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Showing 1–3 of 3 results
Advanced filters: Author: S. Giacintucci Clear advanced filters

  • Long-period radio transients emit powerful polarized signals lasting minutes to an hour. The discovery of ASKAP J1935+2148, a source showing diverse emission modes that resemble neutron-star behaviour, challenges existing ideas of these phenomena.

    • M. Caleb
    • E. Lenc
    • B. W. Stappers
    ResearchOpen Access
    Nature Astronomy
    Volume: 8, P: 1159-1168

  • Clusters of galaxies are the largest gravitationally bound objects in the Universe. Magnetic fields and relativistic particles are mixed with the gas as revealed by giant 'radio haloes'. A radio halo at low frequencies associated with the merging cluster Abell 521 is reported. This halo has an extremely steep radio spectrum that makes it difficult to detect with observations at 1.4 GHz. The spectrum supports a turbulent acceleration mechanism, which predicts that many radio haloes in the Universe should emit mainly at low frequencies.

    • G. Brunetti
    • S. Giacintucci
    • M. Markevitch
    Research
    Nature
    Volume: 455, P: 944-947

  • The discovery of a long-period radio transient, GPM J1839–10, prompted a search of radio archives, thereby finding that this source has been repeating since at least 1988.

    • N. Hurley-Walker
    • N. Rea
    • A. Williams
    Research
    Nature
    Volume: 619, P: 487-490