ESSENTIAL RADIO ASTRONOMY

J. J. Condon and S. M. Ransom
National Radio Astronomy Observatory

Essential Radio Astronomy (ERA) is a one-semester course intended for astronomy graduate students and advanced undergraduates with backgrounds in astronomy, physics, or engineering. The goal of ERA is fostering the community of researchers using radio astronomy by attracting and training the most talented university students. Therefore we are making ERA available via the world wide web at no cost.

ERA greatly simplifies the task of teaching radio astronomy at the university level. Although ERA is web-based, the text consists of full sentences and paragraphs, not just lecture notes or Powerpoint bullets; and all equations are legibly rendered in TeX. ERA also includes ten sets of problems and a final exam, with solutions. We developed ERA in 2000, 2002, and 2006 for the University of Virginia radio-astronomy course ASTR 534. ERA allowed us to use a computer and projector to display the web pages in class, nearly eliminating the need to write equations and drawings on a blackboard. Prior to each class we handed out printed versions of these pages so the students could follow the lectures without the distraction of copying everything into their notebooks. ERA is also suitable for individual or directed-study courses that don't involve lectures.

To reach the widest possible student audience, we made ERA sufficiently complete and self-contained that its only prerequisites are basic calculus physics courses covering elementary classical mechanics, macroscopic thermodynamics (e.g., the first and second laws of thermodynamics), electromagnetism, and quantum mechanics (quantization of energy and angular momentum). Courses in electromagnetism using vector calculus, special relativity, statistical thermodynamics, advanced quantum mechanics, or astronomy are not required. Although ERA can be used alone, we recommend the textbook Tools of Radio Astronomy (4th Edition) by K. Rohlfs & T. L. Wilson as a reference for advanced students interested in "the tools that a radio astronomer needs to pursue his trade."

Instructors or students interested in using ERA are welcome to contact us with questions, suggestions, corrections, etc. ERA currently includes only the most essential material that can be covered in one semester. We anticipate adding new material in the future and invite contributions from experts.