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2024a Results

24a Green Bank Observatory Time Allocation Committee Report

A total of 61 proposals requesting NSF funded “open skies” time were submitted to the Green Bank Observatory’s Robert C. Byrd Green Bank Telescope (GBT) for semester 24A. Proposals are reviewed on a competitive basis with a panel review system (see Proposal Review System).

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Green Bank Observatory 2024A Science Program

A total of 61 proposals requesting NSF funded “open skies” time were submitted to the Green Bank Observatory’s Robert C. Byrd Green Bank Telescope (GBT) for the August 2, 2023 semester 24A deadline . The table below summarizes the approved observing programs. Listed are the PI name, proposal ID, proposal title, maximum hours approved and proposal type (Regular, Triggered, Large or External).

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Bar Ammonia Radiation in Filaments, Lanes, and YSOs Survey (BARFLYS)

The dust lane features within galaxy bars are thought to mediate the flow of material from the disk to the nucleus, fueling the extreme environment found within the inner regions of galaxies. Our team recently proposed a pilot study with the GBT, targeting the midpoint of the Milky Way’s Galactic Bar Dust Lanes. These NH3 observations, tracing the dense gas structure, showed both compact and extended emission that closely traces the 250 micron dust continuum. Here we propose to expand on the pilot and obtain full coverage of the Milky Way Galactic Bar Dust Lanes using the KFPA receiver on the GBT (BARFLYS: Bar Ammonia Radiation in Filaments, Lanes, and YSOs Survey) to address the following science questions:

  1. Where is the dense gas located in the Dust Lanes?
  2. How do the dense gas properties (i.e., temperature, turbulence) vary across the extent of the Dust Lanes?
  3. How do the dense gas properties compare to clouds in the Galactic Disk and the CMZ?
  4. What is the dense gas accretion rate into the CMZ?
  5. What are the initial conditions of the dense gas accreting into the CMZ?

Collaborators:

New type of Fast Radio Burst discovered in Green Bank Telescope data

Eight ultra-fast bursts lasted only ten millionths of a second or less

Artist’s impression of the discovery of microsecond Fast Radio Bursts being observed by the Green Bank Telescope. Incoming radio waves are shown as white, red, and orange streaks that follow each other in rapid succession. The long red streaks are the previously known millisecond flashes. (c) Daniëlle Futselaar/www.artsource.nl

An international team of researchers have discovered radio pulses from the distant universe that last only millionths of a second. They found these microsecond bursts after a meticulous examination of archival data from the National Science Foundation’s Green Bank Telescope. It’s unclear how the ultrafast bursts were created. The researchers published their findings in Nature Astronomy.

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Five Decades of Groundbreaking Millimeter Astronomy—From Discovering Molecules in Space to Imaging New Solar Systems

Associated Universities, Inc. (AUI) and the National Radio Astronomy Observatory (NRAO) have awarded the 2023 Karl G. Jansky Lectureship to Dr. Paul A. Vanden Bout, Senior Scientist, Emeritus at NRAO. The Jansky Lectureship is an honor established by the trustees of AUI to recognize outstanding contributions to the advancement of radio astronomy.

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