America has learned the hard way that falling behind in science and technology can be costly. Now, the legacy of U.S. leadership in astronomy is threatened as the National Science Foundation considers whether to fund two giant telescope projects. Our President Eric D. Isaacs and Caltech President Thomas Rosenbaum state the case for the U.S. Extremely Large Telescope Program in today's Los Angeles Times. "What’s at stake is falling behind in astronomy and cosmology, potentially for half a century, and surrendering the scientific and technological agenda to Europe and China."
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Check out more big news from the Cosmos with new findings from Physics & Astronomy LSU professor Eric Burns and colleagues.
“This burst is way into the long category. It’s not near the border. But it seems to be coming from a merging neutron star,” said study coauthor Eric Burns, assistant professor of physics and astronomy at Louisiana State University" https://lnkd.in/gvtNtAaD
Massive cosmic explosion creates rare elements in space | CNN
cnn.com
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📃Scientific paper: On Cepheid distances in the $H_0$ measurement Abstract: Classical Cepheids were the first stellar standard candles and have played a crucial role for astronomical distance measurements ever since the discovery of the Leavitt law (period-luminosity relation). Enormous improvements in distance accuracy have been achieved since Hertzsprung's first application of Leavitt's law to measure the distance to the Small Magellanic Cloud in 1913, notably in very recent years thanks to a large data set of highly accurate space astrometry from the ESA mission Gaia. Complemented by homogeneous space photometry, Cepheids enable the most accurate distance estimates to galaxies hosting type-Ia supernovae up to approximately 70 Mpc distant. Here, I review the history of Cepheid distance measurements, open questions on the side of stellar astrophysics, and recent studies seeking to quantify and mitigate systematics with a view to further improve the accuracy on the Hubble constant. For example, the recently launched James Webb Space Telescope will enhance precision due to 4x lower sensitivity to source blending in crowded regions and greater sensitivity in dust-insensitive infrared bands. Future 30m-class telescopes could in principle further improve Cepheid distance measurements towards the Hubble flow, if technical challenges related to a continuously evolving instrument can be overcome. ;Comment: 20 pages plus references. Finalized in early October 2023. To appear as a chapter in the Book "The Hubble Constant Tension", edited by E. Di ... Continued on ES/IODE ➡️ https://etcse.fr/eB6Yl ------- If you find this interesting, feel free to follow, comment and share. We need your help to enhance our visibility, so that our platform continues to serve you.
On Cepheid distances in the $H_0$ measurement
ethicseido.com
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Lambda Cold Dark Matter, or ΛCDM, has been for many years the standard cosmology model. However, the multiple contradictions with observations, including the recent pictures taken by the Webb space telescope, are reducing the credibility of the theory, which postulates an undetectable substance called dark matter in a futile effort to explain some anomalies, but not all of them. Alternative models are proposed to explain those anomalies. My favorite is Quantised Inertia, but there are others such as MoND. Now The University of Alabama in Huntsville (UAH) has published a paper proposing an alternative theory to ΛCDM, decoupling gravity from mass.
UAH Research Suggests Gravity Without Mass Could Eliminate Need for Dark Matter
spacedaily.com
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ALMA Achieve Unprecedented Resolution to Observe the Universe "Yoshiharu Asaki, the ALMA Astronomer who led this project, highlighted the collaborative effort: "This remarkable achievement in high-resolution imaging through ALMA's advanced capabilities marks a significant milestone in our quest to understand the Universe. The success of the Band 10 high-resolution observation showcases our commitment to innovation and reinforces ALMA's position as a leader in astronomical discovery. We are excited about the new possibilities for the scientific community." https://lnkd.in/eYWCBZG5
ALMA Achieve Unprecedented Resolution to Observe the Universe
https://www.almaobservatory.org
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https://lnkd.in/dC2fV-dW New blog on navigating the cosmos; the role of advanced technologies in modern astronomy. Do read it now by clicking on this link! For more blogs, check out here- https://lnkd.in/enG64dWD
Navigating the Cosmos: The Role of Advanced Technologies in Modern Astronomy
futuristicphotons.blogspot.com
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📃Scientific paper: Modelling magnetically formed neutron star mountains Abstract: With the onset of the era of gravitational-wave (GW) astronomy, the search for continuous gravitational waves (CGWs), which remain undetected to date, has intensified in more ways than one. Rapidly rotating neutron stars with non-axisymmetrical deformations are the main targets for CGW searches. The extent of this quadrupolar deformation is measured by the maximum ellipticity that can be sustained by the crust of a neutron star and it places an upper limit on the CGW amplitudes emitted by such systems. In this paper, following previous works on this subject, we calculate the maximum ellipticity of a neutron star generated by the Lorentz force exerted on it by the internal magnetic fields. We show that the ellipticity of stars deformed by such a Lorentz force is of the same order of magnitude as previous theoretical and astrophysical constraints. We also consider if this ellipticity can be further enhanced by crustal surface currents. We discover that this is indeed true; surface currents at crustal boundaries are instrumental towards enhancing the ellipticity of magnetized neutron stars. ;Comment: 17 pages, 15 figures Continued on ES/IODE ➡️ https://etcse.fr/cXfgo ------- If you find this interesting, feel free to follow, comment and share. We need your help to enhance our visibility, so that our platform continues to serve you.
Modelling magnetically formed neutron star mountains
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Why scientists are making space data into sounds, Histogram showing the relative amount of BLV and sighted participants. Red (blue) bars represent sighted (BLV) participants. The x-axis shows the participant counts and the y-axis shows the self-reported level of astronomy knowledge from novice to expert. Note the significant difference between BLV and sighted participants. Thirteen participants omitted astronomical knowledge or BLV status and were omitted from this figure., : Histogram showing the relative
Why scientists are making space data into sounds
copernical.com
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A recent collaborative study by teams from Japan, Italy, and the U.S, led by Louisiana State University, has made a groundbreaking discovery using the CALorimetric Electron Telescope (CALET) on the International Space Station. By analyzing over seven million data points collected since 2015, the research identifies nearby sources of high-energy cosmic ray electrons, shedding new light on supernova remnants and enhancing our understanding of our galaxy. The research, published in Physical Review Letters, showcases the value of international collaboration in advancing knowledge. A notable achievement is the confirmation of local cosmic ray electron sources, believed to originate from nearby supernova remnants. The team developed a program to differentiate between high-energy electrons and protons, improving the reliability of their analysis. Interesting findings include the detection of high-energy electrons, which demonstrate the capabilities of the CALET instrument and provide valuable insights into cosmic rays' behavior and origins. While this research uncovers local cosmic ray electron sources, it also prompts questions about their acceleration and transport mechanisms. Continuous measurements by CALET will be crucial to resolve these cosmic enigmas. This study's significance reaches beyond astrophysics, potentially impacting areas like space exploration, medical imaging, and radiation protection. As the data analysis continues, we may unlock more secrets of our universe, bringing us closer to comprehending the cosmos. Join the conversation - what are your thoughts on these discoveries and their potential implications? Original article: https://lnkd.in/eApCwUuZ
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🌟 We are excited to announce a distinguished figures in science and technology! 🌟 Today, we proudly spotlight Hugh Frank Newall, an eminent astronomer whose pioneering work expanded our understanding of the cosmos. 🌌👏 Huge applause to our talented AIML student, Aditya Verma, for creating today's exceptional poster that beautifully encapsulates Newall's remarkable contributions. 🎨✨ Hugh Frank Newall: The Visionary Astronomer 🌌 Achievements in Astronomy: Hugh Frank Newall is renowned for his significant contributions to the field of astronomy. His work with large telescopes and his innovative spectroscopic studies have greatly enhanced our understanding of stellar and solar phenomena. 🔭 From Observations to Discoveries: Newall's dedication to astronomical observation led to advancements in our knowledge of the sun's spectrum and the behavior of stars. His research was instrumental in developing new techniques for studying celestial objects. 📝 Legacy and Honors: Newall's impactful work in astronomy earned him a lasting legacy among the scientific community. His contributions to the design and use of large telescopes have paved the way for modern astronomical research and discoveries. 🌟 Inspiration for Future Generations: Newall's passion for exploring the universe and his innovative approach to observing the stars continue to inspire astronomers and scientists. His legacy lives on in the ever-expanding field of astronomy, encouraging new generations to reach for the stars. Join us as we continue to honor the innovators who are shaping our future. 🚀🌍 #IEEE #AryabhattaClub #Science #Innovation #Astronomy #HughFrankNewall #PioneersInScience #StellarResearch #Spectroscopy #CelestialExploration #ScientificDiscovery #SpaceScience #LegacyOfExcellence #Inspiration #FutureScientists #TechLeaders #STEM #Astrophysics
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Ecopreneur at Odyssey, Next Generation Leader, Senior Fellow UN SDG's, Consultant Sustainable Tourism, Believer Regenerative Lifestyle, Sustainable Brand Strategist, Host at SustainBizz Podcast - 'Coffee with Erum'
3-D Map of the Cosmos ...... DESI has made the largest 3-D map of our universe to date. Earth is at the center of this thin slice of the full map. In the magnified section, it is easy to see the underlying structure of matter in our universe. (Credit: Claire Lamman/DESI collaboration) We now have the largest 3-D map of our cosmos ever created, thanks to a powerful instrument mounted atop a telescope in Arizona with a robotic array of 5,000 fiber-optic “eyes” that look into the night sky. Over the last five years, the Dark Energy Spectroscopic Instrument—known in science circles as DESI—has measured the spectra of more than 30 million galaxies and 3 million quasars to determine how fast the universe expanded over 11 billion years. DESI’s announcement today is the result of an ongoing international collaboration comprising more than 900 researchers from over 70 institutions, including astronomers at UC Santa Cruz with leadership roles in the project. https://lnkd.in/deBcbZ49
First results from DESI make the most precise measurement of our expanding universe
news.ucsc.edu
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Totally off topic, but American-made camera lenses please 🙏