Download
chris salter naic arecibo observatory n.
Skip this Video
Loading SlideShow in 5 Seconds..
Radio Astronomy -- Other Than ALFA Surveys PowerPoint Presentation
Download Presentation
Radio Astronomy -- Other Than ALFA Surveys

Radio Astronomy -- Other Than ALFA Surveys

151 Views Download Presentation
Download Presentation

Radio Astronomy -- Other Than ALFA Surveys

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Chris Salter (NAIC/Arecibo Observatory)‏ Radio Astronomy -- Other Than ALFA Surveys AVC Meeting · February 19-21, 2007

  2. AVC Meeting · February 19-21, 2007 The Rules of the Game • Pre-Nov 2006: -- 50% of R.A. telescope time for non ALFA- survey astronomy (~2400 hr per yr). -- Rx available: 327, 430 & 610 MHz; LBW, SBW, SBH, CB, CBH & XB. • Post-Nov 2006: -- 20% of R.A. telescope time for non ALFA- survey astronomy (~750 hr per yr). -- Rx available: 327 & 430 MHz; LBW, CB & XB; (SBW, SBH & CBH on “campaign” basis).

  3. AVC Meeting · February 19-21, 2007 Pulsar Studies: I

  4. AVC Meeting · February 19-21, 2007 Continuum Studies Kronberg et al. discovered faint, diffuse continuum structure in the the Coma Cluster field by combining DRAO Interferometer and Arecibo 400-MHz data. They have now observed an 8º  8º region in the P-P supercluster to examine the nature of the low-level emission. The new images (made as 4 sub-fields) are of superb quality, and will now be CLEANed and combined with DRAO data.

  5. AVC Meeting · February 19-21, 2007 Spectral-Line Studies: I

  6. AVC Meeting · February 19-21, 2007 Spectral-Line Studies: II

  7. AVC Meeting · February 19-21, 2007 Molecular Line Studies: IRAS 18566+0408 • No. of Galactic H2CO masers = 7 • A recent Arecibo H2CO survey of low-mass star forming regions showed these masers are exclusively associated with high-mass star formation. ` • The H2CO maser in IRAS 18566+0408 was discovered at Arecibo in 2002. • Three short-term H2CO flares (<3 months) have been observed to date via systematic Arecibo monitoring. • The flare amplitudes appear to be linearly decreasing. • The outbursts appear periodic (P ~ 8 months)‏ • The next flare is predicted to occur in Apr 08, and will be looked for. • The H2CO flares are time-correlated with 6.67-GHz CH3OH flares. Most of these are delayed by a month, but one is prompt. • High resolution follow-up with the EVLA and MERLIN is planned to investigate the phenomenon in detail.

  8. AVC Meeting · February 19-21, 2007 Pulsar Studies: I (Cont)‏

  9. AVC Meeting · February 19-21, 2007 Pulsar Studies: II

  10. AVC Meeting · February 19-21, 2007 Pulsar Studies: III

  11. AVC Meeting · February 19-21, 2007

  12. AVC Meeting · February 19-21, 2007

  13. AVC Meeting · February 19-21, 2007 Pulsar Studies: IV