PKS J0805-0111: A Second Owens Valley Radio Observatory Blazar Showing Highly Significant Sinusoidal Radio Variability—The Tip of the Iceberg by P. V. de la Parra, S. Kiehlmann, P. Mróz, A. C. S. Readhead, A. Synani, M. C. Begelman, R. D. Blandford, Y. Ding, F. Harrison, I. Liodakis, W. Max-Moerbeck, V. Pavlidou, R. Reeves, M. Vallisneri, M. F. Aller, M. J. Graham, T. Hovatta, C. R. Lawrence, T. J. W. Lazio, A. A. Mahabal, B. Molina, S. O’Neill, T. J. Pearson, V. Ravi, K. Tassis, J. A. Zensus

“…Owens Valley Radio Observatory observations of the supermassive black hole binary (SMBHB) candidate PKS 2131−021 revealed, for the first time, six likely characteristics of the phenomenology exhibited by SMBHBs in blazars, of which the most unexpected and critical is sinusoidal flux density variations. …”
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Implementing Continuous All-sky Monitoring with the OVRO-LWA to Identify Prompt and Precursor Counterparts of Gravitational Wave Events by Nikita Kosogorov, Gregg Hallinan, Casey Law, Jack Hickish, Jayce Dowell, Marin M. Anderson, Judd D. Bowman, Ruby Byrne, Morgan Catha, Bin Chen, Sherry Chhabra, Larry D’Addario, Ivey Davis, Katherine Elder, Dale Gary, Charlie Harnach, Greg Hellbourg, Rick Hobbs, David Hodge, Mark Hodges, Yuping Huang, Andrea Isella, Daniel C. Jacobs, Ghislain Kemby, John T. Klinefelter, Matthew Kolopanis, James Lamb, Nivedita Mahesh, Surajit Mondal, Brian O’Donnell, Kathryn Plant, Corey Posner, Vinand Prayag, Andres Rizo, Andrew Romero-Wolf, Jun Shi, Greg Taylor, Mike Virgin, Akshatha Vydula, Sandy Weinreb, David Woody, Sijie Yu, Peijin Zhang, Yifan (Amy) Zhao

“…To address these challenges, we present a novel technique embodied in the Time Machine, a system featuring a two-stage voltage buffer and subsequent processing pipeline designed for the Long Wavelength Array at the Owens Valley Radio Observatory. This array is developed to instantaneously image the entire viewable sky. …”
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Deep Synoptic Array Science: A 50 Mpc Fast Radio Burst Constrains the Mass of the Milky Way Circumgalactic Medium by Vikram Ravi, Morgan Catha, Ge Chen, Liam Connor, James M. Cordes, Jakob T. Faber, James W. Lamb, Gregg Hallinan, Charlie Harnach, Greg Hellbourg, Rick Hobbs, David Hodge, Mark Hodges, Casey Law, Paul Rasmussen, Kritti Sharma, Myles B. Sherman, Jun Shi, Dana Simard, Jean J. Somalwar, Reynier Squillace, Sander Weinreb, David P. Woody, Nitika Yadlapalli, (The Deep Synoptic Array team)

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PKS 2131−021—Discovery of Strong Coherent Sinusoidal Variations from Radio to Optical Frequencies: Compelling Evidence for a Blazar Supermassive Black Hole Binary by S. Kiehlmann, P. V. de la Parra, A. G. Sullivan, A. Synani, I. Liodakis, P. Mróz, S. K. Næss, A. C. S. Readhead, M. C. Begelman, R. D. Blandford, K. Chatziioannou, Y. Ding, M. J. Graham, F. Harrison, D. C. Homan, T. Hovatta, S. R. Kulkarni, M.L. Lister, R. Maiolino, W. Max-Moerbeck, B. Molina, C. P. O’Dea, V. Pavlidou, T. J. Pearson, M.F. Aller, C. R. Lawrence, T. J. W. Lazio, S. O’Neill, T. A. Prince, V. Ravi, R.A. Reeves, K. Tassis, M. Vallisneri, J. A. Zensus

“…Haystack and Owens Valley Radio Observatory observations recently revealed strong, intermittent, sinusoidal total flux-density variations that maintained their coherence between 1975 and 2021 in the blazar PKS 2131−021 ( z = 1.283). …”
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A Formalism for Calibrating the Instrumental Polarization of Radio Interferometric Arrays at Meter Wavelengths Using Unpolarized Sky: A Demonstration Using MWA Observations by Devojyoti Kansabanik, Angelos Vourlidas, Soham Dey, Surajit Mondal, Divya Oberoi

“…The formalism is specifically designed for wide-field, low-frequency instruments like the Murchison Widefield Array (MWA), the LOw Frequency ARray (LOFAR), New Extension in Nançay Upgrading LOFAR, Owens Valley Radio Observatory Long Wavelength Array, low-frequency telescope of the Square Kilometre Array Observatory, etc. …”
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A Hydrodynamical Simulations-based Model that Connects the FRB DM–Redshift Relation to Suppression of the Matter Power Spectrum via Feedback by Kritti Sharma, Elisabeth Krause, Vikram Ravi, Robert Reischke, Pranjal R. S., Liam Connor

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High-frequency Fast Radio Burst Search of Nearby Star-forming Galaxies M77 and M82 by Robert S. Wharton, Walid A. Majid, Myles B. Sherman, Liam Connor, Jonathon Kocz, Wenbin Lu, Aaron B. Pearlman, Thomas A. Prince, Vikram Ravi

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Synchronous and Asynchronous X-Ray Monitoring of FRB 20190520B with the Chandra X-Ray Observatory by Jessica Sydnor, Sarah Burke-Spolaor, Kshitij Aggarwal, Reshma Anna-Thomas, Casey J. Law, Harsha Blumer, Liam Connor

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Spectral Energy Distribution Variability of the Blazar OJ 287 During 2009–2021 by Wenwen Zuo, Alok C. Gupta, Minfeng Gu, Mauri J. Valtonen, Svetlana G. Jorstad, Margo F. Aller, Anne Lähteenmäki, Sebastian Kiehlmann, Pankaj Kushwaha, Hugh D. Aller, Liang Chen, Anthony C. S. Readhead, Merja Tornikoski, Qi Yuan

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Simultaneous Multiwavelength Observations of the Repeating Fast Radio Burst FRB 20190520B with Swift and FAST by Zhen Yan, Wenfei Yu, Kim L. Page, Jie Lin, Di Li, Chenhui Niu, Casey Law, Bing Zhang, Shami Chatterjee, Xian Zhang, Reshma Anna-Thomas

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Improved Constraints on the Faraday Rotation toward Eight Fast Radio Bursts Using Dense Grids of Polarized Radio Galaxies by Ayush Pandhi, B. M. Gaensler, Ziggy Pleunis, Sebastian Hutschenreuter, Casey Law, Ryan Mckinven, Shane P. O’Sullivan, Emily B. Petroff, Tessa Vernstrom

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The Radio Spectra of High-luminosity Compact Symmetric Objects: Implications for Studies of Compact Jetted Active Galactic Nuclei by P. V. de la Parra, A. C. S Readhead, T. Herbig, S. Kiehlmann, M. L. Lister, V. Pavlidou, R. A. Reeves, A. Siemiginowska, A. G. Sullivan, T. Surti, A. Synani, K. Tassis, G. B. Taylor, P. N. Wilkinson, M. F. Aller, R. D. Blandford, N. Globus, C. R. Lawrence, B. Molina, S. O’Neill, T. J. Pearson

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A Neutral Hydrogen Absorption Study of Cold Gas in the Outskirts of the Magellanic Clouds Using the GASKAP-H i Survey by Hongxing Chen, Snežana Stanimirović, Nickolas M. Pingel, James Dempsey, Frances Buckland-Willis, Susan E. Clark, Helga Dénes, John M. Dickey, Steven Gibson, Katherine Jameson, Ian Kemp, Denis Leahy, Min-Young Lee, Callum Lynn, Yik Ki Ma, N. M. McClure-Griffiths, Claire E. Murray, Hiep Nguyen, Lucero Uscanga, Jacco Th. van Loon, Enrique Vázquez-Semadeni

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The Host Galaxy of FRB 20190520B and Its Unique Ionized Gas Distribution by Xiang-Lei Chen, Chao-Wei Tsai, Daniel Stern, Christopher D. Bochenek, Shami Chatterjee, Casey Law, Di Li, Chen-hui Niu, Yuu Niino, Yi Feng, Pei Wang, Roberto J. Assef, Guo-dong Li, Sean E. Lake, Gan Luo, Mai Liao

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CHIME/Fast Radio Burst Discovery of an Unusual Circularly Polarized Long-period Radio Transient with an Accelerating Spin Period by Fengqiu Adam Dong, Kaitlyn Shin, Casey Law, Mason Ng, Ingrid Stairs, Geoffrey Bower, Alyssa Cassity, Emmanuel Fonseca, B. M. Gaensler, Jason W. T. Hessels, Victoria M. Kaspi, Bikash Kharel, Calvin Leung, Robert A. Main, Kiyoshi W. Masui, James W. McKee, Bradley W. Meyers, Obinna Modilim, Ayush Pandhi, Aaron B. Pearlman, Scott M. Ransom, Paul Scholz, Kendrick Smith

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Periodic Gamma-Ray Modulation of the Blazar PG 1553+113 Confirmed by Fermi-LAT and Multiwavelength Observations by S. Abdollahi, L. Baldini, G. Barbiellini, R. Bellazzini, B. Berenji, E. Bissaldi, R. D. Blandford, R. Bonino, P. Bruel, S. Buson, R. A. Cameron, P. A. Caraveo, F. Casaburo, E. Cavazzuti, C. C. Cheung, G. Chiaro, S. Ciprini, G. Cozzolongo, P. Cristarella Orestano, S. Cutini, F. D’Ammando, N. Di Lalla, F. Dirirsa, L. Di Venere, A. Domínguez, S. J. Fegan, E. C. Ferrara, A. Fiori, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, S. Garrappa, D. Gasparrini, S. Germani, N. Giglietto, F. Giordano, M. Giroletti, D. Green, I. A. Grenier, S. Guiriec, E. Hays, D. Horan, M. Kuss, S. Larsson, M. Laurenti, J. Li, I. Liodakis, F. Longo, F. Loparco, B. Lott, M. N. Lovellette, P. Lubrano, S. Maldera, D. Malyshev, A. Manfreda, L. Marcotulli, G. Martí-Devesa, M. N. Mazziotta, I. Mereu, P. F. Michelson, W. Mitthumsiri, T. Mizuno, M. E. Monzani, A. Morselli, I. V. Moskalenko, M. Negro, N. Omodei, M. Orienti, E. Orlando, J. F. Ormes, D. Paneque, M. Perri, M. Persic, M. Pesce-Rollins, T. A. Porter, G. Principe, S. Rainò, R. Rando, B. Rani, M. Razzano, A. Reimer, O. Reimer, P. M. Saz Parkinson, L. Scotton, D. Serini, A. Sesana, C. Sgrò, E. J. Siskind, G. Spandre, P. Spinelli, D. J. Suson, H. Tajima, M. N. Takahashi, D. Tak, J. B. Thayer, D. J. Thompson, D. F. Torres, J. Valverde, F. Verrecchia, G. Zaharijas

“…Multiwavelength new data from Swift X-Ray Telescope, Burst Alert Telescope, and UVOT, and from KAIT, Catalina Sky Survey, All-Sky Automated Survey for Supernovae, and Owens Valley Radio Observatory ground-based observatories as well as archival Rossi X-Ray Timing Explorer satellite-All Sky Monitor data, published optical data of Tuorla, and optical historical Harvard plates data are included in our work. …”
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