American Astronomical Society (AAS)’s Post

Happy to finally have this paper on the arXiv! We show how to model the gas thermodynamic on top of large gravity-only simulations, and predict accurately tiny spectral distortions of the cosmic microwave background, known as the thermal Sunyaev Zel’dovich effect. At the same time, we compute the bending of light paths given by the gravity of cosmic structure, the so-called cosmic shear. The purpose is to use upcoming surveys to learn simultaneously about cosmology and astrophysics! https://lnkd.in/d7ETdBjT

🎓 2024 Lewis Graduate Claire Zwicker (PHYS, ASTR ’23) wants to dedicate her life to solving the world's many wonders, choosing astrophysics because she “find[s] the questions in astronomy and physics to be very interesting to probe and answer.” Her research on binary stars in star clusters has been published in prestigious journals and earned her recognition from the American Astronomical Society. Want to learn more about her fascinating discoveries and how she's using cutting-edge technology to peer into the universe's secrets? Read the full story: https://bit.ly/3Qp6Grl

Using the AUM High Performance Computing Center, I have published numerous papers to date. I wanted to share with you my newly accepted publication, which also utilized the AUM-HPC. This publication is significant because it proposes a physical mechanism that can explain observational results in astronomy, such as the shadow of the M87 black hole observed by the EHT telescope, and has been accepted in a highly impactful journal in the field of astrophysics and astronomy. This paper, where I am the sole author, has been accepted for publication in the Journal of Cosmology and Astroparticle Physics, which has an impact factor of 5.3 (CiteScore 10.2).

Karl Schwarzschild: Pioneer of Black Hole Physics Karl Schwarzschild was a German physicist and astronomer born on October 9, 1873. He is best known for his groundbreaking work in understanding black holes. While serving in the army during World War I, Schwarzschild solved a complex set of equations that Albert Einstein had developed in his theory of general relativity. His solution, known as the Schwarzschild solution, describes how gravity works around objects like planets, stars, and even black holes. One of his most famous ideas is the Schwarzschild radius, which is the distance from the center of a black hole at which nothing, not even light, can escape the black hole’s gravity. This radius marks the edge of what is called the event horizon of a black hole. Even though he made such important discoveries, Schwarzschild's life was cut short. He passed away in 1916 at the age of 42 from a rare illness while still serving in the military. His work remains crucial for modern astrophysics, especially in understanding how the universe works on a grand scale. Today, scientists continue to build on his ideas to study black holes and the nature of space and time.

Beginning the year 2024 with three books in astronomy. May Allah give me strength to finish them all by this year. The books are: 1. The history of astronomy, A very short introduction by Michael Hoskin 2. Near-Earth Objects, Finding them before they find us by Donald H. Yeomans 3. Planetary sciences by Imke de Pater and Jack J. Lissauer For me, to be a proper astronomer and astrophysicists, I must know the history of astronomy and how it develops until this modern day. Also to help me read effectively, I am reading a book called: How to read a book by Mortimer J. Adler and Charles Van Doren. Hoping for the best of memories in the year 2024.😊😁

"With measurement errors negated, what remains is the real and exciting possibility we have misunderstood the universe," lead study author Adam Riess, professor of physics and astronomy at Johns Hopkins University, said in a statement. Cosmology had been hurled into uncharted territory. "We wouldn't call it a tension or problem, but rather a crisis," David Gross, a Nobel Prize-inning astronomer, said at a 2019 conference at the Kavli Institute for Theoretical Physics (KITP) in California. James Webb telescope confirms there is something seriously wrong with our understanding of the universe, Live Science, 14 March 2024 https://lnkd.in/dSpMuhhJ #paradigmshift #universe #cosmology #errors #problem #crisis #JamesWebbtelescope #understandingoftheuniverse #LiveScience #physics #astrophysics #astronomy #followthescience

To the many of you, who have always wondered how to solve the differential equation f"=-f^s for any s, I've got your back! Freshly published by Physical Review and accessible at https://lnkd.in/gKJQBuY6, the paper re-analyses this historically interesting equation describing sperical collapse processes in astrophysics, fluid dynamics and several other fields. Video: cavitation bubble in microgravity (Credit Outi Supponen) ICRAR (International Centre for Radio Astronomy Research) | International Space Centre | The University of Western Australia | #cavitation

I just finished reading all 320 pages of this magnificent textbook. It teaches stars and general astrophysics without using confusing (and often irrelevant) astronomy jargon. For example, it teaches you *what* a white dwarf is without actually telling you its name (until much later). (Planetary nebulae… please, the name is so last century…) It also contains a wealth of exercises and their solutions (in the appendix). It’s part of my plan for overhauling the Astrophysics Essentials course that we will teach to our incoming Master students this fall/winter at LMU.

Astronomers base their studies on research and observation. Astronomy is a science that studies everything outside of the earth's atmosphere, such as planets, stars, asteroids, galaxies, and the properties and relationships of those celestial bodies. There are current efforts and investments in this field. #astronomy https://lnkd.in/gSfibrrk.

Unraveling the Mysteries of Dark Matter and Dark Energy The universe, with its immense expanse and intricate structure, has long captivated the minds of scientists and astronomers. Despite significant strides in our understanding of the cosmos, two enigmatic components—dark matter and dark energy—continue to perplex researchers. Comprising approximately 95% of the universe's total mass-energy content, these mysterious entities remain largely undetectable and incomprehensible, presenting one of the greatest challenges in contemporary astrophysics. Read the full article: https://lnkd.in/gSfEkt34