User Support Leader Steps Down

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User Support Leader Steps Down

Figure 22: Fred Seward.

Fred Seward formed the User Support group in 1993, long before there were any users, and long before there was a Chandra X-ray Observatory. The observatory, which was called AXAF while it was being built, would not be finished and launched until 1999. In 2000, the User Support group was restructured, and the Chandra Director's Office (CDO) was formed. Fred and Belinda Wilkes became Assistant Directors for the CXC. By the time he resigned in January 2004 (retired February, 2005) he had supervised the review of some 4,000 proposals for Chandra time, which recommended about 1,000 observing proposals for acceptance.

Seward was the natural and highly popular choice for the position when the AXAF Science Center (which was later renamed the Chandra X-ray Center) was established at the Smithsonian Astrophysical Observatory. He was highly regarded for his pioneering contributions to X-ray astronomy, and widely recognized as uniquely qualified in the practical, sometimes esoteric art of helping the scientific community use an X-ray observatory. From 1977 through 1981 he had organized and led the Einstein Observatory Guest Observer program.

The Einstein program helped bring about a sociological change in X-ray astronomy. A substantial amount of observing time was reserved for guest observers, thus making X-ray data available to a broad segment of the astronomical community for the first time. This helped propagate the notion that astronomy is best done by looking at the Universe over a wide range of wavelengths, and helped pave the way for the acceptance of the AXAF mission by NASA and the scientific community.

"The tremendous success of the Einstein Guest Observer program is testimony to Fred's leadership and commitment," said Harvey Tananbaum, Director of the Chandra X-ray Center. "Even more indicative of his effectiveness in this role over the years is the emphasis now placed on 'support to the community' at the Chandra X-ray Center. Fred's leadership has trained us all and has made it automatic for CXC staff to 'think of the observers' and how to assist them in their use of Chandra to maximize the science return from the mission."

That hasn't always been easy, largely because of the tremendous demand to use Chandra.

"With Einstein, we had half a dozen reviews," Seward recalled. "With 50-70 proposals in each review, and one committee, I would read them all, and could remember them all. With Chandra there are typically 800 proposals in each review, and one person cannot read or review all of them. The number of proposals was a surprise, as was the difficulty in dealing with so many proposals."

Because of this heavy case load, help from the astronomical community has been important and Seward praised the willingness of astronomers to volunteer their time. "It takes so much of their time and effort, but they are essential, particularly the panel chairs, who are the backbone of the review. Every year, unexpected problems arise such as a reviewer having to drop out at the last minute, and the panelists cope to produce a conscientious and competent review."

The key to the success of the program, and the highlight of his tenure, Seward said, "Has been the high quality of the CDO staff. Belinda Wilkes (now group leader as the Assistant Director of the CXC), Andrea Prestwich, Nancy Evans, Paul Green, Diane Hall (of the Data Systems group), and the CDO Computer Specialists are all very competent and great to work with. We couldn't have done it without them."

What's next for Seward?

"I want to finish the analysis of the data on the Crab Nebula’s X-ray halo, and three supernova remnants in the Large Magellanic Cloud. I also hope to update the book (his book with Phil Charles, Exploring the X-ray Universe, published by Cambridge U. Press in 1995)."

And yes, he does intend to submit Chandra observing proposals to the CXC.

Wallace Tucker


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