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ARECIBO ASTRONOMY SURVEYS

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Presentation on theme: "ARECIBO ASTRONOMY SURVEYS"— Presentation transcript:

1 ARECIBO ASTRONOMY SURVEYS
Murray Lewis Head Radio Astronomy Group 11 September NSF

2 Across whole Arecibo pgm.
Mass-range investigated dynamically ~56 orders of magnitude Micro-meteorites -- asteroids -- neutron stars galaxy clusters Time duration: ∆t > 23 orders of magnitude Crab giant pulses 10-9 sec; Galaxy Evoln. > 109 yr Magnetic field: B > 20 orders of magnitude Mercury null; ISM; to Magnetars > 10^13 gauss 11 September NSF

3 Traditional Arecibo topics
Pulsars -- (pALFA), timing MSP 21 cm HI Extra-galactic {alfalfa, AGES, (AUDS), ([ZoA]) } Galactic {Disk-Halo, (I-gALFA), [TOGS,TOGS2,GALFACTS2]} OTHER Magnetic Fields {(GALFACTS), (ULIRGs) } VLBI Multi-UGC, CGCG, SDSS, IRAS, 2MASS, (GLAST)} Molecular-line {Arp 220, ULIRGs} 11 September NSF

4 Pulsars Discovery -- (pALFA)
timing, MSP timing, gravitational-waveenergy density timing noise investigations high-time resolution studies tests of general relativity physics of extreme environments (B, Eqn. State) ISM studies (using pulsars as probes of ISM, etc) precision astrometry (parallaxes, proper motions, etc) pulsar time scales (inertial & dynamical) 11 September NSF

5 ALFA: A Camera for Arecibo
Installed 2004 Apr Surveys initiated Feb 2005 7 beams x 2 pol (linear) = 14 “pixels” MHz full range Unmatched sensitivity (SEFD = 2.4 to 3 Jy) 3.3’ x 3.8’ beams on 11’ X 13’ ellipse Unprecedented capability for mapping the sky Survey consortia self-organized by community 2004 11 September NSF

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8 2.15 msec 95 d orbit e 1.74±0.04 Mo J 11 September NSF

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11 Traditional Arecibo topics
Pulsars -- (pALFA), timing MSP 21 cm HI Extra-galactic {alfalfa, AGES, (AUDS), ([ZoA]) } Galactic {Disk-Halo, (I-gALFA), [TOGS,TOGS2,GALFACTS2]} OTHER Magnetic Fields {(GALFACTS), (ULIRGs) } 11 September NSF

12 BTF from Resolved Rotation Curves
stars HI H HI r, kpc 10 30 50 100 200 300 V, km/s Vrot h d HI b KS 2005 NRAO/AUI and NOAO/AURA/NSF Rector et al. Need aperture synthesis HI maps - limits sample sizes 11 September NSF

13 The Baryonic Tully-Fisher Relation
Stellar TF BTF 1011 H K’ I B 1011 M* Md (Mo) (Mo) 109 109 (colors) 107 107 McGaugh et al 2000 30 100 300 30 100 300 Vrot (km/s) Vrot (km/s) Philosophy Coverage over Completeness 11 September NSF

14 Arecibo as an HI telescope
in the coming era of active SKA survey- optimized pathfinders (ASKAP, MSKAP) to be followed by the SKA whence Arecibo? The mid-range SKA is a GHz+ facility This exactly matches Arecibo, so Arecibo’s science is SKA precursor science 11 September NSF

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16 A Pilot Survey of HI in Field Galaxies at z ~ 0
A Pilot Survey of HI in Field Galaxies at z ~ 0.2: Catinella et al ApJL 11 September NSF

17 ~5300 galaxies from alfalfa: RA 7.5 - 16.5 hr, dec 12 - 16°
Text ~5300 galaxies from alfalfa: RA hr, dec ° 11 September NSF

18 ? HIMF Parkes HIPASS survey: Zwaan et al. 2003
Previous surveys have detected few (if any) objects with low HI. At low mass end, HIMF estimates differ by >10X: Rosenberg & Schneider (2000) versus Zwaan et al. (1997) ? Parkes HIPASS survey: Zwaan et al. 2003 11 September NSF

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21 Traditional Arecibo topics
Pulsars -- (pALFA), timing MSP 21 cm HI Extra-galactic {alfalfa, AGES, (AUDS), ([ZoA]) } Galactic {Disk-Halo, (I-gALFA), [TOGS,TOGS2,GALFACTS2]} OTHER Magnetic Fields {(GALFACTS), (ULIRGs) } 11 September NSF

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28 VLBI and Arecibo The impact of Arecibo’s sensitivity
Arecibo added to the VLBA => 4.5 times better sensitivity (Day & Momjian 2005). 11 September NSF

29 VLBI Highlights Post-Painting
MK5A Disk-recorded: Three successful Mk5A disk-based runs using L, C and X-band, with HAS, EVN & Global network. These represent; (1) a study of the Zeeman effect for compact components in ULIRGs, (2) jet and counter-jet emission in the giant radio galaxy, NGC315 and, (3) measuring the expansion velocity of SN2008D associated with the transient X-ray source in NGC2770 (Target of Opportunity). E-VLBI test over the existing OC3 (155Mbps-shared with UPR) line: Arecibo data arriving at JIVE Fringe amplitude for 128 Mbps @128Mbps @64Mbps Jb - Tr Jb - Wb Fringe amplitude for 64Mbps Jb - Tr Jb - Wb Jb - Ar Tr - Wb Jb - Ar Tr - Wb QSO 3C395 Tr - Ar Wb - Ar Tr - Ar Wb - Ar 11 September NSF

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