A radio counterpart to a neutron star merger
MetadataShow full item record
Gravitational waves have been detected from a binary neutron star merger event, GW170817. The detection of electromagnetic radiation from the same source has shown that the merger occurred in the outskirts of the galaxy NGC 4993, at a distance of 40 megaparsecs from Earth. We report the detection of a counterpart radio source that appears 16 days after the event, allowing us to diagnose the energetics and environment of the merger. The observed radio emission can be explained by either a collimated ultrarelativistic jet, viewed off-axis, or a cocoon of mildly relativistic ejecta. Within 100 days of the merger, the radio light curves will enable observers to distinguish between these models, and the angular velocity and geometry of the debris will be directly measurable by very long baseline interferometry.
Showing items related by title, author, creator and subject.
Randall, S.; Clarke, T.; Van Weeren, R.; Intema, Hubertus; Dawson, W.; Mroczkowski, T.; Blanton, E.; Bulbul, E.; Giacintucci, S. (2016)© 2016. The American Astronomical Society. All rights reserved.. We present results based on X-ray, optical, and radio observations of the massive galaxy cluster CIZA J0107.7+5408. We find that this system is a ...
Mooley, K.; Nakar, E.; Hotokezaka, K.; Hallinan, G.; Corsi, A.; Frail, D.; Horesh, A.; Murphy, T.; Lenc, E.; Kaplan, D.; De, K.; Dobie, D.; Chandra, P.; Deller, A.; Gottlieb, O.; Kasliwal, M.; Kulkarni, S.; Myers, S.; Nissanke, S.; Piran, T.; Lynch, Christene; Bhalerao, V.; Bourke, S.; Bannister, K.; Singer, L. (2018)GW170817 was the first gravitational-wave detection of a binary neutron-star merger1. It was accompanied by radiation across the electromagnetic spectrum and localized2 to the galaxy NGC 4993 at a distance of 40 megaparsecs. ...
A CO-rich merger shaping a powerful and hyperluminous infrared radio galaxy at z = 2: The Dragonfly GalaxyEmonts, B.; Mao, M.; Stroe, A.; Pentericci, L.; Villar-Martín, M.; Norris, R.; Miley, G.; De Breuck, C.; Van Moorsel, G.; Lehnert, M.; Carilli, C.; Röttgering, H.; Seymour, Nick; Sadler, E.; Ekers, R.; Drouart, G.; Feain, I.; Colina, L.; Stevens, J.; Holt, J. (2015)In the low-redshift Universe, the most powerful radio sources are often associated with gas-rich galaxy mergers or interactions. We here present evidence for an advanced, gas-rich (‘wet’) merger associated with a powerful ...