The Dark Energy Spectroscopic Instrument
Lead Research Organisation:
UNIVERSITY COLLEGE LONDON
Department Name: Physics and Astronomy
Abstract
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Planned Impact
DESI is a ground-based experiment to study the expansion rate of the universe and the growth of cosmological structure with a wide-angle spectroscopic galaxy and quasar redshift survey. The 5000-fibre DESI spectrograph will allow an order of magnitude improvement in the distance scale over the redshifts 0.8
Organisations
People |
ORCID iD |
| Andrew Doel (Principal Investigator) | |
| Ofer Lahav (Co-Investigator) |
Publications
Silber J
(2022)
The Robotic Multiobject Focal Plane System of the Dark Energy Spectroscopic Instrument (DESI)
in The Astronomical Journal
DESI Collaboration
(2022)
Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument
in The Astronomical Journal
Ding Zhejie
(2022)
The DESI $N$-body Simulation Project II: Suppressing Sample Variance with Fast Simulations
in arXiv e-prints
Ravoux C
(2023)
The Dark Energy Spectroscopic Instrument: one-dimensional power spectrum from first Ly a forest samples with Fast Fourier Transform
in Monthly Notices of the Royal Astronomical Society
Rashkovetskyi M
(2023)
Validation of semi-analytical, semi-empirical covariance matrices for two-point correlation function for early DESI data
in Monthly Notices of the Royal Astronomical Society
Napolitano L
(2023)
Detecting and Characterizing Mg ii Absorption in DESI Survey Validation Quasar Spectra
in The Astronomical Journal
Gordon C
(2023)
3D correlations in the Lyman-a forest from early DESI data
in Journal of Cosmology and Astroparticle Physics
Gao H
(2023)
The DESI One-Percent Survey: Constructing Galaxy-Halo Connections for ELGs and LRGs Using Auto and Cross Correlations
in The Astrophysical Journal
GarcÃa L
(2023)
Analysis of the impact of broad absorption lines on quasar redshift measurements with synthetic observations
in Monthly Notices of the Royal Astronomical Society
Ruggeri R.
(2023)
A data compression and optimal galaxy weights scheme for Dark Energy Spectroscopic Instrument and weak lensing data sets
in Monthly Notices of the Royal Astronomical Society
| Description | We have assembled. aligned and delivered one of the world's largest wide field corrector lens systems to the Mayall telescope in Arizona for the DESI project. The corrector was successfully commissioned in April 2019 and the full DESI instrument was commissioned in 2020/21. The main 5-year science survey was started in May 2021 and by January 2022 had catalogued over 7.5 million galaxy spectra, more than all previous 3D surveys combined. The survey is continuing and is currently on schedule to complete in the 5 year period. |
| Exploitation Route | The DESI corrector is part of the DESI instrument that will be conducting a 5 year cosmological survey. This survey data will be available to the wider astronomical community. |
| Sectors | Other |
| URL | https://www.desi.lbl.gov/ |
| Description | There has been a lot of popular press coverage of the DESI instrument and its initial results. This has included several BBC news items (www.bbc.co.uk/news/science-environment-49774339, www.bbc.co.uk/news/uk-england-tyne-59974215) and newspaper articles (www.thesun.co.uk/tech/22686607/two-millions-galaxies-stars-mapping-universe/) |
| First Year Of Impact | 2019 |
| Impact Types | Cultural |
| Description | BBC news segment |
| Form Of Engagement Activity | A broadcast e.g. TV/radio/film/podcast (other than news/press) |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Public/other audiences |
| Results and Impact | BBC news segment (28 October 2019) on the DESI project. This involved interview with UCL staff. |
| Year(s) Of Engagement Activity | 2019 |
| URL | https://www.bbc.co.uk/news/science-environment-49774339 |
| Description | Talk at Francis Holland School |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Schools |
| Results and Impact | Talk at a Francis Holland girls school lunchtime science lectures. The intention was to interest pupils in the latest astronomical instrumentation systems. About 30 people attended and there were many questions asked. |
| Year(s) Of Engagement Activity | 2023 |
| Description | Talk at Westminster Reference library |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Public/other audiences |
| Results and Impact | Public talk at Westminster Reference library |
| Year(s) Of Engagement Activity | 2019 |
| Description | Talk to Ewell astronomical society |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | Local |
| Primary Audience | Public/other audiences |
| Results and Impact | Talk to Ewell astronomical association. Questions asked after talk by audience members. |
| Year(s) Of Engagement Activity | 2020 |
| Description | Talk to the British Astronomical Association summer meeting |
| Form Of Engagement Activity | A talk or presentation |
| Part Of Official Scheme? | No |
| Geographic Reach | National |
| Primary Audience | Public/other audiences |
| Results and Impact | Invited talk at the British Astronomical Association annual summer meeting. Question session after talk. |
| Year(s) Of Engagement Activity | 2019 |