- NEWS
- June 09, 2009 Radio Telescopes Extend Astronomy's Best "Yardstick," Provide Vital Tool for Unraveling Dark Energy Mystery
- May 27, 2009 Green Bank Telescope participates in discovery of radio supernova in M82
- May 21, 2009 "Missing Link" Revealing Fast-Spinning Pulsar Mysteries
- May, 2009 GBT High Frequency Efficiency Improvements
- April 8, 2009 Senator Byrd Dedicates Science Center
- March 23, 2009 Job openings with the GBT
- February 28, 2009 MUSTANG Commissioning, and GBT Surface Improvements in the February edition of the NRAO "e-newsletter"!
- October 29, 2008 Karen O'Neil New Assistant Director for Green Bank Operations
- October 8, 2008 Young Galaxy's Magnetic Field Surprises Astronomers Listen to the NPR podcast!
- EVENTS
- June 19, 2009 Our next 365 Days of Astronomy Podcast featuring: A Modest Black Hole with UCLA Astronomer Mark Morris
- June 24-27 6th Annual Green Bank StarQuest
- July 12-18, 2009 Fifth NAIC/NRAO Single Dish Summer School, Arecibo Observatory
Welcome to the NRAO in Green Bank, West Virginia
NRAO operates the Robert C. Byrd Green Bank Telescope (GBT), the world's largest fully steerable single aperture antenna. In addition to the GBT, several other telescopes exist at the Green Bank site.
Image Credit: Bob Anderson, NRAO/AUI
GBT sees Sunyaev-Zel'dovich effect -- the interaction of high energy electrons with the cosmic microwave background radiation!
Image of the ultra-luminous galaxy cluster RXJ1347-1145 in the optical (green - HST), xray (blue - Chandra), and millimeter (pink - GBT+MUSTANG).
The GBT image reveals a clear decrement in the microwave background, caused by the x-ray emitting plasma between the galaxies, that is offset from the peak x-ray signal by a merger-induced shock which has increased the gas temperature locally by more than a factor of two. This is the highest resolution (9") image of the SZ effect to date.
MUSTANG is a collaboration between the University of Pennsylvania and the NRAO, as well as NASA, The National Institute of Standards and Technology, and Cardiff University. More information is available at http://www.gb.nrao.edu/mustang/



