Dr. Jack B. Zirker

Jack B. Zirker donned the robes of astronomer emeritus on 1 January 1996. In addition to his prominent scientific career, Jack played a pivotal role in the evolution of the solar facilities on Sacramento Peak and in the formation of the National Solar Observatory. Jack first came to Sunspot in 1954 as a summer student. He received his PhD from Harvard in 1956 for investigations in collaboration with R.N. Thomas and R.G. Athay on the temperature structure of the chromospheres and lower corona derived from non-LTE analysis. During the years 1956-1964 at Sacramento Peak, Jack's work included elucidating the properties of photospheric filigree, a fine-scale magnetic structure discovered by R.B. Dunn. Between 1964 and 1976, Zirker was a professor at the University of Hawaii and participated in the development of Mauna Kea as an observing site. Jack returned to Sunspot in 1976 to assume the directorship of the Sacramento Peak Observatory, which had just been transferred from the US Air Force to the National Science Foundation. His leadership was strongly felt during those years of transition and re-orientation. In the early 1980s, Jack was instrumental in the formation of the National Solar Observatory as a consolidation of SPO with the solar section of the Kitt Peak National Observatory and, shortly thereafter, as a division of NOAO. Jack Zirker's broad scientific interests are reflected in over a hundred scientific papers and several books, including a well-known monograph on solar eclipses and a recently-completed biography of Robert Dicke. His research has included mechanisms of coronal heating, the physics of prominences and their fine structure, flare mechanisms and energy distribution, and the use of non-redundant arrays for high-resolution imaging.

Broadcast 2162 (Special Edition)

Guest: Dr. Jack Zirker. Topics: The Science of Ocean Waves. Please direct all comments and questions regarding Space Show programs/guest(s) to the Space Show blog, http://thespaceshow.wordpress.com. Comments and questions should be relevant to the specific Space Show program. Written Transcripts of Space Show programs are a violation of our copyright and are not permitted without prior written consent, even if for your own use.

Broadcast 1286 (Special Edition)

Guest: Dr. J.B. Zirker. Topics: Magnetic fields, solar magnetism, astrophysics, astronomy, telescopes. We welcomed Dr. J.B. Zirker to the program today to discuss his new book, "The Magnetic Universe: The Elusive Traces of an Invisible Force." The book is now on the One Giant Leap Foundation book website and if you buy it here, Amazon makes an important contribution to The Space Show. Here is the direct purchase URL: www.amazon.com/dp/080189302X?tag=onegialeafou-20. In our first of four segments, Dr.

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