Director's Log
Pat Slane
Chandra X-ray Center director Pat Slane provides a recap of the past year and the outlook for the future, as well as a tribute to recent retirees.
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Contents
Issue 36 - Summer 2025
All CXC News Issues
The Legacy of 25 Years of Chandra
Amruta D. Jaodand & Dan Schwartz
In December, scientists from the world over converged at the Revere Hotel in downtown Boston to celebrate twenty-five years of Chandra. SOC co-chairs Amruta D. Jaodand and Dan Schwartz recap that exciting week, featuring awards and recognitions, reminiscences and looks forward, and talks and posters covering all of Chandra's wide contributions to astrophysics.
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CIAO in Lowell: X-rays, Data, and Lots of Learning and Fun!
Antonella Fruscione, for the CIAO Workshop Team
CIAO workshops have been a hallmark of the mission, whether held in Cambridge or India. This year, thanks to a generous grant from the Heising-Simons Foundation, the team held a Chandra/CIAO workshop at UMass Lowell completely free of charge for attendees. Antonella Fruscione recaps the event, a pilot in a larger program to bring the workshop to under-resourced and underrepresented institutions across the United States.
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Sharing the Universe: Chandra Public Engagement and the 25th Anniversary
Kimberly Arcand, Megan Watzke
The Communications and Public Engagement team continues to share the excitement of Chandra science with a global audience. In this article, Kimberly Arcand and Megan Watzke recount some of the many ways the team spread Chandra science as part of our 25th Anniversary, from the National Mall to NASA+ and everywhere in between.
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Project Science Report
Douglas Swartz (USRA/MSFC); Steven Ehlert & Steve O'Dell (NASA/MSFC)
The Project Science team reports on recent highlights, including the start of the Chandra Legacy Program, new synergies in time domain astrophysics, and a touching recognition of former Project Scientist Martin Weisskopf.
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Calibration Update
Larry David
Larry David provides an update on the work of the Calibrations group, which has been ensuring accurate calibration products are available to account for changes in temperature and gain for both ACIS and HRC.
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ACIS Instrument Update
Gregg Germain, for the ACIS Team
A lower perigee, a peaking solar cycle, and rising thermal limits for operation—the ACIS team has risen to these challenges and more! Gregg Germain reports for the ACIS team on updates to the operation and calibration of the ACIS instrument.
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HRC Update
Gerrit Schellenberger, Ralph Kraft, Dan Patnaude, Tom Gauron, & Grant Tremblay
The HRC has passed 3 megaseconds of observations since the 2023 return to science. The HRC team provides an update of what they and the instrument have been up to, including formal recognition from NASA for the anomaly recovery.
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Cycle 27 Peer Review
Rodolfo Montez Jr. and the Chandra Director's Office
Over the spring and summer, the Cycle 27 peer review was held and recommended 14.6 Ms of observations. Rodolfo Montez Jr. and the Chandra Director's Office describe the results of this process, including comparisons to historical trends.
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Updates on the NASA Hubble Fellowship Program
Aneta Siemiginowska
Another class of fellows has been selected for the NASA Hubble Fellowship Program. Science Lead Aneta Siemiginowska describes the state of the program, introduces the new fellows, and recaps the most recent symposium.
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