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Australian educational space activities

Van Truong, Toan
Fonte: Universidade Nacional da Austrália Publicador: Universidade Nacional da Austrália
Tipo: Relatório
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In the light of the new development for a regulatory regime for scientific and educational space activities by Space Licensing and Safety Office (SLASO), this project was established to assess the background, status and prospect of the current Australian educational space activities that might require authorisation under the Space Activities Act 1998. The project investigated the appropriateness of the regime as well as any problems or issues that educational space activities might face when applying for approvals. The current educational space activities that might require authorisation and that is fit in the scope of this project were: Mars Gravity Biosatellite and Hyshot Program (both from University of Queensland), JAESAT (Queensland University of Technology), BLUESAT (University of New South Wales) and the Spiders in Space Program (Glen Waverley Secondary College, Royal Melbourne Institute of Technology, and Melbourne Zoo). The Spiders in Space Program (an initiative of Spacehab) which was developed to experiment the spiders spinning webs on board the Columbia space shuttle had finished off its activities following the explosion of the space shuttle. There was no desirable data obtained. It was interesting to find out that the collaboration project between Glen Waverley Secondary School...

The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Overview and Early Data

Dawson, Kyle S.; Kneib, Jean-Paul; Percival, Will J.; Alam, Shadab; Albareti, Franco D.; Anderson, Scott F.; Armengaud, Eric; Aubourg, Eric; Bailey, Stephen; Bautista, Julian E.; Berlind, Andreas A.; Bershady, Matthew A.; Beutler, Florian; Bizyaev, Dmitry
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 18/08/2015
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The Extended Baryon Oscillation Spectroscopic Survey (eBOSS) will conduct novel cosmological observations using the BOSS spectrograph at Apache Point Observatory. Observations will be simultaneous with the Time Domain Spectroscopic Survey (TDSS) designed for variability studies and the Spectroscopic Identification of eROSITA Sources (SPIDERS) program designed for studies of X-ray sources. eBOSS will use four different tracers to measure the distance-redshift relation with baryon acoustic oscillations (BAO) in the clustering of matter. Using more than 250,000 new, spectroscopically confirmed luminous red galaxies at a median redshift z=0.72, we project that eBOSS will yield measurements of $d_A(z)$ to an accuracy of 1.2% and measurements of H(z) to 2.1% when combined with the z>0.6 sample of BOSS galaxies. With ~195,000 new emission line galaxy redshifts, we expect BAO measurements of $d_A(z)$ to an accuracy of 3.1% and H(z) to 4.7% at an effective redshift of z= 0.87. A sample of more than 500,000 spectroscopically-confirmed quasars will provide the first BAO distance measurements over the redshift range 0.9