Observing > Prop Eval & Time Alloc > Approved DDT Proposals

Approved DDT Proposals

by Davis Murphy last modified Nov 21, 2017 by Heidi Medlin

The table below lists proposals approved for Director's Discretionary Time (DDT) on the GBT, VLA or VLBA. The following is provided for each approved proposal: PI name, proposal ID, proposal title, date approved, maximum hours approved, and proprietary period in months. The table starts with submissions since 1 July 2013. Older approved DDT proposals will be added at some point.

For an approved DDT proposal, the Proposal Finder Tool will have access to its authors, title, abstract, and approved hours.

PIIDTitle

Date

M/D/Y

Hours

Proprietary Months

Jakob van den Eijnden VLA/17B-420 Radio jets in a super-Eddington accreting X-ray pulsar 11/13/2017 12.0 6
Xi Chen VLA/17B-417 A sensitive search for H2CO masers in evolved stars 10/31/2017 2.0 6
Stan Kurtz VLA/17B-408 Methanol Maser Activity During a Water Maser Super-Burst 10/12/2017 2.0 6
Jakob van den Eijnden VLA/17B-406 Radio emission from a newly discovered slow X-ray pulsar 10/06/2017 2.0 6
Gregory Sivakoff VLA/17B-403 Monitoring of the Extremely High Energy Neutrino IceCube-170922A Error Field 10/03/2017 6.0 6
Kunal Mooley VLA/17B-397 Continued Monitoring of the First Radio Afterglow of a Gravitational Wave Event 09/15/2017 32.0 6
Kevin Stovall VLA/17B-390 Localizing the Most Relativistic Binary Pulsar System 08/25/2017 4.0 6
Anna Ho VLA/17B-388 MAXI 170808A, A Short Soft X-ray Transient 08/18/2017 3.0 6
Allison Matthews VLA/17B-385 Star Formation Through Cosmic Time 08/17/2017 2.0 6
Dale Frail VLA/17B-384 Steep Spectrum Radio Sources Toward Fermi Unassociated Sources 08/16/2017 85.5 6
Kate Alexander VLA/17B-383 RS Emission in GRB 170810A: A Long Burst with a Bright Optical Counterpart 08/11/2017 9.0 6
Matt Nicholl VLA/17B-382 Mass-loss from the Pulsational Pair-Instability Supernova Candidate PS17brq 08/14/2017 1.5 6
Albert Kong VLA/17B-380 Radio Variability of the Gamma-ray Binary PSR J2032+4127 08/07/2017 0.6 6
Deanne Coppejans VLA/17A-480 SN2017ens: a Superluminous type-I SN with signs of interaction 07/25/2017 3.0 6
Marie-Lou Gendron Marsolais VLA/17A-475 Completing the JVLA 230-470 MHz view of the Perseus Cluster 07/07/2017 4.0 6
Cristina Romero-Canizales VLA/17A-470 Radio Evolution of an Exceptional Super-Luminous Supernova 06/29/2017 0.7 6
Eric Murphy VLA/17A-469 The Origin of Anomalous 33GHz Emission from a Circumnuclear Region in NGC4725 06/27/2017 1.3 6
Lorant Sjouwerman VLA/17A-467 BAaDE: Circumstellar shell SiO/infrared properties expanded 06/22/2017 25.0 6
Raffaella Margutti VLA/17A-466 Radio observations of the most nearby H-stripped Super-Luminous SN2017egm 06/19/2017 3.0 6
Cristina Romero-Canizales VLA/17A-464 Stringent radio constraint on an exceptional super-luminous supernova 06/19/2017 0.7 6
Joseph Helmbolt VLA/17A-460 Imaging the Impact of the 2017 Solar Eclipse on the Ionosphere/Plasmasphere 06/23/2017 3.0 6
Dale Gary VLA/17A-459 VLA Observations of the 2017 August 21 Solar Eclipse 06/23/2017 8.0 6
Deanne Coppejans VLA/17A-454 Constraining relativistic outflows and the environment of the peculiar SN2017ein 05/31/2017 9.0 6
Edo Berger VLA/17A-453 A Joint Radio-Optical Search for the Host Galaxy of FRB170107 05/26/2017 0.5 6
Benny Trakhtenbrot VLA/17A-443 A New Class of Transients in Nuclei of Galaxies: Testing Black Hole Physics 05/12/2017 2.0 6
Anna Ho VLA/17A-442 A Short Soft Transient from MAXI: Detection of a Dirty Fireball? 05/12/2017 3.0 6
Carl Melis VLA/17A-438 Accurate maser positions for VLBA parallax project BM457 05/03/2017 0.5 6
Chris Carilli VLA/17A-436 The cold dust in a bright quasar host galaxy at z=7.5 04/25/2017 3.0 6
Piergiorgio Casella VLA/17A-431 Constraining jet physics with multiwavelength variability studies of GRS1915+105 04/26/2017 2.0 6
Richard Plotkin VLA/17A-430 Swift J1753.5-0127: a reflaring black hole fading into quiescence 04/17/2017 3.0 6
Kishalay De VLA/17A-427 The radio afterglow of a unique Ca-rich gap transient: a tidal detonation event? 04/12/2017 2.0 6
Fabian Walter VLA/17A-426 The molecular gas reservoir in a bright quasar at z=7.5 04/11/2017 9.0 6
Chat Hull VLA/17A-425 DDT: Exploring New, Faint Structure Around NGG 1275 and NGC 1272 04/06/2017 6.0 6
Wenfei Yu VLA/17A-424 JVLA observation of an X-ray flaring event detected by MAXI 03/29/2017 2.0 6
Gregg Hallinan VLA/17A-422 Constraining the Size of the Radio Counterpart to the Repeating FRB 121102 03/20/2017 8.0 6
Jackie Villadsen VLA/16B-440 Simultaneous Radio and Optical Monitoring of Flare Star Wolf 359 02/07/2017 12.0 6
Rogier Windhorst VLA/16B-436 4x15 min VLA A-array Snapshots to check Calibrators for VLA--JWST NEP survey 01/27/2017 1.0 6
Paul Demorest VLA/16B-434 Pulsation Searches Toward Fermi Unassociated Sources 01/23/2017 6.0 6
Niklas Falstad VLA/16B-432 The OH outflow of the extremely obscured galaxy Zw049.057 01/10/2017 5.6 6
Stan Kurtz VLA/16B-431 Rare Excited OH Masers in a Massive Star Formation Region 01/05/2017 1.0 6

Charles Kilpatrick

VLA/16B-428 Late-Time Variability in the SN IIn 2008fq with the VLA 12/30/2016 1.5

6

Riccardo Cesaroni

VLA/16B-427 Following-up the first ever detected accretion burst in a high-mass YSO 12/21/2016 18.63

6

Deanne Coppejans

VLA/16B-425 First Radio Observations of a Rapid, Luminous and Blue Stellar Explosion 12/13/2016 7.0

6

Diaz Rodriguez

VLA/16B-417 Formation of Disks and Outflows in Uneven Close Binary Systems: The SVS13 Case 11/18/2016 1.0

6

Kai Yang

VLA/16B-409 Investigate 6.7 GHz methanol sources at high latitude 10/24/2016 2.0

6

Crystal Brogan

VLA/16B-402 An extraordinary outburst in the massive protostellar system NGC6334I-MM1 10/04/2016 10.5

6

Sarah Spolaor

VLA/16B-401 The FRB121102 Enigma at P-Band 09/28/2016 10.0

6

Maria Drout

VLA/16B-399 Probing the Evolutionary History of 'Non-Standard' SN Progenitors: SN2016gkg 09/27/2016 11.0

6

Matt Nicholl

VLA/16B-398 Constraining the mass-loss around the extraordinary interacting SLSN PS16dtm 09/21/2016 3.0

6

Daniel Perley

VLA/16B-396 Multifrequency Observations of a New Radio Transient in Cygnus A 09/16/2016 6.0

6

Jacob Jencson

VLA/16B-388 Radio Observations of an Obscured Supernova Candidate in M108 09/01/2016 2.0

6

Benjamin Gompertz

VLA/16B-386 What Happens When Neutron Stars Merge? The Test Case of GRB 160821B 08/30/2016 3.34

6

Sarah Spolaor

VLA/16B-385 The FRB121102 Enigma 08/29/2016 11.1

6

Jun Yi Koay

VLA/16B-382 Is the radio source in Mrk 590 strengthening as the changing-look AGN reignites? 08/10/2016 3.0

6

Daniel Perley

VLA/16B-381 A Radio Transient in Cygnus A 08/10/2016 4.0

6

Shami Chatterjee

VLA/16A-496 Localizing the Unique Repeating Fast Radio Burst 121102 with Prompt Observations 08/02/2016 36.0

6

Mark Reid

VLA/16A-495 Abosolute positions of masers near zero Declination for the BeSSeL Survey 08/01/2016 1.0

6

Anuj Sarma

VLA/16A-494 Empirical Determination of Methanol Zeeman Splitting Factor: A Pilot Observation 07/25/2016 3.0

6

Adrian Lucy

VLA/16A-490 Disk-Outflow Symbiosis from the 26th-anniversary Outburst of MWC 560 07/13/2016 12.0

6

Kunal Mooley

VLA/16A-483 Probing the Radio Emission from a Nearby Type Ia Supernova 06/10/2016 2.0

6

Kenneth Chambers

VLA/16A-478 PS16cgx - a possible counterpart to the neutrino event IceCube 160427A 06/02/2016 1.0

6

Atish Kamble

VLA/16A-477 Search for a relativistic outflow in SN 2016coi/ASASSN-16fp 06/02/2016 2.0

6

Raffaella Margutti

VLA/16A-476 Constraining the environment and relativistic jets in the nearby SLSN Gaia16apd 05/26/2016 3.0

6

Sarah Spolaor

VLA/16A-475 The birth of a post-merger AGN 05/24/2016 0.5

6

John Pineda

VLA/16A-466 TRAPPIST-1: the Key
to Unlocking the Mystery of Brown Dwarf Aurorae?
05/10/2016 2.0

6

Peter Williams

VLA/16A-463 VLA Confirmation of  Ultra-Fast Rotation in a T-dwarf 05/03/2016 3.0

6

Dale Frail

VLA/16A-460 Pulsar Candidates Toward Fermi Unassociated Sources 4/25/2016 5.5

6

Chatterjee

VLA/16A-459 Further Localizing the Unique Repeating Fast Radio Burst FRB 121102 4/21/2016 40

6

Lucy

VLA/16A-448 Catching the radio jet from the 26th anniversary outburst of MWC 560 3/21/2016 6

6

Margutti

VLA/16A-447 Probing the sub-parsec environment of the Type Ib SN2016bau 3/28/2016 11

6

Perez-Torres

VLA/16A-444 Catching a Changing Look Quasar Retreating to the Shadows for the Second Time 3/16/2016 2.6

6

Kilpatrick

VLA/16A-439 Observing the Resurgence of SN 2005ip with the VLA 3/8/2016 3.0

6

Tingay

VLBA/16A-435 The nature of the long-term radio emission associated with FRB 150418 3/2/2016 6.00 6

Ravi

VLA/16A-432 A Fast Radio Burst
Afterglow, or a Flaring AGN?
3/1/2016 3.46 6
Williams VLA/16A-431 Extragalactic Fast
Radio Burst 150418: Not So Fast?
2/15/2016 5.0 6
Burgasser VLA/16A-429 A Search for Radio
Emission from a Terrestrial-Planet-Hosting Ultracool Dwarf
2/25/2016 3.0 6
Sivakoff VLA/16A-428 Does GRS 1736-297
contain a Neutron Star or a Black Hole?
2/24/2016 0.75 6
Bower VLA/16A-426 Radio Follow-Up of
a Galactic Center X-Ray Transient
2/23/2016 2.0 6
Cesaroni VLA/16A-424 Monitoring the First
Ever Detected Burst in a High-Mass YSO
2/23/2016 10.4 6
Herrero-Illana VLA/16A-423 HI Distribution
and Kinematics of the Most Active Local Compact Group
2/23/2016 2.5 6
Horesh VLA/16A-422 Late-Time Radio
Observations of a Tidal Disruption Event
2/22/2016 12.0 6
Irwin VLA/16A-420 Post-Outburst Observations of two Tidal Disruption Events to be concurrent with SWIFT 2/17/2016 10.0 6
Yusef-Zadeh VLA/16A-419 Monitoring of Sgr A* coordinated with Spitzer & Chandra Space Observatories 6/23/2016 14.0 6
Bhandari VLA/16A-416 Localizing Counterparts of Fast Radio Bursts 2/10/2016 9.0 6
Cannon VLA/15B-388 AGC198691: The Most Metal-Deficient Galaxy Known 12/23/2015 6.0 6
Spolaor VLA/15B-384 Seeking a Radio FRB Counterpart 12/09/2015 12.25 6
Berger VLA/15B-381 Exploratory Radio Observations of the Nearby Superluminous
Supernova PS15ae
11/30/2015 1.5 6
Chatterjee VLA/15B-378 Localizing the Unique Repeating Fast Radio Burst FRB 121102 11/16/2015 10 6
Pavesi VLA/15B-370 Confirmation of Formaldehyde Absorption against the CMB
at z~1
10/16/2015 3.1 6
Jose-Francisco Gomez VLA/15B-366 Confirmation of Maser Emission in a First Hydrostatic Core 10/09/2015 1.0 6
Kunal Mooley VLA/15B-364 VLA and VLBA Observations of an Unusual Radio Transient 09/30/2015 1.5 6
Macias VLA/15B-352 Evidence of Photoevaporation in the Transitional Disk of GM Aur 09/04/2015 5 6
Assaf Horesh VLA/15B-345 A Peculiar Type Ib Supernova - A Search for the SN-GRB connection 08/18/2015 8.0 6
Henrik Spoon VLA/15B-344 Testing the VLA as a Molecular Outflow Machine 08/18/2015 1.5 6
Justin Linford VLA/15B-343 Supplemental Request for 13B-057: Tempests, Not Bombs 08/18/2015 14.5 6
Gregory Sivakoff VLA/15B-342 Compact Jet Evolution in the Black Hole X-Ray Binary V4641 Sgr 08/11/2015 7 6
Karishma Bansai VLA/15B-340 Fringe Test between LWA1 and VLA-Y1 08/07/2015 1.0 6
Thomas Russell VLA/15B-339 The Radio/X-Ray Decay of the Accreting Millisecond Pulsar IGR J00291+5934 08/07/2015 3.0 6
Gregory Sivakoff VLA/15A-509 The Broad-Band SED of the 2015 Outburst of V404 Cyg as it Fades to Quiescence 07/06/2015 3.0 6
Eileen Meyer VLA/15A-507 High-Resolution Imaging of the Ongoing Internal Shock Collision in 3C 264 06/30/2015 0.67 6
Gregory Sivakoff VLA/15A-504 The 2015 Outburst of V404 Cyg: a unique opportunity to probe jet physics 06/19/2015 4 6
Franceso Costagliola VLA/15A-501 From nascent starburst to hidden AGN : The radio continuum of NGC 1377 06/11/2015 2.75 6
Assaf Horesh VLA/15A-500 Searching for the power source of the ~ 250 days old supernova, iPTF14hls 06/08/2015 8 6
Ylva Pihlstrom VLA/15A-497 Estimating Positional Offsets between IR and Radio Data 06/08/2015 1.25 6
Ran Wang VLA/15A-494 Radio Continuum Emission from the Most Massive Quasar at the Reionization Era 06/01/2015 3 6
Jay Strader VLA/15A-491 Radio Continuum Emission from a Candidate Transitional Millisecond Pulsar 06/14/2015 4 6
Atish Kamble VLA/15A-490 Mapping the final evolutionary stages of SNhunt275

05/28/2015

10 6
Jose Guirado VLA/15A-487 Extrasolar planet radio emission: the nearby planetary system VHS1256-1257 05/12/2015 2 6
Amruta Jaodand VLA/15A-484 3FGL J1544.6-1125: Catching the newest transitional millisecond pulsar in action 05/08/2015 4 6
Charles Hull VLA/15A-482 Synchrotron Emission from Star-forming H-alpha filaments around NGC 1275 05/04/2015 4 6
Anthony Rushton VLA/15A-481 Searching for the jet in an unusual low-luminosity XRB soft-state 05/01/2015 2 6
Santiago del Palacio VLA/15A-480 Is the Emission from the Wind-Collision Region of WR146 Polarized? 04/30/2015 1 6
Rick Perley VLA/15A-478

High Fidelity Imaging Studies - the Quest for 10 million:1!

04/24/2015 8 6
Ian Heywood VLA/15A-477 Completing the deep VLA-VIDEO survey over XMM-LSS 04/21/2015 1.5 6
Edo Berger VLA/15A-476

Monitoring Radio Emission from the 1st Optical TDE with a Relativistic Outflow

04/16/2015 10.0 6
Claire Murray VLA/15A-473 Completing 21-SPONGE 04/08/2015 22.0 6
John Cannon VLA/15A-472

An Extremely Rare Low-Mass Galaxy Interaction

04/06/2015 6.0 6
Miguel Perez-Torres VLA/15A-471 Radio Detection of two Dust-Enshrouded Supernovae in Two Nearby LIRGs 04/01/2015 1.33 6
Preeti Kharb VLA/15A-468 Looking for a Large Jet from a Double-peaked AGN inside a Spiral Galaxy 05/27/2015 0.5 6
Frank Schinzel VLA/15A-466 Searching for the 1st Transient Black Hole X-ray Binary in a MW Globular Cluster 03/18/2015 1.0 6
Sarah Burke-Spolaor VLA/15A-461 Monitoring a potential FRB progenitor 02/23/2015 15.0 6
Ashley King VLA/15A-460 Catching GRS 1915+105 in a rare state transition 02/23/2015 2.0 6
Sarah Burke-Spolaor VLA/15A-459 A potential progenitor to FRB150215 02/18/2015 0.5 6
Elizabeth Mills VLA/15A-457 Searching for Hidden Galactic Center OH masers 2/19/2015 2 6
Jason Hessels VLA/15A-455 Testing A Hypothesized Neutron-Star Accretion Regime With 1RXS J180408.9-342058 02/13/2015 6 6
Sarah Burke-Spolaor VLA/14B-514 The Displaced AGN in NGC3115 05/27/2015 2.0 6
Ashley Zauderer

VLA/14B-506

Search for a Relativistic Jet in the Tidal Disruption Event DES14C1kia 01/06/2015 12.5 6
Hales, Chris VLA/14B-503 Distinguishing Between Interplanetary and Ionospheric Scintillation 12/26/2014 1 6
Callingham,
Joseph
VLA/14B-498 Constraining source spectra to produce an all-sky low-frequency flux scale 12/19/2014 4 6
Ivison, Rob VLA/14B-497 The most distant dusty starburst: 13 Gyr or bust 12/16/2014 6 6
Burgasser, Adam VLA/14B-494 Coordinating VLA and Chandra Observations of 2MASS 1315-2649AB 12/09/2014 1.5

6

Zauderer,
Bevin
VLA/14B-493 Radio Followup of potential Super-Eddington TDE Candidate ASASSN-14li 12/5/2014 8 6
Corsi,
Alessandra
VLA/14B-490 GRB 141121A: An ultra-long GRB with a reverse shock? 12/3/2014 12.5 0
Laskar, Tanmoy VLA/14B-489 Radio followup of the unusual GRB 141121A 12/3/2014 6 0
Henning, Thomas
VLA/14B-487 Intriguing fine structure of the HLTau disk: high-fidelity imaging with the JVLA 11/26/2014 38 0
Carrasco-Gonzalez, Carlos
VLA/14B-485 Planet Formation in HL Tau? 11/26/2014 6.5 0
Mirabel, Felix VLA/14B-482 A RUNAWAY STAR-FORMING REGION TRIGGERED BY MICROQUASAR JETS 11/12/2014 1 6
Arcavi, Iair VLA/14B-479 What is Powering SN 2011dh at Late Times? A VLA Investigation 10/10/2014 1 6
Middleton, Matthew VLA/14B-478 Searching for correlations between inflow and jet in the outburst of H1743-322 9/23/2014 2 6
Yu, Wenfei VLA/14B-477 EVLA observation of H 1743-322 in outburst towards its hard-to-soft transition 9/23/2014 2 6
Tendulkar, Shriharsh VLA/14B-476 NuSTAR/JVLA ToO observations of the hard-state of stellar blackhole H1743-322 9/19/2014 0.67 6
Borthakur, Sanchayeeta
VLA/14A-561 Mapping Faint HI Around a Rare UV-selected DLA in Low-z Galaxy-Groups 7/11/2014 4 6
Chen, Xi VLA/14A-559 Confirming the first detection of a methanol megamaser in Arp 220 7/7/2014 2 6

Bietenholz,
Michael

VLA/14A-558 Two Optically Faint Nearby Supernovae of Type IIP - Possibly Radio Bright? 6/23/2014 0.5 6
Pesce, Dominic VLA/14A-556 Concurrent 22 GHz observations of sub-mm H2O megamasers in AGN accretion disks 6/20/2014 3 6
Gelfand, Joseph VLA/14A-547 Ejection of Material from the Galactic Center Magnetar? 5/6/2014 1.75 6
Ott, Juergen VLA/14A-542 Where do the Nuclear H2O masers in Centaurus A Originate? 4/24/2014 4 6
Williams, Peter VLA/14A-541 Simultaneous Spitzer, Kepler, and VLA Observations of a Nearby L8 Dwarf 4/24/2014 1.5 6
Corbel, Stephane VLA/14A-537 The outburst decay of the black hole X-ray binary Swift J1753.5-0127 4/2/2014 2 6
Sakamoto, Kazushi VLA/14A-535 Radio Jets in NGC 3256 4/1/2014 2.5 6
Arcavi, Iair VLA/14A-534 Constraining the Nature of Three Nearby TDE Candidates 3/28/2014 3 6
Kamble, Atish VLA/14A-531 A Young Type Ic Supernova with very Broad-lines at 25 Mpc 3/22/2014 6 6
O'Dea, Christopher VLA/14A-527 Critical constraints on a unique 30 kpc "beads on a string" star formation 3/2/2014 6 6
Pihlstrom, Ylva VLA/14A-525 VLBA 43 GHz Calibrator Search Using the VLA 2/12/2014 6 6
Geach, Jim VLA/13B-458 Searching for water maser emission from a gravitationally lensed AGN 1/29/2014 2.75 6
Chomiuk, Laura VLA/13B-454 Radio Observations of the Young Type Ia Supernova in M82 1/24/2014 5 Waived

Wootten, Al

VLA/13B-448 Build-up of protoplanetary core-accretion in the dust trap of HD 142527 12/16/2013 3 6
Horesh, Assaf VLA/13B-447 Radio Observation of iPTF13dqy - A Probe of Pre-explosion Massive Star Evolution 12/11/2013 3 6
Deller, Adam VLA/13B-445 Characterizing the compact jet in the J1023+0038 pulsar/X-ray binary system 12/3/2013 12.5 6
Deller, Adam VLA/13B-439 Investigating the accretion state of the "missing link" pulsar J1023+0038 11/7/2013 3 6
Horesh,
Assaf
VLA/13B-435 VLA Observations of a Newly Discovered Swift Tidal Disruption Event Candidate 9/26/2013 10 6
Dickman, Robert VLA/13B-419 The Red Sirius Problem: A Proposed VLA Search for a Sirius B Remnant Shell 9/9/2013 10 6
Law, Casey VLA/13B-409 Interferometric Localization of Cosmological Millisecond Transients 9/9/2013 76
van Dishoeck, Ewine VLA/13B-401 A gigantic dust trap in IRS 48: locating the largest grains 9/3/2013 7.5 6

Sjouwerman, Lorant

VLA/13B-400 Reconfirmation of the methanol maser in M31 for VLBI measurements 8/29/2013 4 6

Powell, Diana

VLA/13B-399 Detailed Magnetic Field Mapping of 3C 58 8/27/2013 8 6

Rujopakarn, Wiphu

VLA/13B-397 Augmenting an Ultradeep, High-resolution Galaxies
Survey with Compact Baselines
8/21/2013 4 6
Archibald, Anne GBT/13B-396 Sudden disappearance of a millisecond pulsar 8/5/2013 5 12
Neff, Susan VLA/13A-544 Exploratory Wideband 327MHz Observations of Centaurus A 7/31/2013 10 6
Berger, Edo VLA/13A-541 New Insights on Gamma-Ray Bursts with the JVLA - Extension of 13A-046 7/19/2013 15 6
Cenko, Brad VLBA/13A-539 Resolving the relativistic outflow from the nearby GRB 130702A 7/10/2013 12 6
Duffin, Ryan VLA/13A-538 Double-Lobed Radio Source Hosted by a Grand Design Spiral 7/10/2013 1 6