atuc meeting, 14 oct 2010, astro issues george hobbs
DESCRIPTION
ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs. Introduction. Note: This is based on a presentation prepared by Robert Braun. His original presentation will be made available. Overview of the astrophysics group Science highlights from Parkes, Mopra, Narrabri and ASKAP Other highlights - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56814cd7550346895db9db8b/html5/thumbnails/1.jpg)
ATUC Meeting, 14 Oct 2010, Astro IssuesGeorge Hobbs
![Page 2: ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56814cd7550346895db9db8b/html5/thumbnails/2.jpg)
Introduction
• Note: This is based on a presentation prepared by Robert Braun. His original presentation will be made available.
• Overview of the astrophysics group• Science highlights from Parkes, Mopra, Narrabri and
ASKAP• Other highlights• Notes on the Parkes receiver systems
• See Simon’s talk for science highlights from ASKAP
• (Thanks to Kate, Rob, Jill and Baerbel for helping me prepare this talk)
CSIRO ATUC, Astro Issues
![Page 3: ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56814cd7550346895db9db8b/html5/thumbnails/3.jpg)
The astrophysics group
• Current staff: R. Braun, S. Breen, K. Brooks, S. Brown, J. Caswell, P. Diamond, R. Ekers, B. Emonts, I. Feain, J. Green, L. Harvey-Smith, G. Hobbs, S. Johnston, R. Jurek, M. Keith, B. Koribalski, E. Lenc, R. Manchester, N. McClure-Griffiths, R. Norris, S. O’Sullivan, J.
Rathborne, D. Schnitzeler & J. Urquhart (24)• Welcome to: S. Breen, L. Harvey-Smith and J.
Rathborne• 33 current students• Recent postdoc acceptance: R. Shannon (starting next
week), M. Keith, S. Burke-Spolaor, J. Grant …• 8 postdocs and permanent positions currently being
advertised on the AAS (closing 15th Nov)
CSIRO ATUC, Astro Issues
![Page 4: ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56814cd7550346895db9db8b/html5/thumbnails/4.jpg)
Summary of science highlights
• Detection of CO 2-1 emission at high red-shift• Observation of the Sunyaev-Zel’Dovich effect• Discovery of new pulsars and a magnetar
• Wide-area molecular mapping of NH3 and H2O masers
• Improved determination of the Jovian system mass• Bursting 'bubbles' the origin of galactic gas clouds• Observational limits on UHE neutrinos• Observational limits on gravitational wave sources • First science with an ASKAP antenna• …
• Apologies for all the work carried out by the astrophysics group on Australian and International telescopes that I’ve missed off …
CSIRO ATUC, Astro Issues
![Page 5: ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56814cd7550346895db9db8b/html5/thumbnails/5.jpg)
Science highlights from ATCA
• Detection of CO 2-1 emission (~ 40 GHz) in a z = 4.76 SMG Coppin et al. 2010, MNRAS
CSIRO ATUC, Astro Issues
Lunaska experiment observational limits on UHE neutrinos from Centaurus A and the Galactic Centre James et al. 2010, MNRAS
• High angular resolution of the Sunyaev-Zel’Dovich effect … Massardi et al. 2010
![Page 6: ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56814cd7550346895db9db8b/html5/thumbnails/6.jpg)
Science highlights from Parkes
• Measuring the Mass of Solar System Planets Using Pulsar Timing – Yardley et al. 2010, ApJ
CSIRO ATUC, Astro Issues
• Measuring the Mass of Solar System Planets Using Pulsar Timing - Champion et al. 2010, ApJ
• A radio loud magnetar in X-ray quiescence, Levin et al. 2010, MNRAS
• Bursting bubbles the origin of galactic gas clouds – press release
![Page 7: ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56814cd7550346895db9db8b/html5/thumbnails/7.jpg)
The “Nessie” Nebula:Cluster Formation in a filamentary Infrared Dark Cloud
• Very filamentary infrared dark cloud (aspect ratio 150:1)• Mapped with Mopra: OTF, zoom mode, 16 lines at 90 GHz, 0.11 km s-1
• HNC (1–0) emission • Excellent morphological match to the mid-IR extinction• Same radial velocity Nessie is a single, coherent cloud and not the
chance alignment of multiple unrelated clouds along the line of sight• Multiple dense, compact molecular cores every ~4.5pc • If turbulence pressure dominates, core spacing matches theory (cores can
form within a cylinder at regular intervals via the “sausage” fluid instability)
Jackson, Finn, Chambers, Rathborne, Simon, 2010, ApJL
1.2 degrees
0.2
degs
High-mass star formation arises from the fragmentation of filamentary IRDCs
![Page 8: ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56814cd7550346895db9db8b/html5/thumbnails/8.jpg)
Use of international facilities
CSIRO ATUC, Astro Issues
Astronomers find cause of "dicky tickers"
![Page 9: ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56814cd7550346895db9db8b/html5/thumbnails/9.jpg)
The astrophysics group and outreach activities
CSIRO ATUC, Astro Issues
http://www.globaljetwatch.net: I. Faein and R. Hollow
PULSE@Parkes: G. Hobbs, R. Hollow, J. Khoo, D. Yardley, M.
Mao …
Citizen science projects: R. Norris, R. Hollow …
![Page 10: ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56814cd7550346895db9db8b/html5/thumbnails/10.jpg)
CSIRO ATUC, Astro Issues
CASS Radio Astronomy School 2010
CASS RAS 2010 very successful• Excellent turn-out of 45 students• Very positive feed-back• RAS 2011 in Parkes
![Page 11: ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56814cd7550346895db9db8b/html5/thumbnails/11.jpg)
CSIRO ATUC, Astro Issues
Parkes 50th Anniversary Activities in 2011
• Parkes “Golden Anniversary” Booklet
• On sale at the Visitor Centre from 1 December 2010
• Open Weekend 8 & 9 October 2011
• Possible public concert, etc.
• Dignitary Event on 30 October 2011
• Commemorative monument “unveiling”
• Science Symposium 31 Oct – 3 Nov 2011
• 20% history, 80% science is planned mix
![Page 12: ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56814cd7550346895db9db8b/html5/thumbnails/12.jpg)
CSIRO ATUC, Astro Issues
Parkes FE & BE Systems Rationalisation
• Working group discussions • Carretti, Edwards, Hobbs, Braun
• “Ideal” front-end Suite• Phase-array-feed-low: 700-1800 MHz x 30 beams BW=1GHz
• Wide-band single-pixel feed options:
• 0.7-12 GHz, BW=8GHz
• 0.7-3 & 3-12 GHz, BW=8GHz
• Concentric (0.3-0.7 plus 1.8-5) & (0.7-1.8 plus 5-12 GHz), BW=8GHz
• MB(/PAF-)high: 5-12, 11-26 GHz x 30 beams, BW=8GHz.
• All FE in focus cabin, no more receiver changes
• Consider new FEs and upgrades in this framework
![Page 13: ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56814cd7550346895db9db8b/html5/thumbnails/13.jpg)
CSIRO ATUC, Astro Issues
Parkes FE & BE Systems Rationalisation
• “Ideal” BE • “Single Digital Back-end” fully configurable in software
• Unlikely to be viable in short term
• Short-term BE developments• Decommission BEs superseded by DFB3, DFB4, APSR, BPSR
• WBC, AFB, CPSR2, DFB2, DAS
• Enhanced multi-beam correlator possibilities to replace MBCORR
• BPSR-based (ARC request pending)
• ASKAP board based
![Page 14: ATUC Meeting, 14 Oct 2010, Astro Issues George Hobbs](https://reader034.vdocuments.mx/reader034/viewer/2022051517/56814cd7550346895db9db8b/html5/thumbnails/14.jpg)
Conclusion
• For the “official” slides see Robert’s presentation• ADS search for “Parkes”, “Australia Telescope Compact
Array”, “ATCA”, “Mopra” and “ASKAP” in abstract since April 2010
• Astrogroup members since April 2010: 145 papers with 279 citations: “The First Fermi Large Area Telescope Catalog of
Gamma-ray Pulsars”CSIRO ATUC, Astro Issues
Abstract search phrase Number of papers Total citations
Parkes 36 54
Australia Telescope National Facility
38 30
Mopra 11 9
ASKAP 9 1
(Jodrell Bank) 4 1
(Westerbork) 20 16
(Arecibo) 67 34