welcome to ska-japan workshop 2010
DESCRIPTION
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 ) - PowerPoint PPT PresentationTRANSCRIPT
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 (2000-
3000 ) •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 MLMonthly teleconScience Working group (SWG),
Engineering Working Group (EWG)Discussion on collaboration with IndustryHosting WorkshopApplying 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 WordUltraWideband
3C287
3
AGN CTD93 SED (Nagai et al. 2006)
Industry forum CollaborationIndustry forum Collaboration
SKA Workshop 2008Date: 1-2 Nov. 2008Place: NAOJ Mitaka campusTopic: Combination of science and engineeringTalks: 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. )
Topics:Revealing the Universe withWide-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