Dark Energy Survey: Observing Shift at CTIO
Lead Research Organisation:
University of Portsmouth
Department Name: Institute of Cosmology and Gravitation
Abstract
The following is taken from the abstract of the attached observing proposal, which was granted 525 nights of observing time over 5 years on the instrument and telescope detailed within:
"The Nobel Prize in Physics for 2011 was awarded for the discovery of the accelerating expansion of the Universe. The primary scientic objective of the Dark Energy Survey (DES) is to address the question: why is the expansion of the Universe speeding up? Is cosmic acceleration due to dark energy or does it require a modication of General Relativity? If dark energy, is it the energy density of the vacuum (Einstein's cosmological constant) or something else? DES will address these questions by measuring the properties of dark energy with unprecedented precision, using four complementary techniques: galaxy clusters, large-scale galaxy clustering (including baryon acoustic oscillations), weak gravitational lensing, and type Ia supernovae. To achieve the requisite precision, we will conduct two optimally interleaved surveys over 525 nights: a wide-area grizY survey covering 5000 sq. deg. to 24th mag and a deeper time-domain griz survey with 5-day cadence covering 30 sq. deg. In response to an NOAO AO in 2003, the DES collaboration was formed and has built the Dark Energy Camera (DECam), a 570- megapixel, red-sensitive imager with 2.2 degree field of view, five uniform, high-throughput filters, a five-element optical corrector, and a hexapod system for active focus and alignment. We have constructed and will operate a data management system to process and serve DES survey data and a Community Pipeline for NOAO to process community data. The DES data products will provide a rich legacy for the astronomy community, and DECam will be an extraordinary asset as a facility instrument on the Blanco Telescope."
"The Nobel Prize in Physics for 2011 was awarded for the discovery of the accelerating expansion of the Universe. The primary scientic objective of the Dark Energy Survey (DES) is to address the question: why is the expansion of the Universe speeding up? Is cosmic acceleration due to dark energy or does it require a modication of General Relativity? If dark energy, is it the energy density of the vacuum (Einstein's cosmological constant) or something else? DES will address these questions by measuring the properties of dark energy with unprecedented precision, using four complementary techniques: galaxy clusters, large-scale galaxy clustering (including baryon acoustic oscillations), weak gravitational lensing, and type Ia supernovae. To achieve the requisite precision, we will conduct two optimally interleaved surveys over 525 nights: a wide-area grizY survey covering 5000 sq. deg. to 24th mag and a deeper time-domain griz survey with 5-day cadence covering 30 sq. deg. In response to an NOAO AO in 2003, the DES collaboration was formed and has built the Dark Energy Camera (DECam), a 570- megapixel, red-sensitive imager with 2.2 degree field of view, five uniform, high-throughput filters, a five-element optical corrector, and a hexapod system for active focus and alignment. We have constructed and will operate a data management system to process and serve DES survey data and a Community Pipeline for NOAO to process community data. The DES data products will provide a rich legacy for the astronomy community, and DECam will be an extraordinary asset as a facility instrument on the Blanco Telescope."
Publications
Inserra C.
(2020)
First Hubble diagram and cosmological constraints using superluminous supernova
in arXiv e-prints
Abarr Q.
(2020)
The Payload for Ultrahigh Energy Observations (PUEO): A White Paper
in arXiv e-prints
Tucker Douglas
(2021)
SOAR/Goodman Spectroscopic Assessment of Candidate Counterparts of the LIGO--Virgo Event GW190814
in arXiv e-prints
Collaboration D
(2020)
Supernova Neutrino Burst Detection with the Deep Underground Neutrino Experiment
in arXiv e-prints
ANITA Collaboration ANITA
(2020)
Unusual Near-horizon Cosmic-ray-like Events Observed by ANITA-IV
in arXiv e-prints
DUNE Collaboration DUNE
(2021)
Experiment Simulation Configurations Approximating DUNE TDR
in arXiv e-prints
Collaboration N
(2020)
Search for multi-messenger signals in NOvA coincident with LIGO/Virgo detections
in arXiv e-prints
Nadlinger D. P.
(2021)
Device-Independent Quantum Key Distribution
in arXiv e-prints
Acero M. A.
(2021)
Measurement of the Double-Differential Muon-neutrino Charged-Current Inclusive Cross Section in the NOvA Near Detector
in arXiv e-prints
Inserra C
(2018)
Euclid: Superluminous supernovae in the Deep Survey
in Astronomy & Astrophysics
Kim A
(2015)
Distance probes of dark energy
in Astroparticle Physics
Acero M
(2020)
Supernova neutrino detection in NOvA
in Journal of Cosmology and Astroparticle Physics
Abi B
(2020)
Volume I. Introduction to DUNE
in Journal of Instrumentation
Abi B
(2020)
Volume IV. The DUNE far detector single-phase technology
in Journal of Instrumentation
Acciarri R
(2020)
The Liquid Argon In A Testbeam (LArIAT) experiment
in Journal of Instrumentation
Manenti L
(2020)
Performance of different photocathode materials in a liquid argon purity monitor
in Journal of Instrumentation
Manenti L
(2020)
Erratum: Performance of different photocathode materials in a liquid argon purity monitor
in Journal of Instrumentation
Abi B
(2020)
First results on ProtoDUNE-SP liquid argon time projection chamber performance from a beam test at the CERN Neutrino Platform
in Journal of Instrumentation
Abi B
(2020)
Volume III. DUNE far detector technical coordination
in Journal of Instrumentation
Luque E
(2018)
Deep SOAR follow-up photometry of two Milky Way outer-halo companions discovered with Dark Energy Survey
in Monthly Notices of the Royal Astronomical Society
Gatti M
(2018)
Dark Energy Survey Year 1 results: cross-correlation redshifts - methods and systematics characterization
in Monthly Notices of the Royal Astronomical Society
Smethurst R
(2018)
SDSS-IV MaNGA: the different quenching histories of fast and slow rotators
in Monthly Notices of the Royal Astronomical Society
Penny S
(2018)
SDSS-IV MaNGA: evidence of the importance of AGN feedback in low-mass galaxies
in Monthly Notices of the Royal Astronomical Society
Wethers C
(2018)
UV-luminous, star-forming hosts of z ~ 2 reddened quasars in the Dark Energy Survey
in Monthly Notices of the Royal Astronomical Society
Description | The Dark Energy Survey is an on-going STFC project (ending in 2018). The data from this instrument will probe the nature of the dark universe and has already spawned neary 60 academic papers from the initial data (taken in 2013-14). This observing trip was part of that initial data run. |
Exploitation Route | The goal of the DES is dark energy and dark matter. This fundamental science fascinates the public and is part of our culture now. |
Sectors | Culture, Heritage, Museums and Collections |
URL | http://www.darkenergysurvey.org |
Description | DES |
Organisation | Dark Energy Survey (DES) |
Country | Global |
Sector | Charity/Non Profit |
PI Contribution | Scientific leadership and guidance, preparation of scientific simulations and preparations, organisation of meetings and events |
Collaborator Contribution | Access to proprietary data and scientific collaboration |
Impact | Scientific publications (see publication list) |
Start Year | 2006 |
Description | Cosmology Masterclass |
Form Of Engagement Activity | A talk or presentation |
Part Of Official Scheme? | No |
Geographic Reach | Regional |
Primary Audience | Schools |
Results and Impact | Since 2012 the Cosmology Masterclass has engaged and inspired over 200 A level students with research at the ICG. The Cosmology Masterclass began as a collaboration with The Portsmouth Grammar School in 2010 and is now held annually on campus, with several additional 'mini-Masterclasses' each year at local colleges. - Feedback from the 2013 event was some of the best the University has received for an A level event. - Over the years 13 students have subsequently joined ICG for summer placements of which four cite their experiences at ICG as helping them to decide to pursue STEM subjects at university. |
Year(s) Of Engagement Activity | 2010,2012,2013,2014 |
Description | Stargazing Live 2015 |
Form Of Engagement Activity | Participation in an activity, workshop or similar |
Part Of Official Scheme? | No |
Geographic Reach | Regional |
Primary Audience | Public/other audiences |
Results and Impact | 450 members of the public attended the annual Stargazing Live at Portsmouth Historic Dockyard event organised by the Institute of Cosmology and Gravitation with HMS Warrior and Action Stations. The majority of Co-Is participated in the event, talking to attendees about their research through stands and hands-on activities. The event was also attended by several local councillors. Many attendees reported that the event had inspired them to find out more about astronomy or attend more science-related events. |
Year(s) Of Engagement Activity | 2015 |
Description | TV appearance - Horizon - Nichol |
Form Of Engagement Activity | A broadcast e.g. TV/radio/film/podcast (other than news/press) |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Public/other audiences |
Results and Impact | Professor Bob Nichol featured in an episode of BBC Horizon: Dancing in the Dark - The End of Physics? The Horizon crew accompanied Professor Nichol to Chile and, in the documentary, he discusses the scope of cosmology, the observational evidence for the nature of dark matter, and the mystery of dark energy which is expected to occupy astrophysics for some time. |
Year(s) Of Engagement Activity | 2015 |