17A Semester

17A Proposal Call

17A Proposal Call Results

A total of 70 proposals requesting NSF funded “open skies” time were submitted to the Green Bank Observatory’s Robert C. Byrd Green Bank Telescope (GBT)  for semester 17A.  Proposals are reviewed on a competitive basis with a panel review system (see Proposal Review System).  Below are the statistics by proposal count and hours.  The oversubscription is the ratio of the number of submitted proposals to the number of approved proposals.  The pressure is the ratio of the requested time to the available time in hours.  Here we only include proposals submitted for the 17A semester that have been reviewed by the Green Bank Observatory Telescope Allocation Committee (TAC).

A description of the 17A proposals accepted can be found in the Science Program section below.

Total Proposals70
Statistics by Proposal Count
Requested Time5125 h
Available Time2615 h
Approved1105 h
Filler1534 h
Rejected2486 h
Statistics by Proposal Hours

GBT Pressure Plots

Observations in high frequency bands require better weather conditions than observations in lower frequency bands. The GBT uses three weather categories: poor (for observations below 8 GHz), good (observations between 8-18 GHz and 26.5-50 GHz), and excellent (observation in the 18-26.5 GHz band and above 50 GHz).  The first three figures below show the pressure plots for each these weather categories.  The last figure includes all weather categories.  The grey horizontal line shows the total available hours.  The letters A, B, and C correspond to the priorities assigned by the TAC where A and B are approved time and C is filler time.  Carryover is time allocated by a TAC from a previous semester that is being executed in the 17A semester.

GBT Observation Preparation

Please use the GBT Dynamic Scheduling System (DSS) to enable observing sessions, select observers for your project, and enter your blackout dates. The DSS Home Page has additional information about the DSS.  See GBT Observing for information about how to prepare for your observations.

Please note that the DSS uses the average Right Ascension (RA) and Declination (Dec) of all sources within a session.  The average RA and Dec will be used to determine when the session can be scheduled.  You will need to carefully check the RA and Dec, along with the minimum and maximum session lengths, to make sure that these values are satisfactory and will allow all your sources to be observed before enabling the session.

17A Science Program

A total of 70 proposals requesting NSF funded “open skies” time were submitted to the Green Bank Observatory’s Robert C. Byrd Green Bank Telescope (GBT) were received for the August 1, 2016 deadline for semester 17A.  The table below summarizes the approved observing programs for the GBT.  Listed are the PI name, proposal ID, proposal title, maximum hours approved and proposal type (Regular, Triggered, Large or External).  Proposals from previous semesters that were awarded time in the 17A semester are included.  The table also includes HSA and GMVA proposals that were awarded time on the GBT as a VLBI station as well as proposal accepted via external agreements with CHANDRA, Hubble Space Telescope, FERMI and Swift.

For each approved program, the Proposal Finder Tool will have access to its author, title, abstract and total approved hours.

A description of the Time Allocation Committee report for 17A can be found in the Proposal Call Results section above.

Alves, FelipeGBT17A-200Kinematics of the dense gas in a magnetized prestellar core16.00Regular
Anderson, LorenGBT17A-205The Connection Between the Warm Ionized Medium and HII Regions53.00Regular
Asada, KeiichiGMVA16B-346Ultra-deep imaging of the BH jet base and accretion flow of M87 from 100 to 7 Rs14.00Regular
Baczko, Anne-KathrinGMVA16B-169Probing the Jet-Collimation Region in NGC1052 with high-fidelity mm-VLBA imaging14.00Regular
Bogdanov, SlavkoCH18500414Coordinated X-ray and Radio Observations of the Repeating Fast Radio Burst FRB 1211026.00External
Braatz, JamesGBT16A-215Completing the Megamaser Cosmology Project12.00Large
Brinkerink, ChristianGMVA16B-312Imaging the Global Magnetic-Field Structure Near Sgr A*: 3mm VLBI with GMVA+ALMA8.00Regular
Britzen, SilkeGMVA16B-191Solving the jet launching mystery in M87 with GMVA+ALMA observations20.00Regular
Cameron, AndrewGBT17A-160A new eccentric Double Neutron Star system – the most relativistic binary pulsar58.50Regular
Crichton, DevinGBT17A-367MUSTANG-2 Observations of an SZE selected sample of ACT Galaxy Clusters48.00Regular
Cromartie, ThankfulGBT17A-230Black Widow MSP Observations for NANOGrav Inclusion and Astrophysical Study46.50Regular
Cunningham, NicholGBT17A-369A Northern Hemisphere Pilot Survey of 6.7GHz Methanol Masers towards W334.00Regular
DeCesar, MeganGBT17A-353High-Impact MSPs for the International Pulsar Timing Array21.00Regular
DeCesar, MeganGBT17A-394A Search for Pulsed Emission from MSP Candidates in Globular Clusters30.00Regular
Demorest, PaulGBT15B-160The North American Nanohertz Observatory for Gravitational Waves183.00Large
Di Francesco, JamesGBT16B-278KEYSTONE: KFPA Examinations of Young Stellar (O-star) Natal Environments82.00Large
Dicker, SimonGBT17A-340Investigating the composition of AGN plasma bubbles in galaxy clusters.30.00Regular
Engelke, PhilipGBT17A-375Structure of Dark Gas in Star-Forming Regions: OH Excitation Temperatures28.00Regular
Engelke, PhilipGBT17A-386Structure of Dark Gas in Star-Forming Regions: Continuing OH Survey in W598.00Regular
Ginsburg, AdamGBT17A-195MUSTANG Galactic Plane survey pilot: Protoclusters & Massive Stars31.00Regular
Goldsmith, PaulGBT17A-035Accretion onto Filaments in Molecular Clouds – copy22.00Regular
Hallinan, GregBH181Dynamical Masses of A Brown Dwarf Binary5.00Regular
Howk, ChristopherHST-241056The Perseus Project: Probing Metal Mixing, Dust Destruction, and Kinematics in the Vertical Extension of the Perseus Arm2.5External
hu, wenkaiGBT17A-221Follow-up of one candidate 21 cm absorber found by blind searching12.00Regular
Jackson, JamesGBT16A-353The Radio Ammonia Mid-Plane Survey69.00Large
Jones, GlennGBT17A-259Investigating anomalous microwave emission in the S140 region9.75Regular
Kalensky, S. V.GBT17A-164Confirming Interstellar Benzonitrile (c-C6H5CN)15.75Regular
Karim, AlexanderGBT17A-271The GOODS-North 3mm MUSTANG 2 deep survey32.00Regular
Kepley, AmandaGBT17A-212The Highest Resolution Map of High Density Gas in a Star-Forming Spiral Galaxy18.50Regular
Kepley, AmandaGBT17A-304Extragalactic GBT+ARGUS Gas Density Survey167.00Large
Kovalev, YuriGBT16B-199Evolution of High Brightness Temperature AGN Cores with RadioAstron78.00Regular
Kramer, MichaelGBT16B-249Timing and General Relativity in the Double Pulsar System52.25Regular
Loinard, LaurentGBT17A-229Constraining the structure of the solar-type protostar I16293-2422 with MUSTANG21.25Regular
Lovell, AmyGBT17A-377OH Observations of 41P/Tuttle-Giacobini-Kresak and 45P/Honda-Mrkos-Pajduskov28.25Regular
Lu, RusenVLBA17A-182How does the M87 jet accelerate?40.00Regular
Lynch, RyanGBT17A-319Multi-frequency GBT Observations of the Repeating Fast Radio Burst FRB 121102144.00Regular
Lynch, RyanGBT17A-320Continuing the 820 MHz GBT Pulsar Survey of Cygnus and the North Galactic Plane240.00Large
Madison, DustinGBT17A-334A Search for Radio Transients Generated by Short Gamma-Ray Burst Remnants52.00Regular
Mantz, AdamGBT17A-277MUSTANG-2 High-resolution Imaging of the SZ Effect from Distant XXL Clusters21.00Regular
Marscher, AlanGMVA16B-113Imaging of the Gamma-Ray Emitting Regions of Blazar Jets48.00Regular
Mason, BrianGBT17A-358Detailed Sunyaev-Zel’dovich Effect Imaging of z >1 Galaxy Clusters66.50Regular
Masters, KarenGBT17A-012HI-MaNGA: HI Followup for MaNGA Galaxies705.25Large
McGuire, BrettGBT17A-056PRIMOS-2: Line Surveys of Molecule-Rich Sources48.50Regular
McLaughlin, MauraGBT17A-102A Candidate Eccentric Redback Pulsar with an Unusually Massive Secondary6.00Regular
Melis, CarlVLBA16A-348Pleiades Binaries for the Masses20.00Regular
Nagai, HiroshiGMVA16B-101GMVA+ALMA Observation of the Innermost Jet in 3C 8412.00Regular
Ransom, ScottGBT17A-305Long Term Timing of 56 Recycled Pulsars in Bulge Globular Clusters40.00Regular
Ransom, ScottGBT16B-303Continued Timing of a Millisecond Pulsar in a Stellar Triple System20.5Regular
Shirley, YancyGBT17A-245ARGUS Mapping of Infall toward Massive Starless Clump Candidates60.00Regular
Spekkens, KristineGBT17A-188Probing the asymmetric satellite population of M10132.50Regular
Stovall, KevinGBT17A-381Continuing the GBT All-Sky 350-MHz Pulsar Survey270.00Large
Wolfe, SpencerGBT17A-324The M31-M33 HI Stream: Working Toward a Complete Picture100.00Regular
Zaw, IngyinVLBA17A-399Resolving AGN Obscuration: NGC 106812.00Regular

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