Author name: Knud Jahnke

Instrument Scientist for Euclid's NISP Photometry channel since 2011 from the Max Planck Institute for Astronomy in Heidelberg, Germany. Euclid Consortium Blog author and website content curator as part of the EC-EPO group. Likes galaxies and black holes.

Euclid scientists discover most distant known quasars

Consortium, Publication, Science / By

Quasars are growing super-massive black holes, they are the most powerful continuous energy sources in the Universe. Quasars are a key to understanding the formation of structure in the early Universe, and can also be used as very distant background light-sources to study the distribution of gas across space. Consortium scientists have now discovered 31 new quasars in the very early Universe using the first 18 months of Euclid data, more than doubling the known numbers, including the two most distant quasars known to date.

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Euclid scientists discover most distant known quasars Read More »

Euclid Q1 special issue of Astronomy & Astrophysics

Consortium, ESA, Publication, Science / By

All results from the Euclid mission as well as a lot of reports, tests, and predictions are published as peer reviewed articles in scientific journals. The vast majority of almost 300 papers written by Euclid Consortium and ESA members so far were sent for publication in ‘Astronomy & Astrophysics’. Now an A&A ‘Special Issue’ collectively publishes 41 Euclid articles from last year’s data relase Q1.

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Euclid Q1 special issue of Astronomy & Astrophysics Read More »

Light and dark matter in Abell 2390

Euclid starts seeing darkness

Consortium, People, Publication, Science / By

Euclid‘s core mission to study the nature of dark energy includes two central probes: one is tracking the expansion history of the Universe, the other traces structure formation over cosmic time. Ahead of the first cosmology results coming out in 2027, scientists have now published a first demonstration that Euclid can indeed trace massive structures dominated by usually invisible dark matter, using the technique of ‘weak gravitational lensing’.

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Euclid starts seeing darkness Read More »

Euclid and HST join forces to look at a Cat’s Eye

Consortium, ESA, Science, Telescope and instruments / By

Euclid covers a much larger area in every image compared to previous space telescopes, all while resolving details. The Hubble Space Telescope has a roughly 2x larger mirror than Euclid and can still resolve structures twice as fine, but over a much smaller area: It could in principle carry out Euclid’s Wide Survey, but it would take 100s of years instead of only six. So what happens when combining Hubble’s eye for detail and Euclid’s field of view? Something incredible is the result.

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Euclid and HST join forces to look at a Cat’s Eye Read More »

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