jwst Definition and 25 Threads

From the Orlando Sentinel newspaper.

Hello. I came across this article, https://astrobites.org/2024/02/17/cosmic-inconsistencies/ and followed the link to this paper, https://arxiv.org/abs/2305.07049 Insights from HST into Ultra-Massive Galaxies and Early-Universe Cosmology and have read the .pdf For the moment I have just one...

JWST is detecting objects that would have been emitting light BEFORE the CMB. If so, their light has already passed us for eons, and we are now accelerating into their ancient photon-stream in the opposite direction of the original object, revealing faint and blurry images like the 'ultra-faint...

Dr. Becky Smethurst provides a summary of the latest analysis of JWST data by Freedman et al., indicating that there's no statistically significant discrepancy between the value of the Hubble constant thus obtained and the value obtained from Lambda-CDM using Planck data.

Covers: - Low-frequency gravitational waves - Quantum energy teleportation - JWST Discoveries

I've recently been tasked with obtaining transit spectrum data for some fascinating celestial bodies, including Ceres, Enceladus, Ganymede, Io, and Titan. The goal is to compare their transit spectra with that of Earth. However, I'm facing a bit of a challenge when it comes to using the Github...

I'm looking for a ballpark estimate of the number of astronomers who directly use raw James Webb Space Telescope data, in part, to be able to compare it to the number of scientists using data from other telescopes and scientific experiments.

• CERN talk : indico.cern.ch/event/1153372/contributions/5200955/ • Presentation materials : bit.ly/MAGIC23AMayer • CERN MAGIC23 : indico.cern.ch/event/1153372/ Talk Description (Abstract) We present empirical evidence from the Sloan Digital Sky Survey (SDSS), including...

Hello. I was wondering if the experts here would like to comment on this news? Thus far I've been unable to find a link to any science paper. Thank you, Cerenkov.

As of now, it appears the ΛCDM can accommodate this new data but new data is needed to be sure. https://www.quantamagazine.org/standard-model-of-cosmology-survives-jwsts-surprising-finds-20230120/

I thought this might be interesting. It is the JWST Observing Schedule

Thanks to the JWST, we have this stunning picture. The APOD description says What are the processes that eject material at this stage?

[Mentor Note -- Discussion spun off from the main JWST thread] Yes, the apparent hexagonal shape of that star is due to the diffraction within the telescope optics (optical filter characteristics may also have played a role). For clarity, we're talking about this star: They are (images...

A paper just out seems to describe a galaxy formed ~250 myr after the BB. One of many records that JWST will be both setting and breaking as the data pours in. With the papers focus on UV, this is probably going to be a Pop 3 star search. Section 6.2 of the paper describes the studies findings...

As most of us know, James Webb Space Telescope suffered a damage to one of its mirror segments due to meteoroid impact. How will that damage show in the images? Some people on certain forum I visit say that there will be some artifacts visible in only one part of the image, but that doesn't...

Hello. Could somebody please explain to me why the discovery of the unexpected number of spiral galaxies in this image is a cause for panic? My naïve understanding is that this is at odds with the currently accepted model of galaxy formation in the early universe. Any help give at a Basic...

I've read the NIRCam instrument uses HgCdTe imaging sensors... "JWST NIRCam has ten 2K × 2K HgCdTe detectors" https://jwst-docs.stsci.edu/jwst-near-infrared-camera/nircam-instrumentation/nircam-detector-overview I found this chart which displays the relative sensitivity of the NIRCam sensor...

When I'm Photoshopping or film editing or 3D modeling, , I wait until the last possible moment to combine anything. Once combined, the individual data would be lost. Why bother physically combining the images from JWSTs segments? Why not receive the data as 18 channels, store them separately...

JWST is only four times as far away as the Moon and its sunshield is more than 15m across. Too small to resolve it but it's very well lit and it is against a pretty dark background on occasions. Its position is 'well known and there are some pretty big light bucket amateur scopes around. Has...

When the Webb is at a point on its L2 orbit, (not at L2), what direction is the centrifugal force vector compared to the direction of the combined earth-sun gravity vector on the opposite side? Is the direction of this centrifugal vector ALWAYS parallel to the sun-earth plane? or is it always...

News A variety of targets will be looked at, including planets and moons within our solar system, various star systems and many galaxies from the early universe, where the high redshift and Hubble’s wavelength range made observations difficult. For exoplanets, the strategy is to look at the...

The JWST is under threat due to budget cuts. http://news.yahoo.com/scientists-condemn-plans-scrap-hubble-telescope-successor-144202116.html I doubt anyone here will be happy with this news. What can we do about it?

What are your thoughts on this? The U.S. government is considering scrapping the Hubble replacement (James-Webb Space Telescope). This is due to mismanagement and going over budget billions of dollars. This potential revolutionary telescope would be able to look far back into the very...

http://www.space.com/spacenews/businessmonday_051121.html" A $1 billion dollar cost growth on the mission is a lot, but considering the value and continuing contributions of Hubble to this very day, I think we can all agree that the JWST is a priority mission for NASA’s universe division...