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Cited by 585

The DOI matches its Crossref record; 35 of the 35 references it cites were found in a registry or an index.

The LOFAR Two-metre Sky Survey: II. First data release

Open access
Shimwell, T. W., Tasse, C., Hardcastle, M. J., Mechev, A. P., Williams, W. L., Best, P. N., Röttgering, H. J. A., Callingham, J. R., Dijkema, T. J., de Gasperin, F., Hoang, D. N., Hugo, B., Mirmont, M., Oonk, J. B. R., Prandoni, I., Rafferty, D., Sabater, J., Smirnov, O., van Weeren, R. J., White, G. J., Atemkeng, M., Bester, L., Bonnassieux, E., Brüggen, M., Brunetti, G., Chyży, K. T., Cochrane, R., Conway, J. E., Croston, J. H., Danezi, A., Duncan, K., Haverkorn, M., Heald, G. H., Iacobelli, M., Intema, H. T., Jackson, N., Jamrozy, M., Jarvis, M. J., Lakhoo, R., Mevius, M., Miley, G. K., Morabito, L., Morganti, R., Nisbet, D., Orrú, E., Perkins, S., Pizzo, R. F., Schrijvers, C., Smith, D. J. B., Vermeulen, R., Wise, M. W., Alegre, L., Bacon, D. J., van Bemmel, I. M., Beswick, R. J., Bonafede, A., Botteon, A., Bourke, S., Brienza, M., Calistro Rivera, G., Cassano, R., Clarke, A. O., Conselice, C. J., Dettmar, R. J., Drabent, A., Dumba, C., Emig, K. L., Enßlin, T. A., Ferrari, C., Garrett, M. A., Génova-Santos, R. T., Goyal, A., Gürkan, G., Hale, C., Harwood, J. J., Heesen, V., Hoeft, M., Horellou, C., Jackson, C., Kokotanekov, G., Kondapally, R., Kunert-Bajraszewska, M., Mahatma, V., Mahony, E. K., Mandal, S., McKean, J. P., Merloni, A., Mingo, B., Miskolczi, A., Mooney, S., Nikiel-Wroczyński, B., O’Sullivan, S. P., Quinn, J., Reich, W., Roskowiński, C., Rowlinson, A., Savini, F., Saxena, A., Schwarz, D. J., Shulevski, A., Sridhar, S. S., Stacey, H. R., Urquhart, S., van der Wiel, M. H. D., Varenius, E., Webster, B., Wilber, A.·2019·Astronomy & Astrophysics

Abstract

The LOFAR Two-metre Sky Survey (LoTSS) is an ongoing sensitive, high-resolution 120–168 MHz survey of the entire northern sky for which observations are now 20% complete. We present our first full-quality public data release. For this data release 424 square degrees, or 2% of the eventual coverage, in the region of the HETDEX Spring Field (right ascension 10h45m00s to 15h30m00s and declination 45°00′00″ to 57°00′00″) were mapped using a fully automated direction-dependent calibration and imaging pipeline that we developed. A total of 325 694 sources are detected with a signal of at least five times the noise, and the source density is a factor of ∼10 higher than the most sensitive existing very wide-area radio-continuum surveys. The median sensitivity is S144 MHz = 71 μ Jy beam−1 and the point-source completeness is 90% at an integrated flux density of 0.45 mJy. The resolution of the images is 6″ and the positional accuracy is within 0.2″. This data release consists of a catalogue containing location, flux, and shape estimates together with 58 mosaic images that cover the catalogued area. In this paper we provide an overview of the data release with a focus on the processing of the LOFAR data and the characteristics of the resulting images. In two accompanying papers we provide the radio source associations and deblending and, where possible, the optical identifications of the radio sources together with the photometric redshifts and properties of the host galaxies. These data release papers are published together with a further ∼20 articles that highlight the scientific potential of LoTSS.

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Authors
Shimwell, T. W., Tasse, C., Hardcastle, M. J., Mechev, A. P., Williams, W. L., Best, P. N., Röttgering, H. J. A., Callingham, J. R., Dijkema, T. J., de Gasperin, F., Hoang, D. N., Hugo, B., Mirmont, M., Oonk, J. B. R., Prandoni, I., Rafferty, D., Sabater, J., Smirnov, O., van Weeren, R. J., White, G. J., Atemkeng, M., Bester, L., Bonnassieux, E., Brüggen, M., Brunetti, G., Chyży, K. T., Cochrane, R., Conway, J. E., Croston, J. H., Danezi, A., Duncan, K., Haverkorn, M., Heald, G. H., Iacobelli, M., Intema, H. T., Jackson, N., Jamrozy, M., Jarvis, M. J., Lakhoo, R., Mevius, M., Miley, G. K., Morabito, L., Morganti, R., Nisbet, D., Orrú, E., Perkins, S., Pizzo, R. F., Schrijvers, C., Smith, D. J. B., Vermeulen, R., Wise, M. W., Alegre, L., Bacon, D. J., van Bemmel, I. M., Beswick, R. J., Bonafede, A., Botteon, A., Bourke, S., Brienza, M., Calistro Rivera, G., Cassano, R., Clarke, A. O., Conselice, C. J., Dettmar, R. J., Drabent, A., Dumba, C., Emig, K. L., Enßlin, T. A., Ferrari, C., Garrett, M. A., Génova-Santos, R. T., Goyal, A., Gürkan, G., Hale, C., Harwood, J. J., Heesen, V., Hoeft, M., Horellou, C., Jackson, C., Kokotanekov, G., Kondapally, R., Kunert-Bajraszewska, M., Mahatma, V., Mahony, E. K., Mandal, S., McKean, J. P., Merloni, A., Mingo, B., Miskolczi, A., Mooney, S., Nikiel-Wroczyński, B., O’Sullivan, S. P., Quinn, J., Reich, W., Roskowiński, C., Rowlinson, A., Savini, F., Saxena, A., Schwarz, D. J., Shulevski, A., Sridhar, S. S., Stacey, H. R., Urquhart, S., van der Wiel, M. H. D., Varenius, E., Webster, B., & Wilber, A.
Venue
Astronomy & Astrophysics
Publisher
EDP Sciences
Published
2019-02
Volume
622
Pages
A1
ISSN
  • 0004-6361 (ISSN-L)
  • 1432-0746
OpenAlex
W3101452500
Cited by
585
References
35
FWCI
35.38
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: The LOFAR Two-metre Sky Survey: II. First data release. https://app.cochat.ai/papers/10.1051/0004-6361/201833559
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Shimwell, T. W., Tasse, C., Hardcastle, M. J., Mechev, A. P., Williams, W. L., Best, P. N., Röttgering, H. J. A., Callingham, J. R., Dijkema, T. J., de Gasperin, F., Hoang, D. N., Hugo, B., Mirmont, M., Oonk, J. B. R., Prandoni, I., Rafferty, D., Sabater, J., Smirnov, O., van Weeren, R. J., . . . Wilber, A. (2019). The LOFAR Two-metre Sky Survey: II. First data release. Astronomy & Astrophysics. https://doi.org/10.1051/0004-6361/201833559

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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