Zobrazeno 1 - 10
of 618
pro vyhledávání: '"Jelić, V."'
Autor:
Piras, S., Horellou, C., Conway, J. E., Thomasson, M., del Palacio, S., Shimwell, T. W., O'Sullivan, S. P., Carretti, E., Šnidaric, I., Jelic, V., Adebahr, B., Berger, A., Best, P. N., Brüggen, M., Ruiz, N. Herrera, Paladino, R., Prandoni, I., Sabater, J., Vacca, V.
The aim of this study is to probe the sub-mJy polarized source population with LOFAR. We present the method used to stack LOFAR polarization datasets, the resulting catalog of polarized sources, and the derived polarized source counts. The ELAIS-N1 f
Externí odkaz:
http://arxiv.org/abs/2406.08346
Publikováno v:
A&A 687, A102 (2024)
Faraday tomography observations with the Low Frequency Array (LOFAR) have unveiled a remarkable network of structures in polarized synchrotron emission at high Galactic latitudes. The observed correlation between LOFAR structures, dust polarization,
Externí odkaz:
http://arxiv.org/abs/2404.19002
Autor:
Dickey, John M., West, Jennifer, Thomson, Alec J. M., Landecker, T. L., Bracco, A., Carretti, E., Han, J. L., Hill, A. S., Ma, Y. K., Mao, S. A., Ordog, A., Brown, Jo-Anne C., Douglas, K. A., Erceg, A., Jelic, V., Kothes, R., Wolleben, M.
Magnetic fields in the ionized medium of the disk and halo of the Milky Way impose Faraday rotation on linearly polarized radio emission. We compare two surveys mapping the Galactic Faraday rotation, one showing the rotation measures of extragalactic
Externí odkaz:
http://arxiv.org/abs/2209.10819
Autor:
Bracco, A., Ntormousi, E., Jelić, V., Padovani, M., Šiljeg, B., Erceg, A., Turić, L., Ceraj, L., Šnidarić, I.
Publikováno v:
A&A 663, A37 (2022)
Faraday tomography of radio polarimetric data below 200 MHz from LOFAR are providing us with a new perspective on the diffuse and magnetized interstellar medium (ISM). Of particular interest is the discovery of Faraday-rotated synchrotron polarizatio
Externí odkaz:
http://arxiv.org/abs/2204.02774
Autor:
Shimwell, T. W., Hardcastle, M. J., Tasse, C., Best, P. N., Röttgering, H. J. A., Williams, W. L., Botteon, A., Drabent, A., Mechev, A., Shulevski, A., van Weeren, R. J., Bester, L., Brüggen, M., Brunetti, G., Callingham, J. R., Chyży, K. T., Conway, J. E., Dijkema, T. J., Duncan, K., de Gasperin, F., Hale, C. L., Haverkorn, M., Hugo, B., Jackson, N., Mevius, M., Miley, G. K., Morabito, L. K., Morganti, R., Offringa, A., Oonk, J. B. R., Rafferty, D., Sabater, J., Smith, D. J. B., Schwarz, D. J., Smirnov, O., O'Sullivan, S. P., Vedantham, H., White, G. J., Albert, J. G., Alegre, L., Asabere, B., Bacon, D. J., Bonafede, A., Bonnassieux, E., Brienza, M., Bilicki, M., Bonato, M., Rivera, G. Calistro, Cassano, R., Cochrane, R., Croston, J. H., Cuciti, V., Dallacasa, D., Danezi, A., Dettmar, R. J., Di Gennaro, G., Edler, H. W., Enßlin, T. A., Emig, K. L., Franzen, T. M. O., García-Vergara, C., Grange, Y. G., Gürkan, G., Hajduk, M., Heald, G., Heesen, V., Hoang, D. N., Hoeft, M., Horellou, C., Iacobelli, M., Jamrozy, M., Jelić, V., Kondapally, R., Kukreti, P., Kunert-Bajraszewska, M., Magliocchetti, M., Mahatma, V., Małek, K., Mandal, S., Massaro, F., Meyer-Zhao, Z., Mingo, B., Mostert, R. I. J., Nair, D. G., Nakoneczny, S. J., Nikiel-Wroczyński, B., Orrú, E., Pajdosz-Śmierciak, U., Pasini, T., Prandoni, I., van Piggelen, H. E., Rajpurohit, K., Retana-Montenegro, E., Riseley, C. J., Rowlinson, A., Saxena, A., Schrijvers, C., Sweijen, F., Siewert, T. M., Timmerman, R., Vaccari, M., Vink, J., West, J. L., Wołowska, A., Zhang, X., Zheng, J.
In this data release from the LOFAR Two-metre Sky Survey (LoTSS) we present 120-168MHz images covering 27% of the northern sky. Our coverage is split into two regions centred at approximately 12h45m +44$^\circ$30' and 1h00m +28$^\circ$00' and spannin
Externí odkaz:
http://arxiv.org/abs/2202.11733
Autor:
Ruiz, N. Herrera, O'Sullivan, S. P., Vacca, V., Jelić, V., Nikiel-Wroczyński, B., Bourke, S., Sabater, J., Dettmar, R. -J., Heald, G., Horellou, C., Piras, S., Sobey, C., Shimwell, T. W., Tasse, C., Hardcastle, M. J., Kondapally, R., Chyży, K. T., Iacobelli, M., Best, P. N., Brüggen, M., Carretti, E., Prandoni, I.
Publikováno v:
A&A 648, A12 (2021)
We present deep polarimetric observations of the European Large Area ISO Survey-North 1 (ELAIS-N1) field using the Low Frequency Array (LOFAR) at 114.9-177.4 MHz. The ELAIS-N1 field is part of the LOFAR Two-metre Sky Survey deep fields data release I
Externí odkaz:
http://arxiv.org/abs/2011.08292
Autor:
Sabater, J., Best, P. N., Tasse, C., Hardcastle, M. J., Shimwell, T. W., Nisbet, D., Jelic, V., Callingham, J. R., Rottgering, H. J. A., Bonato, M., Bondi, M., Ciardi, B., Cochrane, R. K., Jarvis, M. J., Kondapally, R., Koopmans, L. V. E., O'Sullivan, S. P., Prandoni, I., Schwarz, D. J., Smith, D. J. B., Wang, L., Williams, W. L., Zaroubi, S.
Publikováno v:
A&A 648, A2 (2021)
The LOFAR Two-metre Sky Survey (LoTSS) will cover the full northern sky and, additionally, aims to observe the LoTSS deep fields to a noise level of ~10 microJy/bm over several tens of square degrees in areas that have the most extensive ancillary da
Externí odkaz:
http://arxiv.org/abs/2011.08211
Autor:
Hothi, Ian, Chapman, Emma, Pritchard, Jonathan R., Mertens, F. G., Koopmans, L. V. E, Ciardi, B., Gehlot, B. K., Ghara, R., Ghosh, A., Giri, S. K., Iliev, I. T., Jelić, V., Zaroubi, S.
We compare various foreground removal techniques that are being utilised to remove bright foregrounds in various experiments aiming to detect the redshifted 21cm signal of neutral hydrogen from the Epoch of Reionization. In this work, we test the per
Externí odkaz:
http://arxiv.org/abs/2011.01284
Autor:
Ghara, R., Giri, S. K., Mellema, G., Ciardi, B., Zaroubi, S., Iliev, I. T., Koopmans, L. V. E., Chapman, E., Gazagnes, S., Gehlot, B. K., Ghosh, A., Jelic, V., Mertens, F. G., Mondal, R., Schaye, J., Silva, M. B., Asad, K. M. B., Kooistra, R., Mevius, M., Offringa, A. R., Pandey, V. N., Yatawatta, S.
We derive constraints on the thermal and ionization states of the intergalactic medium (IGM) at redshift $\approx$ 9.1 using new upper limits on the 21-cm power spectrum measured by the LOFAR radio-telescope and a prior on the ionized fraction at tha
Externí odkaz:
http://arxiv.org/abs/2002.07195
Autor:
Mertens, F. G., Mevius, M., Koopmans, L. V. E, Offringa, A. R., Mellema, G., Zaroubi, S., Brentjens, M. A., Gan, H., Gehlot, B. K., Pandey, V. N., Sardarabadi, A. M., Vedantham, H. K., Yatawatta, S., Asad, K. M. B., Ciardi, B., Chapman, E., Gazagnes, S., Ghara, R., Ghosh, A., Giri, S. K., Iliev, I. T., Jelić, V., Kooistra, R., Mondal, R., Schaye, J., Silva, M. B.
A new upper limit on the 21-cm signal power spectrum at a redshift of $z \approx 9.1$ is presented, based on 141 hours of data obtained with the Low-Frequency Array (LOFAR). The analysis includes significant improvements in spectrally-smooth gain-cal
Externí odkaz:
http://arxiv.org/abs/2002.07196