Lyman-alpha Observations of a z=10.15 Powerful Radio Galaxy
Abstract
Powerful radio galaxies have been unique probes of the distant Universe for many decades. This proposal requests WFC3 grism and imaging observations to characterize the Lyman-alpha break/emission line in a redshift 10.15 powerful radio galaxy. This detection would be by far the most distant super-massive black hole (SMBH) and active galactic nucleus (AGN) known. At this redshift the radio galaxy would lie at the centre of a highly ionised Stromgren sphere ionised by star-formation, inverse Compton emission from the jets, and possibly accretion onto the SMBH. As well as reafirming the redshift of the host, these observations will potentially reveal the complex interaction of this radio-loud AGN with its local environment. Due to the poor transmission of the Earth's atmosphere, Hubble is the only facility which can conduct these observations.
- Publication:
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HST Proposal
- Pub Date:
- May 2020
- Bibcode:
- 2020hst..prop16184S