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Welcome to SKA-Japan Workshop 2010

Welcome to SKA-Japan Workshop 2010. Many thanks to NAOJ and the Foundation of Promotion of Astronomy for financial support. SKA ( S quare K ilometer A rray) Big Project in the Next Decades. Freq. range ： 0.07 － 10GHz (25GHz) Antenna ： Aperture Array, Dishes (2000-3000 )

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Welcome to SKA-Japan Workshop 2010

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  1. Welcome to SKA-Japan Workshop 2010 Many thanks to NAOJ and the Foundation of Promotion of Astronomy for financial support

  2. SKA (Square Kilometer Array) Big Project in the Next Decades • Freq. range：0.07－10GHz (25GHz) • Antenna：Aperture Array, Dishes (2000-3000 ) • Site: Australia or South Africa • Characteristics • High sensitivity, Wide-band, • Wide field, High resolution

  3. Japan SKA consortium • ＳＷＧ • Magnetic field • AGN • High-z galaxy • Pulsar • Astrometry • Astro-chemistry 10xBandwidth ＋spectral fitting ⇒3x Increase in Dyncamic range • Establishment：May 2008 • Member：86 individuals from 26inst. • Organizers： H. Nakanishi（Kagoshima uni. ; chair) Y. Hagiwara (NAOJ) O. Kameya (NAOJ) • Aim： To promote Japanese researchers to be involved into the international SKA project • Activities： • Sharing informations via ML • Monthly telecon • Science Working group (SWG), Engineering Working Group(EWG) • Discussion on collaboration with Industry • Hosting Workshop • Applying for research budget ⇒ Higher sensitivity 　・Distant faint objectcan be detected 　・Increase of reference source for astrometry Cotton (SKA2009＠Capetown) 3C287 8-50GHz linesurvey towards TMC-1 (Kaifu et al. 2004) Polarization angle over wideband→More accurate rotation AGN CTD93SED (Nagai et al. 2006) Key Word UltraWideband • EWG • Wideband feed • Wideband receiver • Wideband backend Handmade tapered slot antenna （upper） mesurement in the rqdio quiet room（lower）(Kozuma 2010) InP HBT fast 3bitA/D sampler ↑spectra obtained with fast A/D converter NTT Photonics Laboratory • Industry forum • Collaboration ← Spectra obtained with heterodyne receiver（KawaguchiNAOJ, 2008)

  4. SKA Workshop 2008 Date: 1-2 Nov. 2008 Place: NAOJ Mitaka campus Topic: Combination of science and engineering Talks: Science: Cosmology, re-ionization, nearby and distant galaxies, cluster of galaxy, AGN, Magnetic field, Astrometry, SFR, interstellar chemistry, pulsar, transient, solar system Engineering: Homodyne receiver Status of facilities related to low frequency (Previous workshops were held in 2004 and 2006. Only science was focused on. )

  5. Topics: • Revealing the Universe with • Wide-band cm-Wavelength • Observation • Aim: • To understand the current • status of international SKA • project • To form more international • networks • Key science and engineering • for Japanese community • What contribution we can do • Next step

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