Search Results for author: H. J. A. Röttgering

Found 4 papers, 2 papers with code

Downstream depolarization in the Sausage relic: a 1-4 GHz Very Large Array study

no code implementations12 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

Physical insights from the spectrum of the radio halo in MACS J0717.5+3745

no code implementations28 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

Blazars in the LOFAR Two-Metre Sky Survey First Data Release

1 code implementation19 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

An Automated Scalable Framework for Distributing Radio Astronomy Processing Across Clusters and Clouds

1 code implementation1 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

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