Dark Energy Survey
(DES)
(survey aimed at mapping the universe's expansion)
The Dark Energy Survey (DES)
is a survey of various phenomena that reveal
the course of the expansion of the universe, including
Type Ia supernovae, baryon acoustic oscillations (BAOs),
counts of early galaxy clusters, and weak lensing.
Its aim is measuring and confirming the existence of dark energy.
It is being carried out by
an international collaboration of research institutions.
The planned observations are complete, and analysis continues.
Observations were conducted
from 2013 to 2019 using the Blanco 4m telescope at the
Cerro Tololo Inter-American Observatory (CTIO) in Chile.
The size of the survey area is 5000 square degrees,
about 1/8 of the sky.
The camera (DECam, for Dark Energy Camera)
imaged visible light and some near infrared,
with about three square degrees per image.
Thousands of supernovae were observed, too many for
spectrography during the useful parts of their
light curves, so only about a thousand
received such treatment (in collaboration with the Anglo-Australian Telescope (AAT)
OzDES project, using AAT's multi-object spectrograph, AAOmega
with fiber positioner 2dF), the rest analyzed through photometry
and identification of the (probable) host galaxy, for which a
redshift can be determined later.
(survey,dark energy,supernovae,Chile)
Further reading:
https://en.wikipedia.org/wiki/Dark_Energy_Survey
http://www.darkenergysurvey.org/
https://www.mso.anu.edu.au/ozdes/
https://ui.adsabs.harvard.edu/abs/2005ASPC..339..152W/abstract
https://arxiv.org/abs/astro-ph/0510195
https://arxiv.org/abs/astro-ph/0510346
https://ui.adsabs.harvard.edu/abs/2022MNRAS.509..778C/abstract
https://ui.adsabs.harvard.edu/abs/2023PhRvD.107h3504A/abstract
https://arxiv.org/abs/2402.10696
https://www.cmu.edu/mcs/news-events/2024/0108_dark-energy-survey-supernova-results.html
https://noirlab.edu/public/news/noirlab2401/
Prefix | Example | | |
DES | DES J0211-0646 | | |
|
Referenced by pages:
supernova survey
Víctor M. Blanco Telescope
Index