fast-resolve: Fast Bayesian Radio Interferometric Imaging

Autor: Roth, Jakob, Frank, Philipp, Bester, Hertzog L., Smirnov, Oleg M., Westermann, Rüdiger, Enßlin, Torsten A.

Publikováno v: A&A 690, A387 (2024)

Context: Interferometric imaging is algorithmically and computationally challenging as there is no unique inversion from the measurement data back to the sky maps, and the datasets can be very large. Many imaging methods already exist, but most of th

Externí odkaz: http://arxiv.org/abs/2406.09144

The VLBA CANDELS GOODS-North Survey. I -- Survey Design, Processing, Data Products, and Source Counts

Autor: Deane, Roger P., Radcliffe, Jack F., Njeri, Ann, Akoto-Danso, Alexander, Bernardi, Gianni, Smirnov, Oleg M., Beswick, Rob, Garrett, Michael A., Jarvis, Matt J., Whittam, Imogen H., Bourke, Stephen, Paragi, Zsolt

The past decade has seen significant advances in wide-field cm-wave very long baseline interferometry (VLBI), which is timely given the wide-area, synoptic survey-driven strategy of major facilities across the electromagnetic spectrum. While wide-fie

Externí odkaz: http://arxiv.org/abs/2401.12298

A radio bridge connecting the minihalo and phoenix in the Abell 85 cluster

Autor: Raja, Ramij, Rahaman, Majidul, Datta, Abhirup, Smirnov, Oleg M.

Galaxy clusters are located at the nodes of cosmic filaments and therefore host a lot of hydrodynamical activity. However, cool core clusters are considered to be relatively relaxed systems without much merging activity. The Abell 85 cluster is a uni

Externí odkaz: http://arxiv.org/abs/2308.09005

Search for the Epoch of Reionisation with HERA: Upper Limits on the Closure Phase Delay Power Spectrum

Autor: Keller, Pascal M., Nikolic, Bojan, Thyagarajan, Nithyanandan, Carilli, Chris L., Bernardi, Gianni, Charles, Ntsikelelo, Bester, Landman, Smirnov, Oleg M., Kern, Nicholas S., Dillon, Joshua S., Hazelton, Bryna J., Morales, Miguel F., Jacobs, Daniel C., Parsons, Aaron R., Abdurashidova, Zara, Adams, Tyrone, Aguirre, James E., Alexander, Paul, Ali, Zaki S., Baartman, Rushelle, Balfour, Yanga, Beardsley, Adam P., Billings, Tashalee S., Bowman, Judd D., Bradley, Richard F., Bull, Philip, Burba, Jacob, Carey, Steven, Cheng, Carina, DeBoer, David R., Acedo, Eloy de Lera, Dexter, Matt, Eksteen, Nico, Ely, John, Ewall-Wice, Aaron, Fagnoni, Nicolas, Fritz, Randall, Furlanetto, Steven R., Gale-Sides, Kingsley, Glendenning, Brian, Gorthi, Deepthi, Greig, Bradley, Grobbelaar, Jasper, Halday, Ziyaad, Hewitt, Jacqueline N., Hickish, Jack, Julius, Austin, Kariseb, MacCalvin, Kerrigan, Joshua, Kittiwisit, Piyanat, Kohn, Saul A., Kolopanis, Matthew, Lanman, Adam, La Plante, Paul, Liu, Adrian, Loots, Anita, Ma, Yin-Zhe, MacMahon, David Harold Edward, Malan, Lourence, Malgas, Cresshim, Malgas, Keith, Marero, Bradley, Martinot, Zachary E., Mesinger, Andrei, Molewa, Mathakane, Mosiane, Tshegofalang, Murray, Steven G., Neben, Abraham R., Nuwegeld, Hans, Pascua, Robert, Patra, Nipanjana, Pieterse, Samantha, Pober, Jonathan C., Razavi-Ghods, Nima, Robnett, James, Rosie, Kathryn, Santos, Mario G., Sims, Peter, Smith, Craig, Swarts, Hilton, Van Wyngaarden, Pieter, Williams, Peter K. G., Zheng, Haoxuan

Radio interferometers aiming to measure the power spectrum of the redshifted 21 cm line during the Epoch of Reionisation (EoR) need to achieve an unprecedented dynamic range to separate the weak signal from overwhelming foreground emissions. Calibrat

Externí odkaz: http://arxiv.org/abs/2302.07969

Tricolour: an optimized SumThreshold flagger for MeerKAT

Autor: Hugo, Benjamin V., Perkins, Simon, Merry, Bruce, Mauch, Tom, Smirnov, Oleg M.

We present Tricolour, a package for Radio Frequency Interference mitigation of wideband finely channelized MeerKAT correlation data. The MeerKAT passband is heavily affected by interference from satellite, mobile, aircraft and terrestrial transponder

Externí odkaz: http://arxiv.org/abs/2206.09179