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
no code implementations • 21 Dec 2020 • C. Tiburzi, G. M. Shaifullah, C. G. Bassa, P. Zucca, J. P. W. Verbiest, N. K. Porayko, E. van der Wateren, R. A. Fallows, R. A. Main, G. H. Janssen, J. M. Anderson, A-. S. Bak Nielsen, J. Y. Donner, E. F. Keane, J. Künsemöller, S. Osłowski, J-. M. Grießmeier, M. Serylak, M. Brüggen, B. Ciardi, R. -J. Dettmar, M. Hoeft, M. Kramer, G. Mann, C. Vocks
In a previous paper we studied the Solar-wind (SW) models used in pulsar timing to mitigate the excess of DM annually induced by the SW, and found these to be insufficient for high-precision pulsar timing.
High Energy Astrophysical Phenomena
no code implementations • 15 Dec 2020 • T. H. Reiprich, A. Veronica, F. Pacaud, M. E. Ramos-Ceja, N. Ota, J. Sanders, M. Kara, T. Erben, M. Klein, J. Erler, J. Kerp, D. N. Hoang, M. Brüggen, J. Marvil, L. Rudnick, V. Biffi, K. Dolag, J. Aschersleben, K. Basu, H. Brunner, E. Bulbul, K. Dennerl, D. Eckert, M. Freyberg, E. Gatuzz, V. Ghirardini, F. Käfer, A. Merloni, K. Migkas, K. Nandra, P. Predehl, J. Robrade, M. Salvato, B. Whelan, A. Diaz-Ocampo, D. Hernandez-Lang, A. Zenteno, M. J. I. Brown, J. D. Collier, J. M. Diego, A. M. Hopkins, A. Kapinska, B. Koribalski, T. Mroczkowski, R. P. Norris, A. O'Brien, E. Vardoulaki
We used dedicated SRG/eROSITA X-ray, ASKAP/EMU radio, and DECam optical observations of a 15 sq. deg region around the interacting galaxy cluster system A3391/95 to study the warm-hot gas in cluster outskirts and filaments, the surrounding large-scale structure and its formation process.
Cosmology and Nongalactic Astrophysics High Energy Astrophysical Phenomena
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
