Zobrazeno 1 - 10
of 77
pro vyhledávání: '"de Gasperin Francesco"'
Autor:
Ye, Haoyang, Sweijen, Frits, van Weeren, Reinout, Williams, Wendy, de Jong, Jurjen, Morabito, Leah K., Rottgering, Huub, Shimwell, T. W., Best, P. N., Bondi, Marco, Brüggen, Marcus, de Gasperin, Francesco, Tasse, C.
We present the first wide area (2.5 x 2.5 deg^2) LOFAR High Band Antenna image at a resolution of 1.2'' x 2'' with a median noise of approximately 80 microJy per beam. It was made from an 8-hour International LOFAR Telescope (ILT) observation of the
Externí odkaz:
http://arxiv.org/abs/2309.16560
Autor:
Fallows Richard A., Forte Biagio, Astin Ivan, Allbrook Tom, Arnold Alex, Wood Alan, Dorrian Gareth, Mevius Maaijke, Rothkaehl Hanna, Matyjasiak Barbara, Krankowski Andrzej, Anderson James M., Asgekar Ashish, Avruch I. Max, Bentum Mark, Bisi Mario M., Butcher Harvey R., Ciardi Benedetta, Dabrowski Bartosz, Damstra Sieds, de Gasperin Francesco, Duscha Sven, Eislöffel Jochen, Franzen Thomas M.O., Garrett Michael A., Grießmeier Jean-Matthias, Gunst André W., Hoeft Matthias, Hörandel Jörg R., Iacobelli Marco, Intema Huib T., Koopmans Leon V.E., Maat Peter, Mann Gottfried, Nelles Anna, Paas Harm, Pandey Vishambhar N., Reich Wolfgang, Rowlinson Antonia, Ruiter Mark, Schwarz Dominik J., Serylak Maciej, Shulevski Aleksander, Smirnov Oleg M., Soida Marian, Steinmetz Matthias, Thoudam Satyendra, Toribio M. Carmen, van Ardenne Arnold, van Bemmel Ilse M., van der Wiel Matthijs H.D., van Haarlem Michiel P., Vermeulen René C., Vocks Christian, Wijers Ralph A.M.J., Wucknitz Olaf, Zarka Philippe, Zucca Pietro
Publikováno v:
Journal of Space Weather and Space Climate, Vol 10, p 10 (2020)
This paper presents the results from one of the first observations of ionospheric scintillation taken using the Low-Frequency Array (LOFAR). The observation was of the strong natural radio source Cassiopeia A, taken overnight on 18–19 August 2013,
Externí odkaz:
https://doaj.org/article/8314cb34774d4b90bf8e549f3b572cca
Autor:
Böhme, Lukas, Schwarz, Dominik J., de Gasperin, Francesco, Röttgering, Huub J. A., Williams, Wendy L.
Publikováno v:
A&A 674, A189 (2023)
Aims. With the recent preliminary release of the LOFAR LBA Sky Survey (LoLSS), the first wide-area, ultra-low frequency observations from LOFAR were published. Our aim is to combine this data set with other surveys at higher frequencies to study the
Externí odkaz:
http://arxiv.org/abs/2304.14829
Autor:
Schmidt, Kevin, Geyer, Felix, Fröse, Stefan, Blomenkamp, Paul-Simon, Brüggen, Marcus, de Gasperin, Francesco, Elsässer, Dominik, Rhode, Wolfgang
Publikováno v:
A&A 664, A134 (2022)
The sparse layouts of radio interferometers result in an incomplete sampling of the sky in Fourier space which leads to artifacts in the reconstructed images. Cleaning these systematic effects is essential for the scientific use of radiointerferometr
Externí odkaz:
http://arxiv.org/abs/2203.11757
Autor:
Kukreti, Pranav, Morganti, Raffaella, Shimwell, Timothy W., Morabito, Leah K., Beswick, Robert J., Brienza, Marisa, Hardcastle, Martin J., Sweijen, Frits, Jackson, Neal, Miley, George K., Moldon, Javier, Oosterloo, Tom, de Gasperin, Francesco
Publikováno v:
A&A 658, A6 (2022)
Active galactic nuclei (AGNs) show episodic activity, evident in galaxies that exhibit restarted radio jets. These restarted jets can interact with their environment, leaving signatures on the radio spectral energy distribution. Tracing these signatu
Externí odkaz:
http://arxiv.org/abs/2108.07289
Autor:
Hutschenreuter, Sebastian, Anderson, Craig S., Betti, Sarah, Bower, Geoffrey C., Brown, Jo-Anne, Brüggen, Marcus, Carretti, Ettore, Clarke, Tracy, Clegg, Andrew, Costa, Allison, Croft, Steve, Van Eck, Cameron, Gaensler, B. M., de Gasperin, Francesco, Haverkorn, Marijke, Heald, George, Hull, Charles L. H., Inoue, Makoto, Johnston-Hollitt, Melanie, Kaczmarek, Jane, Law, Casey, Ma, Yik Ki, MacMahon, David, Mao, Sui Ann, Riseley, Christopher, Roy, Subhashis, Shanahan, Russell, Shimwell, Timothy, Stil, Jeroen, Sobey, Charlotte, O'Sullivan, Shane, Tasse, Cyril, Vacca, Valentina, Vernstrom, Tessa, Williams, Peter K. G., Wright, Melvyn, Enßlin, Torsten A.
Publikováno v:
A&A 657, A43 (2022)
This work gives an update to existing reconstructions of the Galactic Faraday rotation sky by processing almost all Faraday rotation data sets available at the end of the year 2020. Observations of extra-Galactic sources in recent years have, among o
Externí odkaz:
http://arxiv.org/abs/2102.01709
First constraints on the AGN X-ray luminosity function at $z \sim 6$ from an eROSITA-detected quasar
Autor:
Wolf, Julien, Nandra, Kirpal, Salvato, Mara, Liu, Teng, Buchner, Johannes, Brusa, Marcella, Hoang, Duy N., Moss, Vanessa, Arcodia, Riccardo, Brüggen, Marcus, Comparat, Johan, de Gasperin, Francesco, Georgakakis, Antonis, Hotan, Aidan, Lamer, Georg, Merloni, Andrea, Rau, Arne, Rottgering, Huub J. A., Shimwell, Timothy W., Urrutia, Tanya, Whiting, Matthew, Williams, Wendy L.
Publikováno v:
A&A 647, A5 (2021)
We searched for high-z quasars within the X-ray source population detected in the contiguous $\sim 140^2$ eFEDS field observed by eROSITA during the performance verification phase. We collected the available spectroscopic information in the field, in
Externí odkaz:
http://arxiv.org/abs/2101.05585
Autor:
Di Gennaro, Gabriella, van Weeren, Reinout J., Brunetti, Gianfranco, Cassano, Rossella, Brüggen, Marcus, Hoeft, Matthias, Shimwell, Timothy W., Röttgering, Huub J. A., Bonafede, Annalisa, Botteon, Andrea, Cuciti, Virginia, Dallacasa, Daniele, de Gasperin, Francesco, Domínguez-Fernández, Paola, Ensslin, Torsten A., Gastaldello, Fabio, Mandal, Soumyajit, Rossetti, Mariachiara, Simionescu, Aurora
In the present-day Universe, magnetic fields pervade galaxy clusters, with strengths of a few microGauss obtained from Faraday Rotation. Evidence for cluster magnetic fields is also provided by Megaparsec-scale radio emission, namely radio halos and
Externí odkaz:
http://arxiv.org/abs/2011.01628
Autor:
Finner, Kyle, HyeongHan, Kim, Jee, M. James, Wittman, David, Forman, William R., van Weeren, Reinout J., Golovich, Nathan R., Dawson, William A., Jones, Alexander, de Gasperin, Francesco, Jones, Christine
The investigation of merging galaxy clusters that exhibit radio relics is strengthening our understanding of the formation and evolution of galaxy clusters, the nature of dark matter, the intracluster medium, and astrophysical particle acceleration.
Externí odkaz:
http://arxiv.org/abs/2010.02226
Autor:
Fallows, Richard A., Forte, Biagio, Astin, Ivan, Allbrook, Tom, Arnold, Alex, Wood, Alan, Dorrian, Gareth, Mevius, Maaijke, Rothkaehl, Hanna, Matyjasiak, Barbara, Krankowski, Andrzej, Anderson, James M., Asgekar, Ashish, Avruch, I. Max, Bentum, Mark, Bisi, Mario M., Butcher, Harvey R., Ciardi, Benedetta, Dabrowski, Bartosz, Damstra, Sieds, de Gasperin, Francesco, Duscha, Sven, Eislöffel, Jochen, Franzen, Thomas M. O., Garrett, Michael A., Grie\b{eta}meier, Jean-Matthias, Gunst, André W., Hoeft, Matthias, Hörandel, Jörg R., Iacobelli, Marco, Intema, Huib T., Koopmans, Leon V. E., Maat, Peter, Mann, Gottfried, Nelles, Anna, Paas, Harm, Pandey, Vishambhar N., Reich, Wolfgang, Rowlinson, Antonia, Ruiter, Mark, Schwarz, Dominik J., Serylak, Maciej, Shulevski, Aleksander, Smirnov, Oleg M., Soida, Marian, Steinmetz, Matthias, Thoudam, Satyendra, Toribio, M. Carmen, van Ardenne, Arnold, van Bemmel, Ilse M., van der Wiel, Matthijs H. D., van Haarlem, Michiel P., Vermeulen, René C., Vocks, Christian, Wijers, Ralph A. M. J., Wucknitz, Olaf, Zarka, Philippe, Zucca, Pietro
This paper presents the results from one of the first observations of ionospheric scintillation taken using the Low-Frequency Array (LOFAR). The observation was of the strong natural radio source Cas A, taken overnight on 18-19 August 2013, and exhib
Externí odkaz:
http://arxiv.org/abs/2003.04013