VLBA Rapid Response Proposals

The list below does not include observations of Known Transient Phenomena, which proceed through the normal NRAO proposal process and are triggered by criteria defined in the original proposal.

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CODE P.I. TITLE TYPE OBS. DATE PROPRIETARY? PUBLIC INFO BB337  G. Bower Proper Motion of the Galactic Center Soft Gamma-Ray Repeater 1745-29 ToO 2013 July 17 6 months View BW106  C. Walker Time Dependence of Distortions of the M87 Jet Exp 2013 June 13 6 months View BH194  A. Horesh VLBA Observations of a Recent Tidal-Disruption-Event candiate Exp 2013 May 30 6 months View BN048  K. Niinuma Dense follow-up of giant Ge V flare from Mrk 421 with multi-frequency astrometry ToO 2013 May 22 6 months View BB336  G. Bower Proper Motion of the Galactic Center Soft Gamma Ray Repeater ToO 2013 May 10 6 months View BR188  B. Rani ToO VLBI observations to trace BL LAC during decay phase of historic outburst ToO 2013 May 13 6 months View BR176  B. Rani  ToO observations of BL Lacertae to follo wthe ongoing historic outburst ToO 2013 Feb 18 6 months View BR178  S. Ransom Rapid Astrometry of a Millisecond Pulsar in Stellar Triple System Exp 2013 Feb 13 6 months View BR175  J. Richards Follow-up of exceptional radio and GeV/Tev gamma-ray flares in blazar Mrk 421 ToO 2012 Oct 12 6 months View BM385  A. Mioduszewski Imaging the shock in Gamma Ray Nova Mon 2012 ToO 2012 Oct 3 6 months View BC214  T. Cheung Radio Imaging of a Gravitationally Lens Blazar after Gamma-ray Outbursts ToO 2012 Oct 5 6 months View BK175  N. Kanekar The covering factor of two high-redshift damped Lyman-alpha systems ToO 2012 June 6 6 months View BC207  P. Castangia The Nature of the water maser in the obscured nucleus of the Sy2 IRAS15480-0344 ToO 2012 June 2 6 months View BE61  A. Eckart Coordinated observations of SgrA*: Triggering 43 GHZ phase referencing ToO 2012 May 16 6 months View BO42  M. Orienti The radio emission of the gamma-ray flaring FSRQ at highest redshift ToO 2012 May 22 6 months View BO41  J. Ott Nature of a newly detected water maser in the core of Centaurus A Exp 2012 May 7 6 months View BM371  M. Middleton Resolving the nature of the only ULX jet detected in the radio band ToO 2012 Mar  12 6 months View BM370  S. Markoff Triggering VLBA on SGR A* Flares: The Search for Variable Structure ToO 2012 Mar  12 6 months View BK174  N. Kanekar The covering factor of a damped lyman-alpha system at z=0.6039 ToO 2011 Dec 27 6 months View BX6  D. Xu Revealing the Structure of a Gamma-Ray Burst Next Door: GRB 111005A at 56.6 Mpc ToO 2011 Oct 21 6 months View BS214  S. Spolaor Investigating NGC3393 as the Nearest Active Galactic Nucleus Pair Exp 2011 Oct 15 6 months View BB316  D. Boboltz Multi-wavelength Imaging of the Circumstellar Atmosphere of Mira (o-Cet) ToO 2011 Sept  27 6 months View BK173  A. King An Extraordinary Flare in the Nearest LINER ToO 2011 Sept 17 6 months View BB306  M. Bietenholz VLBI observations to resolve the ejecta of SN2011dh in M51 ToO 2011 Aug 21 6 months View BC199  S. Cenko Sw J2058+05: A possible Second Relativistic Tidal Disruption Flare ToO 2011 Aug 12 6 months View BB307  M. Beilicke Pinpointing the emission region of a recent VHE gamma-ray flare of BL Lacertae ToO 2011 Jul  6 6 months View BS212  A. Soderberg VLBI observations will reveal the nature of the most GRB 110328A ToO 2011 Jun 10 6 months View BD156  J. Desmurs A full polarization study of SiO masers emission in the Chi Cyg ToO 2011 Jun  11 6 months View BL182 A. Lobanov Deciphering the Crab Nebula: High-resolution imaging of flaring emission ToO 2011 Apr  30 6 months View BS210 A. Soderberg VLBI observations willreveal the nature of  the most peculiar GRB 110328A ToO 2011 Apr  11 6 months View BB304 G. Bower The Peculiar Swift event GRB110328A/ Swift J16449.3+573451 ToO 2011 Apr 1 6 months View BH172 G. Hallinan Simultaneous VLBI and Zeeman Doppler Imaging of Algol's Coronal Loop ToO 2010 Nov 27 6 months View BV70 A. van der Horst VLBA observations of the new hard X-ray transient MAXI J1659-152 ToO 2010 Oct 2,6,14,19 6 months View BM348 W. Majid Fast  transient search pipeline validation with observation of bright pulsars Exp 2010 Aug 10 6 months View BR159 A.Rushton High-resolution observations of Cygnus-X-1 during a state transition ToO 2010 Jul 12 6 months View BM347 A. Moin High Resolution Monitoring of GRB 100418a Exp 2010 Jun 22 6 months View BM346 J. Miller-Jones Constraining the space motion of the strange black hole transient XTE J1752-223 ToO 2010 Jun 17 6 months View BD150 F. Day Determining positions of BP150 VLBA Calibrators Exp 2010 Apr  28 6 months View GB71 A.Brunthaler An intriguing new radio sources in M82:  The first extragalactic micro-quasar? ToO 2010 Apr  20 6 months View BB291 C. Brocksopp Catch the decaying radio core of the new X-ray transient XTE J1752-223 ToO 2010 Apr 25,29 6 months View BV069 W. Vlemmings The SiO masers of the recent nova symbiotic star V407 Cyg ToO 2010 Mar 29 6 months View BK166 E. Koerding Monitoring the likely GeV emitting Nova V407 Cyg ToO 2010 Mar 28 6 months View BJ071  K. Johnson AGn Core Wander and the Stability of the ICRF Exp 2010 Jan 31 6 months View BB290 C. Brocksopp A Major Jet Ejection Event from the X-ray Transient XTE J1752-223? ToO 2010 Jan 18,23,26 6 months View BM317 J. Miller-Jones Exploratory HSA obs. of the X-ray binary SWIFT J173.5-0127 ToO 2010 Feb 6 6 months View BD149 F. Day Identifying suitable calibrators for VLBA astrometry measurements of PPNs Exp 2010 Jan 26 6 months View BM331 J. Miller-Jones An unexpected transition to the soft state in a peculiar X-ray binary ToO 2009 Dec 16,19,22,24 6 months View BR148 A. Rushton June 2009 Cygnus X-1 outburst ToO 2009 June 28 6 months View BB273 M. Bietenholz Resolving a Hypernova Jet in SN 2009bb ToO 2009 June 11, 12 6 months View BB272 A. Brunthaler New radio supernova in M82? ToO 2009 April 30, May 1 6 months View BS193 F. Schinzel Monitoring an imminent flaring event in 3C345 ToO 2009 Feb 19 6 months View BD141 A. Deller Exploratory obs. for a VLBA parallax of binary MSP J1023+0038 Exp 2008 Dec 16 6 months View BB265 A. Brunthaler Calibrator search near water masers in the outer Galaxy Exp 2008 June 23 6 months View BB259 M. Bietenholz Is the transient in NGC2770 a relativistic SN explosion? ToO 2008 May 21 6 months View BM283 E. Momjian 1.4 GHz VLBA Imaging of M104's Nucleus Exp 2008 April 26 6 months View BK151 Y. Kovalev Exploratory follow up on a serendipitous discovery of a lens candidate Exp 2008 April 7 6 months View BM282 J.M. Marcaide ToO Obs. of SN2008ax at 1.3 cm ToO 2008 April 4 6 months View BS181 A. Soderberg Is the transient in NGC2770 a relativistic SN explosion? ToO 2008 February 8 6 months View BS179 T. Savolainen Polarimetric ToO Obs. of 3C454.3 ToO 2007 October 6 6 months View GK39 M. Kadler 3C111 in Outburst ToO 2007 November 6 months View GP44 Z. Paragi Misaligned Relativistic Jet in SN 2007gr? ToO 2007 October 6 months View BL157 L. Loinard Accurate distance to the Orion Trapezium Exp 2007 September 9 6 months View BK141 Q. Konopacky Towards a 1% mass determination for binary brown dwarf 2MASS07464+20 Exp 2007 August 11,19 6 months View BD125 R. Dodson Frequency Phase Transfer Astrometry to align AGB-star maser images ToO 2007 June 28 6 months View BE51 A. Eckart Probing for the Intermediate Mass Black Hole IRS13E in the GC stellar cluster ToO 2007 May 6 months View BB243 G. Black Interferometric radar observations of Asteroid 2006 VV2 ToO 2007 April 1 6 months View BB247 M. Busch Radar interferometric imaging of near-earth Asteroid 2006 VV2 ToO 2007 March 30, April 1 6 months View BB248 J. Braatz Megamaser cosmology project ToO 2007 March 9, 10 6 months View BS174 J. Sokoloski High spatial resolution monitoring of 2007 outburst of the jet-producing white dwarf in CH Cygni ToO 2007 March 3 6 months View BD123 R. Dodson Frequency Phase Transfer Astrometry for mm-VLBI Exp 2007 Feb. 3 6 months View BP138 L. Petrov Measurement of the post-seismic displacement of MK-VLBA caused by the Hawaii earthquake on 2006.10.15 ToO 2006 Nov 8-9 6 months View BP136 M. Perez-Torres VLBA Imaging of gamma ray binary LSI+61o303 Exp 2006 Oct 26-27 6 months View BE49 R. Edmonds 43 GHz VLBA positions for Si0-13 and SiO-23 Exp 2006 August 12 6 months View BH142 D. Helfand First Magnetar Proper Motion from Transient AXP XTE J1810-197 ToO 2006 June 2 6 months View BR122 E. Ros Catching the flare in CTA 102 ToO 2006 April 14 6 months View BO27 T.J. O'Brien Monitoring the expanding radio remnant of RS Oph ToO 2006 April 25 6 months View BR119 E. Ros Catching the Flare in CTA 102 ToO 2006 March 6, 7 6 months View BS167 J. Sokoloski Expanding shell and Jet of RS Oph ToO 2006 March 5, 11 6 months View BM249 J.C. Miller-Jones Following the transient ejecta of GRS1915+105 ToO 2006 March 4 6 months View BO026 T.J. O'Brien Resolving the radio emission from 2006 outburst of recurrent nova RS Ophiuchi ToO 2006 February 6 6 months View BP129 R. Parra Confirmation and follow up of new bright radio supernova in the ULIRG Arp 220 ToO 2006 January 9 6 months View BD115 R. Dodson Frequency Phase Transfer Astrometry to align AGB star maser images ToO 2006 January 7 6 months View BE46 P.G. Edwards Hard X-ray quasar J0746+2549 obs. ToO 2005 November 3 6 months View BC156 M. Claussen VLBA Obs. of Sio masers in V838 Monocerotis Exp 2005 October 6, 18 6 months View BK126 C. Kouveliotou Searching for compact structure in flaring magnetar SGR1806-20 ToO 2005 February 26 6 months View BD107 V. Dhawan VLBA Astronomety of X-ray binaries ToO 2005 January 17 6 months View BK122 C. Kouveliotou 3rd epoch VLBA-GBT obs. of SGR 1806-20 following a giant flare ToO 2005 January 10 (as segment C of BK121) 6 months View BK121 C. Kouveliotou Multi-epoch VLBA observations of SGR 1806-20 following a giant X-ray flare ToO 2005 January 5, 6 6 months View BJ058 D. Jauncey Measure the scattered size of the remarkable scintillator PKS 0405-385 in order to determine the distance to the scattering screen ToO 2004 November 17 6 months View BB207 G. Bower An X-ray/radio transient 2.5" from Sgr A* ToO 2004 October 20 6 months View BR103 J.D. Romney Spacecraft navigation observations of the Cassini Spacecraft during a flyby of Iapetus ToO 2004 October 14,16,17,19,20 6 months View BU29 G. Umana VLA+VLBA obs. of HR1099 during a radio burst ToO 2004 September 26 6 months View BM213 E. Momjian Possible phase calibrator for L-band Arp 220 obs. Exp TBD 6 months View BR94 M. Rupen ToO Observations of possible micro-quasar J1628-4152 ToO 2004 March 3 6 months View BR93 L. Greenhill Exploratory imaging of Q0906+6930 Exp Dynamic Queue 6 months View BW74 J. Wrobel Calibrator Search in the SIRTF First-Look Survey Exp TBD 6 months View BT72 S. Thorsett VLBA Parallax obs. of a merging binary pulsar Exp TBD 6 months View

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