A radio ridge connecting two galaxy clusters in a filament of the cosmic web
Artikel i vetenskaplig tidskrift, 2019

Galaxy clusters are the most massive gravitationally bound structures in the Universe. They grow by accreting smaller structures in a merging process that produces shocks and turbulence in the intracluster gas. We observed a ridge of radio emission connecting the merging galaxy clusters Abell 0399 and Abell 0401 with the Low-Frequency Array (LOFAR) telescope network at 140 megahertz. This emission requires a population of relativistic electrons and a magnetic field located in a filament between the two galaxy clusters. We performed simulations to show that a volume-filling distribution of weak shocks may reaccelerate a preexisting population of relativistic particles, producing emission at radio wavelengths that illuminates the magnetic ridge.

Diffuse radio

extraterrestrial matter

magnetic field

Författare

F. Govoni

Ist Nazl Astrofis

E. Orru

Netherlands Institute for Radio Astronomy (ASTRON)

A. Bonafede

Universita di Bologna

Ist Nazl Astrofis

M. Iacobelli

Netherlands Institute for Radio Astronomy (ASTRON)

R. Paladino

Ist Nazl Astrofis

F. Vazza

Ist Nazl Astrofis

Universität Hamburg

Universita di Bologna

M. Murgia

Ist Nazl Astrofis

V. Vacca

Ist Nazl Astrofis

G. Giovannini

Universita di Bologna

Ist Nazl Astrofis

L. Feretti

Ist Nazl Astrofis

F. Loi

Ist Nazl Astrofis

Universita di Bologna

G. Bernardi

Square Kilometre Array

Ist Nazl Astrofis

Rhodes University

C. Ferrari

Univ Cote dAzur

R. F. Pizzo

Netherlands Institute for Radio Astronomy (ASTRON)

C. Gheller

Ecole Polytechnique Federale De Lausanne

S. Manti

Scuola Normale Superiore di Pisa

M. Bruggen

Universität Hamburg

G. Brunetti

Ist Nazl Astrofis

R. Cassano

Ist Nazl Astrofis

F. de Gasperin

Universiteit Leiden

T. A. Ensslin

Ludwig-Maximilians-Universität München

Max Planck-institutet

M. Hoeft

Thüringer Landessternwarte Tautenburg

Cathy Horellou

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik, Extragalaktisk astrofysik

H. Junklewitz

Argelander-Institut für Astronomie

H. J. A. Rottgering

Universiteit Leiden

A. M. M. Scaife

University of Manchester

T. W. Shimwell

Universiteit Leiden

Netherlands Institute for Radio Astronomy (ASTRON)

R. J. van Weeren

Universiteit Leiden

M. Wise

Netherlands Institute for Space Research (SRON)

Netherlands Institute for Radio Astronomy (ASTRON)

Science

0036-8075 (ISSN)

Vol. 364 6444 981-984

Ämneskategorier

Astronomi, astrofysik och kosmologi

Fusion, plasma och rymdfysik

Den kondenserade materiens fysik

DOI

10.1126/science.aat7500

PubMed

31171695

Mer information

Senast uppdaterat

2019-10-17