A Commensal Radio-Only Cosmic Ray Detector at the Owens Valley Radio Observatory Long Wavelength Array
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2026
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| author | Plant, Kathryn A. Romero-Wolf, Andrew Hallinan, Gregg Anderson, Marin M. Bowman, Judd D. Byrne, Ruby Chen, Bin Chen, Xingyao Catha, Morgan Chhabra, Sherry D'Addario, Larry Davis, Ivey Dowell, Jayce Elder, Katherine Gary, Dale Harnach, Charlie Hellbourg, Greg Hickish, Jack Hobbs, Rick Hodge, David Hodges, Mark Huang, Yuping Isella, Andrea Jacobs, Daniel C. Kemby, Ghislain Klinefelter, John T. Kolopanis, Matthew Kosogorov, Nikita Lamb, James Law, Casey Mahesh, Nivedita Mondal, Surajit O'Donnell, Brian Posner, Corey Powell, Travis Prayag, Vinand Rizo, Andres Shi, Jun Taylor, Greg Trim, Jordan Virgin, Mike Vydula, Akshatha Weinreb, Sandy White, Scott Woody, David Yu, Sijie Zentmeyer, Thomas Zhang, Peijin Lazio, T. Joseph W. |
| author_facet | Plant, Kathryn A. Romero-Wolf, Andrew Hallinan, Gregg Anderson, Marin M. Bowman, Judd D. Byrne, Ruby Chen, Bin Chen, Xingyao Catha, Morgan Chhabra, Sherry D'Addario, Larry Davis, Ivey Dowell, Jayce Elder, Katherine Gary, Dale Harnach, Charlie Hellbourg, Greg Hickish, Jack Hobbs, Rick Hodge, David Hodges, Mark Huang, Yuping Isella, Andrea Jacobs, Daniel C. Kemby, Ghislain Klinefelter, John T. Kolopanis, Matthew Kosogorov, Nikita Lamb, James Law, Casey Mahesh, Nivedita Mondal, Surajit O'Donnell, Brian Posner, Corey Powell, Travis Prayag, Vinand Rizo, Andres Shi, Jun Taylor, Greg Trim, Jordan Virgin, Mike Vydula, Akshatha Weinreb, Sandy White, Scott Woody, David Yu, Sijie Zentmeyer, Thomas Zhang, Peijin Lazio, T. Joseph W. |
| contents | 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 anthropogenic radio frequency interference has historically prevented radio-based cosmic ray studies from being carried out independently from other types of detectors. We describe a cosmic ray detection system for the Owens Valley Radio Observatory Long Wavelength Array that searches for radio emission from cosmic ray air showers without relying on an external trigger, and runs alongside the other observing modes of the array. The OVRO-LWA, located in Eastern California, recently completed an expansion to 352 dual-polarization antennas and new signal processing infrastructure. In order to detect cosmic rays in the presence of radio frequency interference (RFI), initial event classification and RFI rejection is performed on Field Programmable Gate Array boards, which each process a sampled voltage timeseries from both polarizations of a subarray of 32 antennas. Each board uses dedicated RFI veto antennas outside the air shower radio footprint to reject RFI events. We present the trigger design, RFI flagging strategy, and candidate cosmic rays. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_13205 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A Commensal Radio-Only Cosmic Ray Detector at the Owens Valley Radio Observatory Long Wavelength Array Plant, Kathryn A. Romero-Wolf, Andrew Hallinan, Gregg Anderson, Marin M. Bowman, Judd D. Byrne, Ruby Chen, Bin Chen, Xingyao Catha, Morgan Chhabra, Sherry D'Addario, Larry Davis, Ivey Dowell, Jayce Elder, Katherine Gary, Dale Harnach, Charlie Hellbourg, Greg Hickish, Jack Hobbs, Rick Hodge, David Hodges, Mark Huang, Yuping Isella, Andrea Jacobs, Daniel C. Kemby, Ghislain Klinefelter, John T. Kolopanis, Matthew Kosogorov, Nikita Lamb, James Law, Casey Mahesh, Nivedita Mondal, Surajit O'Donnell, Brian Posner, Corey Powell, Travis Prayag, Vinand Rizo, Andres Shi, Jun Taylor, Greg Trim, Jordan Virgin, Mike Vydula, Akshatha Weinreb, Sandy White, Scott Woody, David Yu, Sijie Zentmeyer, Thomas Zhang, Peijin Lazio, T. Joseph W. Instrumentation and Methods for Astrophysics 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 anthropogenic radio frequency interference has historically prevented radio-based cosmic ray studies from being carried out independently from other types of detectors. We describe a cosmic ray detection system for the Owens Valley Radio Observatory Long Wavelength Array that searches for radio emission from cosmic ray air showers without relying on an external trigger, and runs alongside the other observing modes of the array. The OVRO-LWA, located in Eastern California, recently completed an expansion to 352 dual-polarization antennas and new signal processing infrastructure. In order to detect cosmic rays in the presence of radio frequency interference (RFI), initial event classification and RFI rejection is performed on Field Programmable Gate Array boards, which each process a sampled voltage timeseries from both polarizations of a subarray of 32 antennas. Each board uses dedicated RFI veto antennas outside the air shower radio footprint to reject RFI events. We present the trigger design, RFI flagging strategy, and candidate cosmic rays. |
| title | A Commensal Radio-Only Cosmic Ray Detector at the Owens Valley Radio Observatory Long Wavelength Array |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2603.13205 |