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

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〜Square Kilometer Array を中心として〜

Presentation transcript:

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

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

Japan SKA consortium 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 ＳＷＧ Magnetic field AGN High-z galaxy Pulsar Astrometry Astro-chemistry ＳＷＧ Magnetic field AGN High-z galaxy Pulsar Astrometry Astro-chemistry EWG Wideband feed Wideband receiver Wideband backend EWG Wideband feed Wideband receiver Wideband backend Handmade tapered slot antenna （ upper ） mesurement in the rqdio quiet room （ lower ） (Kozuma 2010) ↑spectra obtained with fast A/D converter ← Spectra obtained with heterodyne receiver （ Kawaguchi NAOJ, 2008) 8-50GHz linesurvey towards TMC-1 (Kaifu et al. 2004) 10xBandwidth ＋ spectral fitting ⇒ 3x Increase in Dyncamic range ⇒ Higher sensitivity ・ Distant faint object can be detected ・ Increase of reference source for astrometry Cotton (SKA2009 ＠ Capetown) Polarization angle over wideband→More accurate rotation NTT Photonics Laboratory InP HBT fast 3bit A/D sampler Key Word UltraWideband Key Word UltraWideband 3C287 3 AGN CTD93 SED (Nagai et al. 2006) Industry forum Collaboration Industry forum Collaboration

SKA Workshop 2008 Date: 1-2 Nov 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 Only science was focused on. )

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