no code implementations • 12 Feb 2021 • G. Di Gennaro, R. J. van Weeren, L. Rudnick, M. Hoeft, M. Brüggen, D. Ryu, H. J. A. Röttgering, W. Forman, A. Stroe, T. W. Shimwell, R. P. Kraft, C. Jones, D. N. Hoang
For the first time in a radio relic, we observe a decreasing polarization fraction in the downstream region.
Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics
no code implementations • 28 Dec 2020 • K. Rajpurohit, G. Brunetti, A. Bonafede, R. J. van Weeren, A. Botteon, F. Vazza, M. Hoeft, C. J. Riseley, E. Bonnassieux, M. Brienza, W. R. Forman, H. J. A. Röttgering, A. S. Rajpurohit, N. Locatelli, T. W. Shimwell, R. Cassano, G. Di Gennaro, M. Brüggen, D. Wittor, A. Drabent, A. Ignesti
The compelling evidence for a steep spectral index, the existence of a spectral break above 1. 5 GHz, and the dependence of radio and X-ray surface brightness correlation on frequency are interpreted in the context of turbulent reacceleration models.
Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics
1 code implementation • 30 Oct 2019 • A. Drabent, M. Hoeft, A. P. Mechev, J. B. R. Oonk, T. W. Shimwell, F. Sweijen, A. Danezi, C. Schrijvers, C. Manzano, O. Tsigenov, R. -J. Dettmar, M. Brüggen, D. J. Schwarz
The new generation of high-resolution broad-band radio telescopes, like the Low Frequency Array (LOFAR), produces, depending on the level of compression, between 1 to 10 TB of data per hour after correlation.
Instrumentation and Methods for Astrophysics
1 code implementation • 19 Nov 2018 • S. Mooney, J. Quinn, J. R. Callingham, R. Morganti, K. Duncan, L. K. Morabito, P. N. Best, G. Gürkan, M. J. Hardcastle, I. Prandoni, H. J. A. Röttgering, J. Sabater, T. W. Shimwell, A. Shulevski, C. Tasse, W. L. Williams
We used the LOFAR Two-Metre Sky Survey (LoTSS) first data release value-added catalogue (LDR1) to study blazars in the low-frequency regime with unprecedented sensitivity and resolution.
High Energy Astrophysical Phenomena
1 code implementation • 1 Dec 2017 • A. P. Mechev, J. B. R. Oonk, A. Danezi, T. W. Shimwell, C. Schrijvers, H. T. Intema, A. Plaat, H. J. A. Röttgering
To complete the LoTSS project, the processing software needs to be made portable and moved to clusters with a high bandwidth connection to the data archive.
Instrumentation and Methods for Astrophysics