Zhang, Anastasia Kuske, Bin Chen +48

Strong solar activity is often accompanied by a variety of radio bursts. These bursts are valuable diagnostics of coronal and heliospheric processes and also have potential applica…

astro-ph.IM2026

A Commensal Radio-Only Cosmic Ray Detector at the Owens Valley Radio Observatory Long Wavelength Array

Kathryn A. Plant, Andrew Romero-Wolf, Gregg Hallinan +46

The brief (10 nanoseconds) transient radio emission from cosmic ray air showers carries key information about the energy and mass composition of high energy cosmic rays, but anthro…

astro-ph.SR2026

Estimating Electron Densities in the Middle Solar Corona using White-light and Radio Observations

Surajit Mondal, Shaheda Begum Shaik, Russell A. Howard +45

The electron density of the solar corona is a fundamental parameter in many areas of solar physics. Traditionally, routine estimates of coronal density have relied exclusively on w…

astro-ph.IM2026

The FarView Low Frequency Radio Array on the Moon's Far Side: Science and Array Architecture

Jack O. Burns, Judd Bowman, Tzu-Ching Chang +8

FarView is a proposed low frequency radio interferometer for deployment on the lunar far side, enabled by the Moon's radio quiet environment. Operating over 1-50 MHz inaccessible f…

astro-ph.HE2025

Searches for Prompt Low-Frequency Radio Counterparts to Gravitational Wave Event S250206dm with the OVRO-LWA Time Machine

Nikita Kosogorov, Gregg Hallinan, Casey Law +46

We report on a search for prompt, low-frequency radio emission from the gravitational-wave (GW) merger S250206dm using the Owens Valley Radio Observatory Long Wavelength Array (OVR…

astro-ph.CO2025★ 3 cited

Exploring One-point Statistics in HERA Phase I Data: Effects of Foregrounds and Systematics on Measuring One-Point Statistics

Honggeun Kim, Jacqueline N. Hewitt, Nicholas S. Kern +61

Measuring one-point statistics in redshifted 21 cm intensity maps offers an opportunity to explore non-Gaussian features of the early universe. We assess the impact of instrumental…

astro-ph.IM2025

Polarisation Performance of Offset Phase Antennas: A Study for FARSIDE

Nivedita Mahesh, Judd D Bowman, Bharat Gehlot +1

Several radio telescopes have been planned or proposed to be deployed on the Lunar farside in the coming years. These will observe the unexplored ultra-long wavelengths of the elec…

astro-ph.SR2025

Enigmatic centi-SFU and mSFU nonthermal radio transients detected in the middle corona

Surajit Mondal, Bin Chen, Sijie Yu +43

Decades of solar coronal observations have provided substantial evidence for accelerated particles in the corona. In most cases, the location of particle acceleration can be roughl…

astro-ph.SR2025

Possible First Detection of Gyroresonance Emission from a Coronal Mass Ejection in the Middle Corona

Surajit Mondal, Bin Chen, Xingyao Chen +45

Routine measurements of the magnetic field of coronal mass ejections (CMEs) have been a key challenge in solar physics. Making such measurements is important both from a space weat…

astro-ph.SR2025

Measuring the Magnetic Field of a Coronal Mass Ejection from Low to Middle Corona

Xingyao Chen, Bin Chen, Sijie Yu +44

A major challenge in understanding the initiation and evolution of coronal mass ejections (CMEs) is measuring the magnetic field of the magnetic flux ropes (MFRs) that drive CMEs.…

astro-ph.IM2025

Studying Exoplanets in the Radio from the Moon

Jake D. Turner, Jack O. Burns, David Rapetti +12

Exoplanets with and without a magnetic field are predicted to form, behave, and evolve very differently. Therefore, there is great need to directly constrain these fields to holist…

astro-ph.IM2025

EDGES-3: Instrument Design and Commissioning

Rigel C. Cappallo, Alan E. E. Rogers, Colin J. Lonsdale +10

EDGES-3 is the third iteration of the EDGES experiment, designed to measure the predicted global absorption feature in the radio spectrum produced by neutral hydrogen gas at cosmic…

astro-ph.CO2025★ 1 cited

Can high-redshift AGN observed by JWST explain the EDGES absorption signal?

Alexandra Nelander, Christopher Cain, Jordan C J DSilva +3

The Experiment to Detect the Global Epoch of Reionization 21 cm Signal (EDGES) has reported evidence for an absorption feature in the sky-averaged radio background near 78 MHz. A c…

astro-ph.SR2025

Probing the Turbulent Corona and Heliosphere Using Radio Spectral Imaging Observation during the Solar Conjunction of Crab Nebula

Peijin Zhang, Surajit Mondal, Bin Chen +41

Measuring plasma parameters in the upper solar corona and inner heliosphere is challenging because of the region's weakly emissive nature and inaccessibility for most in situ obser…

astro-ph.CO2025★ 4 cited

A general Bayesian model-validation framework based on null-test evidence ratios, with an example application to global 21-cm cosmology

Peter H. Sims, Steven G. Murray, Judd D. Bowman +8

Comparing composite models for multi-component observational data is a prevalent scientific challenge. When fitting composite models, there exists the potential for systematics fro…

astro-ph.IM2024

FarView: An In-Situ Manufactured Lunar Far Side Radio Array Concept for 21-cm Dark Ages Cosmology

Ronald S. Polidan, Jack O. Burns, Alex Ignatiev +7

FarView is an early-stage concept for a large, low-frequency radio observatory, manufactured in-situ on the lunar far side using metals extracted from the lunar regolith. It consis…

astro-ph.SR2016★ 29 cited

Wavelet-Based Characterization of Small-Scale Solar Emission Features at Low Radio Frequencies

Akshay Suresh, Rohit Sharma, Divya Oberoi +36

Low radio frequency solar observations using the Murchison Widefield Array have recently revealed the presence of numerous weak, short-lived and narrow-band emission features, even…

astro-ph.IM2015★ 38 cited

Power spectrum analysis of ionospheric fluctuations with the Murchison Widefield Array

Shyeh Tjing Loi, Cathryn M. Trott, Tara Murphy +45

Low-frequency, wide field-of-view (FoV) radio telescopes such as the Murchison Widefield Array (MWA) enable the ionosphere to be sampled at high spatial completeness. We present th…

astro-ph.IM2015★ 55 cited

Measuring Phased-Array Antenna Beampatterns with High Dynamic Range for the Murchison Widefield Array using 137 MHz ORBCOMM Satellites

A. R. Neben, R. F. Bradley, J. N. Hewitt +26

Detection of the fluctuations in 21 cm line emission from neutral hydrogen during the Epoch of Reionization in thousand hour integrations poses stringent requirements on calibratio…