With the reveal of the first full-colour images of #ESAEuclid
👉🏻 only 2️⃣ days away
(did we mention that already? 😉 )
if you want to read up on the scientific and technical background of the #Euclid mission, the spacecraft 🛰️ , the instruments 📷 and science 👩🏾🔬 , we recommend our #EuclidConsortium website:
These images will feature combined data from both of #Euclid's instruments, the VIS visible instrument and the near-infrared spectrometer and photometer NISP.
#Euclid’s first science images will be released in 5 days!
#ESA’s Euclid is a space telescope that aims to explore the dark side of the universe. It will map the distribution and evolution of dark matter and dark energy, which make up most of the mass and energy in the cosmos.
Coming Tuesday, 7 November, #ESA will release the first full-colour, full-resolution images of #ESAEuclid. We did indeed mention that before in the last days. #countdown
👉 6️⃣ days to go
Here is how you will be able to view the release webcast, 7 November at 14:15 CET, 13:15 GMT:
until #ESA will release the first full-colour, full-resolution images from #ESAEuclid's "Early Release Observation" programme. We showed images before, the #Euclid "First Light" 🛰️ 💡 engineering images, 3 months ago, with all instrument effects and cosmic ray hits still in them. This is what they were:
We have a new post in our Blog article series illuminating 🪔the #science background 👩🏻🔬 👨🏾🔬 of ##ESAEuclid 🛰️ and the techniques we'll employ for high-precision #cosmology: "Measuring the Universe with Baryon Acoustic Oscillations"
With simulations, it investigates whether we can use the distance between central galaxies and the centre of clusters to detect self-interacting #darkmatter .
➡️ yes, but one needs a large statistics of objects to detect this on <10kpc scales.
If you want to read up on what "weak gravitational lensing" is 🔎, how that can make #DarkMatter visible, and how #ESAEuclid is using it, then read our latest blog post:
Read up on why some science requires a telescope outside Earth's atmosphere 🌏 and compare ground-based images with the first images of #Euclid. Our new blog post: “Why is going to space crucial to map dark matter?”
In our short series on the physics 🔬 background of #ESAEuclid 🛰️ we follow up last week's blog post on what could be #DarkEnergy, with "What is and what could be #DarkMatter?"
Dark Matter Could Be Annihilating Inside White Dwarfs
Astronomers still don't know what dark matter is, but one of its characteristics is that it has a small "cross section," which means that it doesn't interact with regular matter or itself. However, if it's possible to trap dark matter in a region dense enough, it might interact and annihilate, releasing gamma radiation. A new paper suggests that astronomers use gamma-ray observatories to scan white dwarf stars to discover whether there's an excess of radiation coming from them. This might mean there's dark matter trapped inside, providing more clues to its nature.
Mysterious Dark Matter Mapped Across Space Like Never Before (www.sciencealert.com)
The curvature of space-time around a colossal mass has yielded the most detailed measurement of the cosmic distribution of dark matter yet.