ASTR 511 (O'Connell) Lecture Notes



EM SPECTRUM:
DISCOVERY & DIAGNOSTICS


EM REGION RELATIVE
WAVELENGTH
NEW PHENOMENA KEY DIAGNOSTIC
FOR
RADIO             106 AGN, jets,
CMB,
Pulsars
Neutral ISM,
Molecular ISM
IR             100 Protostars Dust, Cold ISM,
Shrouded Starbursts,
z > 3 Galaxies
OPTICAL             1.0 Planets, Stars,
Galaxies,
The Universe
Almost all
UV             0.1 Intergalactic
Medium
Massive Stars,
Hot & Cold ISM,
AGN
X-RAY             10-4 XR Binaries,
Hot ICM
Hot ISM,
AGN
GAMMA RAY             10-6 GR Bursters  





Perspective question: what would we know about the universe today if Earth had an atmosphere which was optically thick in the UVOIR? Would science other than astronomy be as well developed as now?