The LOFAR Two-meter Sky Survey: Deep Fields Data Release 1: I. Direction-dependent calibration and imaging

Tasse C, Shimwell T, Hardcastle MJ, O'Sullivan SP, van Weeren R, Best PN, Bester L, Hugo B, Smirnov O, Sabater J, Calistro-Rivera G, et al. (2021)
Astronomy and Astrophysics 648: A1.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
Es wurden keine Dateien hochgeladen. Nur Publikationsnachweis!
Autor*in
Tasse, C.; Shimwell, T.; Hardcastle, M. J.; O'Sullivan, S. P.; van Weeren, R.; Best, P. N.; Bester, L.; Hugo, B.; Smirnov, O.; Sabater, J.; Calistro-Rivera, G.; de Gasperin, F.
Alle
Abstract / Bemerkung
The Low Frequency Array (LOFAR) is an ideal instrument to conduct deep extragalactic surveys. It has a large field of view and is sensitive to large-scale and compact emission. It is, however, very challenging to synthesize thermal noise limited maps at full resolution, mainly because of the complexity of the low-frequency sky and the direction dependent effects (phased array beams and ionosphere). In this first paper of a series, we present a new calibration and imaging pipeline that aims at producing high fidelity, high dynamic range images with LOFAR High Band Antenna data, while being computationally efficient and robust against the absorption of unmodeled radio emission. We apply this calibration and imaging strategy to synthesize deep images of the Bootes and Lockman Hole fields at similar to 150 MHz, totaling similar to 80 and similar to 100 h of integration, respectively, and reaching unprecedented noise levels at these low frequencies of less than or similar to 30 and less than or similar to 23 mu Jy beam(-1) in the inner similar to 3 deg(2). This approach is also being used to reduce theLOTSS-wide data for the second data release.
Stichworte
techniques: interferometric; techniques: image processing; surveys; galaxies: active; galaxies: starburst; radio continuum: galaxies
Erscheinungsjahr
2021
Zeitschriftentitel
Astronomy and Astrophysics
Band
648
Art.-Nr.
A1
ISSN
0004-6361
eISSN
1432-0746
Page URI
https://pub.uni-bielefeld.de/record/2955122

Zitieren

Tasse C, Shimwell T, Hardcastle MJ, et al. The LOFAR Two-meter Sky Survey: Deep Fields Data Release 1: I. Direction-dependent calibration and imaging. Astronomy and Astrophysics. 2021;648: A1.
Tasse, C., Shimwell, T., Hardcastle, M. J., O'Sullivan, S. P., van Weeren, R., Best, P. N., Bester, L., et al. (2021). The LOFAR Two-meter Sky Survey: Deep Fields Data Release 1: I. Direction-dependent calibration and imaging. Astronomy and Astrophysics, 648, A1. https://doi.org/10.1051/0004-6361/202038804
Tasse, C., Shimwell, T., Hardcastle, M. J., O'Sullivan, S. P., van Weeren, R., Best, P. N., Bester, L., Hugo, B., Smirnov, O., Sabater, J., et al. (2021). The LOFAR Two-meter Sky Survey: Deep Fields Data Release 1: I. Direction-dependent calibration and imaging. Astronomy and Astrophysics 648:A1.
Tasse, C., et al., 2021. The LOFAR Two-meter Sky Survey: Deep Fields Data Release 1: I. Direction-dependent calibration and imaging. Astronomy and Astrophysics, 648: A1.
C. Tasse, et al., “The LOFAR Two-meter Sky Survey: Deep Fields Data Release 1: I. Direction-dependent calibration and imaging”, Astronomy and Astrophysics, vol. 648, 2021, : A1.
Tasse, C., Shimwell, T., Hardcastle, M.J., O'Sullivan, S.P., van Weeren, R., Best, P.N., Bester, L., Hugo, B., Smirnov, O., Sabater, J., Calistro-Rivera, G., de Gasperin, F., Morabito, L.K., Roettgering, H., Williams, W.L., Bonato, M., Bondi, M., Botteon, A., Brueggen, M., Brunetti, G., Chyzy, K.T., Garrett, M.A., Guerkan, G., Jarvis, M.J., Kondapally, R., Mandal, S., Prandoni, I., Repetti, A., Retana-Montenegro, E., Schwarz, D., Shulevski, A., Wiaux, Y.: The LOFAR Two-meter Sky Survey: Deep Fields Data Release 1: I. Direction-dependent calibration and imaging. Astronomy and Astrophysics. 648, : A1 (2021).
Tasse, C., Shimwell, T., Hardcastle, M. J., O'Sullivan, S. P., van Weeren, R., Best, P. N., Bester, L., Hugo, B., Smirnov, O., Sabater, J., Calistro-Rivera, G., de Gasperin, F., Morabito, L. K., Roettgering, H., Williams, W. L., Bonato, M., Bondi, M., Botteon, A., Brueggen, M., Brunetti, G., Chyzy, K. T., Garrett, M. A., Guerkan, G., Jarvis, M. J., Kondapally, R., Mandal, S., Prandoni, I, Repetti, A., Retana-Montenegro, E., Schwarz, Dominik, Shulevski, A., and Wiaux, Y. “The LOFAR Two-meter Sky Survey: Deep Fields Data Release 1: I. Direction-dependent calibration and imaging”. Astronomy and Astrophysics 648 (2021): A1.

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Suchen in

Google Scholar