'1 NATIONAL RADIO0 ASTRONOMY O BSERVAT 0 R Y FOURTH QUARTER REPORT October 1, 1984- December 31, 1984 RADIO ASTRONOMVY 08ER O CHARLOTTESVILLE, VA. JAN 2 8 -9, OBSERVING PROGRAM 140-foot Telescope Hours Scheduled observing 1739.00 Scheduled maintenance and equipment changes 185.25 Scheduled tests and calibration 190.75 Time lost due to: equipment failure 31.50 power 3.25 weather 40.75 interference 0.75 The following continuum programs were conducted during this quarter. No. Observer Program S279 D. Stinebring Observations at 10.65 GHz to search A. Wolszczan (NAIC) for steep spectrum, galactic sources near 1 = 23.5°. U19 J. Uson (Princeton) Continued search at 19.5 GHz for D. Wilkinson (Princeton) small-scale anisotropy of the micro- wave background. U20 J. Uson (Princeton) Observations of the Sunyaev-Zeldovich D. Wilkinson (Princeton) effect at 19.5 GHz. The following line programs were conducted during this quarter. No. Observer Program B428 L. Blitz (Maryland) Observations at 327 MHz to search for L. Armus (Maryland) interstellar deuterium and at 310 MHz V. Escalante-Ramirez (CFA) to search for the deuterated OH T. Hartquist (Maryland) molecule OD. S. Lepp (CFA) T. Hewagama (Maryland) C220 F. Clark (Kentucky) Observations at the 4 mainline fre- S. Miller (Kentucky) quencies of OH emission/absorption A. Bridle in bi-polar flows. H. Martin 13 W. Irvine (Massachusetts) Search at 1.7 cm for interstellar S. Madden (Massachusetts) ethylamine (NH 2 CCH). H. Matthews (Herzberg) D. Swade (Massachusetts) M231 I. Mirabel (Puerto Rico) Observations at 6 and 18 cm of high- L. Rodriguez (Mexico) velocity H2 CO and OH in regions of A. Ruiz (Puerto Rico) star formation. No • Observer Program P128 H. Payne Search at 18 cm for oH in planetary Y. Terzian (Cornell) nebulae. T158 T. Thuan (Virginia) Observations at 21 cm to measure the E. J. Wadiak (Virginia) neutral hydrogen content of active galaxies. W186 T. Wilson (MPIR, Bonn) Observations at 2 cm of H2 densities R. Rood (Virginia) in giant molecular clouds. E. J. Wadiak (Virginia) W188 T. Wilson (MPIR, Bonn) Observations at 2 cm of H2 CO emission R. Rood (Virginia) from giant molecular clouds. E. J. Wadiak (Virginia) W. Batrla The following Very Long Baseline programs were conducted, and the stations used in the observations are coded as follows: A - Arecibo 1000-ft Lm Medicina 32-mrn B - Effelsberg MPIR 100-m N NRL Maryland Point 85-ft C - Algonquin 150-ft 0 Owens Valley 130-ft F -Fort Davis 85-ft R Crimea USSR 30-m G - Green Bank 140-ft Sk Kirunda Sweden 60-ft H - Hat Creek 85-ft Sn Onsala 20-mn I - Iowa 60-ft So Onsala 25-m Jb - Jodrell Bank Mk II T Torun 15-m Jm - Jodrell Bank 120-ft Wn Westerbork n=1-14x26 m Km - Haystack 120-ft Yn Socorro n=1-27x25 m Lb - Bologna 25-mn AV6 W. Alef (MPIR, Bonn) Observations at 6 cm of the milli- E. Preuss (MPIR, Bonn) arcsecond core of 3C 147, with K. Kellermann telescopes B, F, G, Kmn, Lb, 0, and Yn. B55V P. Barthel (Leiden) Survey at 6 cm for compact cores in G. Miley (Leiden) extended quasars, with telescopes B, E. Preuss (MPIR, Bonn) G, Kin, Lm, O, and So. R. Schilizzi (NFRA) B382V L. Baath (Manchester) Monitoring of the 932-MHz redshifted F. Briggs (Pittsburgh) HI absorption line in AO 0235+164, M. Davis (NAIC) with telescopes A, G, Jmn, 0, and Sk. K. Johnston (NRL) D. Jones (Caltech) B. Ronnang (Chalmers) S. Unwin (Caltech) A. Wolfe (Princeton) J. Romney No. Observer Program B385V L. Baath (Manchester) Monitoring of low-frequency variables F. Briggs (Pittsburgh) at 932 MHz, with telescopes A, G, Jm, M. Davis (NAIC) 0, and Sk. K. Johnston (NRL) D. Jones (Caltech) B. Ronnang (Chalmers) S. Unwin (Caltech) A. Wolfe (Pittsburgh) J. Romney C33V M. Claussen (Caltech) Observations at 1.3 cm of the small- M. Heiligman (Caltech) scale structure of the water-vapor K. Lo (Caltech) masers in the nucleus of NGC 4258, M. Schneps (CFA) with telescopes B, G, Kmn, 0, and Yn. M. Reid (CFA) C34V M. Cohen (Caltech) Observations at 1.3 and 2.8 cm of the J. Biretta (Caltech) compact structures in 3C 273, 3C 279, R. Moore (Caltech) and 3C 345, with telescopes B, F, G, A. Readhead (Caltech) H, Kmn, Lm, N, Sn, and Yn. S. Unwin (Caltech) C35V W. Cotton Observations at 18 cm for inverse F. Owen Compton emission, with telescopes B, G, Jm, 0, and Yn. D8V P. Diamond (Chalmers) Observations at 18 cm of the OH maser R. Booth (Chalmers) OH 104.9+2.4, with telescopes B, G, D. Graham (MPIR, Bonn) Jm, O, So, and Wn. R. Norris (Manchester) T. Perry (Manchester) E8V A. Eckart (MPIR, Bonn) Investigation at 18 cm of the milli- K. Johnston (NRL) arcsecond structure of the BL Lac A. Witzel (MPIR, Bonn) object 0716+71, with telescopes B, G, Jm, Km, 0, R, So, T, Wn, and Yn. EIOV A. Eckart (MPIR, Bonn) Observations at 18 cm of OSO 1928+73, p. Biermann (MPIR, Bonn) with telescopes B, G, Jb, Kin, Lm, 0, K. Fricke (MPIR, bonn) So, and Wn. K. Johnston (NRL) C. Schalinski (MPIR, Bonn) A. Witzel (MPIR, Bonn) HI5V D. Hough (Caltech) Observations at 2.8 cm of the central A. Readhead (Caltech) component of the extended quasar 3C 245, with telescopes B, F, G, H, and 0. No. Observer Program H2OIV M. Hodges (Caltech) Observations at 932 MHz of compact doubles, with telescopes G, Jb, and 0. J33V D. Jones (Caltech) Second-epoch observations at 1.3 cm of AO 0235+164, with telescopes B, G,Kin, 0, and Yn. J34V D. Jones (Caltech) Quick-look observations at 6 cm of R. Sramek NGC 3690, with telescopes G, Kin, 0, and Yn. L30V J. Lestrade (JPL) Observations at 6 cm of RS CVn R. Mutel (Iowa) binaries, with telescopes B, G, KI, A. Niell (JPL) 0, and Yn. R. Preston L31V C. Lawrence (Caltech) Survey at 1.3 cm of selected, strong B. Burke (MIT) sources, with telescopes B, C, WKm, 0, R. Booth (Chalmers) Sn, and Yn. R. Linfield (NFRA) D. Payne (JPL) R. Preston (JPL) R. Porcas (MPIR, Bonn) A. Readhead (Caltech) R. Schilizzi (NFRA) M56V R. Mutel (Iowa) Observations at 2.8 cm to monitor M. Hodges (Caltech) the outbursts of BL Lac, with telescopes B, F, G, H, Kin, and 0. M57V F. Mantovani (Bologna) Observations at 18 cm of 3C 99, with I. Browne (Manchester) telescopes B, G, Jm, 0, So, and Wn. A. Ficarra (Bologna) T. Muxlow (Manchester) L. Padrielli (Bologna) J. Romney M58V R. Mutel (Iowa) Observations at 2.8 and 18 cm of T. Muxlow (Jodrell Bank) quasar compact doubles, with tele- R. Phillips (Haystack) scopes B, F, G, H, I, Km, 0, and Yn. M59V J. Moran (CFA) Observations at 6 cm for high- L. Rodriguez (Mexico) brightness temperature, nonthermal emission from early-type stars, with telescopes F, G, O, and Yn. No. Observer Program M61V A. Marscher (Boston) Observations at 1.3 and 2.8 cm of the "naked" core of NRAO 140, with tele- scopes B, F, G, H, Kin, N, O, Sn, and Yn. P58V T. Pearson (Caltech) Second-epoch observations at 6 cm of A. Readhead (Caltech) a complete sample of 20 sources, with telescopes B, G, I, Kin, 0, and Yn. P60V I. Pauliny-Toth (MPIR, Bonn) Continued monitoring at 2.8 cm of R. Porcas (MPIR, Bonn) 3C 454.3, with telescopes B, F, G, H, W. Sheng-Yin (MPIR, Bonn) Kmin,and 0. A. Zensus (MPIR, Bonn) K. Kellermann P61V R. Porcas (MPIR, Bonn) Observations at 2.8 cm of the super- luminal quasar 3C 179, with telescopes B, G, Kin, and 0. P62V G. Pilbratt (Onsala) Observations at 6 cm of structural R. Booth (Onsala) variations in 3C 279, with telescopes G. Nicolson (Hartebeesthoek) B, G, Jb, Kin, Lm, 0, So, T, Wn, and R. Porcas (MPIR, Bonn) Yn. R30V J. Romney Studies at 2.8 cm of the structural W. Alef (MPIR, Bonn) evolution of 3C 84, with telescopes N. Broten (Herzberg) B, F, G, H, Kin, Lm, and 0. I. Pauliny-Toth (MPIR, Bonn) K. Ke l lermann R32V D. Roberts (Brandeis) Polarization-sensitive observations L. Brown (Brandeis) and polarization synthesis observa- B. Burke (MIT) tions of 3C 345 at 2.8 cm, with D. Gabuzda (Brandeis) telescopes B, F, G, Kin, and 0. R. Potash (Interferometrics) A. Rogers (Haystack) J. Wardle (Brandeis) R33V D. Roberts (Brandeis) Observations at 6 cm to survey and L. Brown (Brandeis) monitor selected sources for linear B. Burke (MIT) polarization, with telescopes B, F, D. Gabuzda (Brandeis) G, Kin, 0, and Yn. R. Potash (Interferometrics) A. Rogers (Haystack) J. Wardle (Brandeis) No. Observer Program S40V R. Schilizzi (NFRA) Observations at 6 and 18 cm of R. Hunstead (Sydney) 0215+015, with telescopes B, G, Jb, K. Johnston (NRL) Lm, N, 0, So, Wn, and Yn. R. Laing (RGO) H. Murdoch (Sydney) S41V S. Spangler (Iowa) Observations at 6 and 18 cm to search J. Cordes (Cornell) for cosmic ray induced turbulence D. Morris (Iowa) near supernova remnants, with R. Mutel (Iowa) telescopes B, G, I, Km, 0, and Yn. J. Benson T4V R. Taylor (Toronto) Observations at 6 cm of rapidly E. Seaquist (Toronto) variable radio sources, with telescopes G, F, Kin, O, and Yn. U14V S. Unwin (Caltech) Observations at 1.3 cm of 3C 120, J. Halpern (Caltech) with telescopes B, G, Km, 0, and Yn, K. Pounds (Leicester) simultaneous with X-ray observations.