Neutron stars liu jia
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This document discusses neutron stars and explores them as natural laboratories for studying extremely dense matter. It provides background on stellar evolution and supernovae that form neutron stars. Neutron stars are incredibly small yet dense, with masses of around 1.35-2 times the sun's mass compressed into the size of Manhattan. They also spin incredibly fast due to conservation of angular momentum. The document examines using neutron stars to study how matter behaves under extreme density and discusses challenges in measuring their precise masses and radii from Earth. It outlines the author's research simulating neutron star atmospheres to help answer fundamental physics questions about their properties.
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Neutron stars liu jia
- 1. Exploring the Neutron Star 探索中子星 Jia Liu 刘佳 Gesamtkunstwerk 1020 2012 - 04 - 20
- 4. Kepler's Supernova, SN 1604 Credit: NASA/ESA/JHU/R.Sankrit & W.Blair
- 5. Kepler's Supernova, SN 1604 Credit: NASA/ESA/JHU/R.Sankrit & W.Blair
- 6. The Crab Nebula, SN 1054 Credit: NASA/ESA/ASU/J.Hester & A.Loll 《宋史·天文志-第九》 对蟹状星云的记载
- 7. The Crab Nebula, SN 1054 Credit: Optical: NASA/ESA/ASU/J.Hester & A.Loll; X-ray: NASA/CXC/ASU/J.Hester et al.
- 8. Mass of a Neutron Star Earth Mass 6 × 1024 kg Solar Mass 2 × 1030 kg Mass of Neutron Star ~ 1.35 - 2 Solar mass
- 9. The Size of a Neutron Star ~ The size of Manhattan
- 10. Neutron Star is Very Very ... Dense! The density of neutron star is equivalent to the mass of the entire human population compressed to the size of a sugar cube. 7 Billion
- 11. Conservation of Angular Momentum 7 Billion Similarly, changing from the size of the Sun to the size of Manhattan (while keeping its mass) makes neutron star spin very fast.
- 12. Neutron Star Spins Very Very ... Fast! 7 Billion Earth Period 1 day (86,400 seconds) Neutron Star Period ~ 0.01 seconds .
- 13. The Microscopic World Molecules Atoms NucleusQuarks Proton Neutron Fundamental physics question: How matter behaves in extremely dense environment?
- 14. Neutron Star as A Laboratory How matter behaves in extremely dense environment (nuclei density)? We are unable to create such dense environment in any laboratories on Earth, so Neutron star, where we can observe the densest matters in our Universe, become our lab in the sky.
- 15. Neutron Star as One Giant Neutron The key question to answer: What is the mass - radius relation for neutron star?
- 16. Mass - Radius Relation But it's difficult to measure the mass and radius of a neutron star, because they're only as big as Manhattan, but hundreds of light years away. It's like to measure the size of an atom in California from New York!
- 17. My Research: Simulating Neutron Star Atmosphere RXTE Space Telescope
- 18. My Research: Simulating Neutron Star Atmosphere Simulation run11.75 layer 0
- 19. We are learning more and more about neutron stars, However, " This is not the end. It is not even the beginning of the end. But it is, perhaps, The end of the beginning. " - Sir Winston Churchill
- 20. My Research: Simulating Neutron Star Atmosphere