Chandra Users' Committee

Upcoming Meeting #54

Thursday, 23 May
10AM-Noon (EDT)

Past Meetings

Meeting Agendas, Reports and Letters from the CUC, and CXC Responses

Chandra Users' Committee Membership List

The Users' Committee represents the larger astronomical community. If you have questions or concerns about Chandra, you may contact one or more of the members listed below.

  • Kristin Madsen
    (CUC Chair)
  • Goddard Space Flight Center
  • Fall 2022-Spring 2024
  • Marcella Brusa
  • Università di Bologna
  • Fall 2023-Spring 2026
  • Chris Fryer
  • Los Alamos National Lab
  • Spring 2021-Spring 2024
  • Anjali Gupta
  • Columbus State Community College
  • Spring 2021-Spring 2024
  • Tesla Jeltema
  • UC Santa Cruz
  • Fall 2022-Spring 2025
  • Silas Laycock
  • UMass Lowell
  • Fall 2022-Spring 2025
  • Dave Pooley
  • Trinity University
  • Spring 2021-Spring 2024
  • Takanori Sakamoto
  • Aoyama Gakuin University
  • Fall 2022-Spring 2025
  • Tea Temim
  • Princeton University
  • Fall 2022-Spring 2025
  • Brian Williams
  • Goddard Space Flight Center
  • Spring 2021-Spring 2024

Ex Officio, Non-Voting

  • Steven Ehlert
  • Stefan Immler
  • Janet Letchworth
  • Stephen O'Dell
  • Doug Swartz

CXC Coordinator

  • Antonella Fruscione
  • CXC Director's Office

Previous Users' Committee Members

Purpose of the Users' Committee

The Chandra Users Committee (CUC) exists to ensure broad-based community input to the Chandra X-Ray Center (CXC) functions and provides general users with a formal mechanism for channeling suggestions and/or concerns to the CXC. It ensures that the CXC, the general users, and NASA regularly meet together to discuss the running of the CXC and the needs of Chandra users. The committee is advisory to the CXC and makes its report available to the Director.


The committee consists of 10 members representing the Chandra users community plus a few ex-officio members from NASA. The NASA members do not participate in the executive session. The committee is Chaired by one of its senior members, appointed by the CXC Director.

Members will be appointed by the Chair and CXC Director in concurrence. The principal basis for selection will be scientific and/or technical expertise. Expertise of members spans a range of scientific areas, and includes experience in observing, theory, and instrumentation, with familiarity with Chandra and X-ray astronomy a common denominator among members.

A reasonable effort will be made to achieve a committee that is representative of the variety of user institution environments (academic and other institutions); large and small organizations; geographic distribution; etc. Members will normally serve for 3 years, and membership will be rotated. The names of committee members, along with the meeting schedules, are widely disseminated so that Chandra users have the opportunity to discuss their questions and concerns with committee members before the meetings.


Members normally serve for 3 years starting with the fall meeting. The CUC has two meetings per year, with one in the spring (generally remote) and one in the fall (generally in person).