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Download 300 MHz - 3 GHz Yes, we`re interested
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Transcript
300 MHz - 3 GHz Yes, we're interested Big Science Driver: Galaxy Assembly and Evolution • HI: heard several times about billion galaxies to z=1.5. And further… • Diffuse HI (cosmic web) - IGM-galaxy feedback poorly understood aspect of galaxy formation • Local HI mass function, probe low-mass end, in various environments HVC/dwarfs Cosmic Magnetism • HI wrt young stars: HI outflows, and Zeeman splitting (also OH) - importance of magnetic fields vs. turbulence • Continuum: extragalactic - cosmic magnetism (Faraday rotation). Galactic magnetic fields, cluster magnetic fields, the cosmic web itself? Fundamental Physics • Pulsars! Compelling science case, welltimed pulsars - gravitational wave antenna (LISA/Advanced LIGO measure masses < 10^6 M_sun) Radio Synoptic Sky Telesope • Surveying the sky fast and faint (microJy) • Magnetar flares to z~0.1 • GRBs • Supernova factories - direct measurement of star formation rates What New Instrument? • HI surface brightness sensitivity: baselines 10's of meters to 1000's of kms, heavy weighting within 50 km • microJy per 1 km/s spectral channel (MW at z=1, 10^3-4 M_sun cloud at Virgo) • Pulsars drive time resolution
