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Amir Siraj

From EverybodyWiki Bios & Wiki






Amir Siraj is an American astrophysicist.[1][2] He is a student at Harvard University and the New England Conservatory of Music.[3][4][5] He was named the youngest scientist on the 2021 Forbes 30 Under 30 list.[6] Siraj's research pertains to interstellar objects,[7][8][9][10] the Solar System,[11][12][13][14] comets and asteroids,[15][16][17] extrasolar planetary systems,[18][19] black holes,[20] and supernovae.[21] He is a classical pianist and young Steinway Artist.[22][23][24]

Siraj demonstrated that the Chicxulub impactor, which led to the extinction of the dinosaurs, could be a fragment of a long-period comet that was tidally disrupted by the Sun, since such a scenario would solve the tension theoretical tensions in explaining the impact's recency and magnitude.[25][1][2][26][27][28][29][30][31] Siraj showed that the Oort Cloud could have been formed as observed from ejected planetesimals from other stars in the Sun's birth cluster, indicating the possible former existence of a solar binary companion.[32][33][34][35][36][37][38][39] Siraj theorized a new method for detecting small black holes.[40][41][42][43][44][45][46][47][48] Siraj proposed searches for trapped interstellar objects in the Solar System,[49][50][51] stellar occultations caused by interstellar objects,[52] optical signatures of interstellar meteors in the Earth's atmosphere,[53][54] and electromagnetic radiation from collisions between interstellar objects and the Moon,[55][56][57] as well as impacts on neutron stars.[58] Siraj published constraints on the morphology of interstellar objects Oumuamua and Borisov,[59][60][61] reported the first discovery of a meteor that originated outside the Solar System,[62][63][64][65][66][67][68] and developed a method for determining the characteristic ejection speeds of interstellar objects from their parent planetary systems.[69][70]

References

  1. ↑ 1.0 1.1 Fox, Jeremy (2021-02-15). "Harvard researchers theorize dinosaurs were killed by Boston-sized comet chunk from edge of solar system". The Boston Globe. Retrieved 2021-02-16. Unknown parameter |url-status= ignored (help)
  2. ↑ 2.0 2.1 Ferreira, Becky (2021-02-15). "Where Did the Dinosaur-Killing Impactor Come From?". The New York Times. ISSN 0362-4331. Retrieved 2021-02-16.
  3. ↑ "Amir Siraj". scholar.harvard.edu. Retrieved 2021-02-16.
  4. ↑ "Senior Concentrator Amir Siraj awarded a place in the Forbes 30 Under 30 for 2021. He is the youngest member in this year's Science cohort". astronomy.fas.harvard.edu. Retrieved 2021-02-16.
  5. ↑ "Amir Siraj Advocates for National Parks Through New Music Project". New England Conservatory of Music. Retrieved 2021-02-16. Unknown parameter |url-status= ignored (help)
  6. ↑ "Forbes 30 Under 30 2021: Science". www.forbes.com. Retrieved 2020-12-07. Unknown parameter |url-status= ignored (help)
  7. ↑ Williams, Matt (2018-11-29). "There Could be Hundreds of Interstellar Asteroids and Comets in the Solar System Right Now That we Could Study". Universe Today. Retrieved 2020-12-07.
  8. ↑ CNN, AJ Willingham. "A meteor from another solar system may have hit Earth, and the implications are fascinating". CNN. Retrieved 2020-12-07.
  9. ↑ August 2019, Mike Wall 30. "A Telescope Orbiting the Moon Could Spy 1 Interstellar Visitor Per Year". Space.com. Retrieved 2020-12-07.
  10. ↑ Williams, Matt (2020-11-07). "Vera Rubin Should be Able to Detect a Couple of Interstellar Objects a Month". Universe Today. Retrieved 2020-12-07.
  11. ↑ "Did the Sun have an early binary companion?". Cosmos Magazine. 2020-08-20. Archived from the original on 2020-11-16. Retrieved 2020-12-07.
  12. ↑ Williams, Matt (2020-02-18). "There Could be Meteors Traveling at a Fraction of the Speed of Light When They Hit the Atmosphere". Universe Today. Retrieved 2020-12-07.
  13. ↑ "Interstellar Visitors Could Export Terrestrial Life to Other Stars". Eos. Retrieved 2020-12-07.
  14. ↑ Ciaccia, Chris (2020-09-27). "Meteors that brushed Earth's atmosphere may have brought life to Venus, study says". Fox News. Retrieved 2020-12-07.
  15. ↑ "CfA research on twin suns, 'Oumuamua, and Betelgeuse". Harvard Gazette. 2020-09-04. Retrieved 2020-12-09.
  16. ↑ "New theory behind Chicxulub impactor that killed the dinosaurs". Harvard Gazette. 2021-02-15. Retrieved 2021-02-16.
  17. ↑ "The Mind-Boggling Theory That We Could Be Descended from Martians". www.vice.com. Retrieved 2021-02-16.
  18. ↑ Carter, Jamie. "Asteroid Day: Any Life On The Closest Exoplanet To Us May Be Under Attack". Forbes. Retrieved 2020-12-07.
  19. ↑ "According to the Math, it's Highly Unlikely That an Intelligent Civilization is Located at Alpha Centauri". Universe Today. 2021-01-17. Retrieved 2021-02-16.
  20. ↑ Overbye, Dennis (2020-09-11). "Is There a Black Hole in Our Backyard?". The New York Times. ISSN 0362-4331. Retrieved 2020-12-07.
  21. ↑ "Ancient supernovas may have pierced moon rocks with star shrapnel". Popular Science. Retrieved 2020-12-07.
  22. ↑ "Soundboard — Amir Siraj - Steinway & Sons". www.steinway.com. Retrieved 2021-02-16.
  23. ↑ "Amir Siraj - Steinway & Sons". www.steinway.com. Retrieved 2021-02-16.
  24. ↑ "The Musical Inspiration of National Parks". National Park Foundation. Retrieved 2021-02-16.
  25. ↑ Siraj, Amir; Loeb, Abraham (2021-02-15). "Breakup of a long-period comet as the origin of the dinosaur extinction". Scientific Reports. 11 (1): 3803. arXiv:2102.06785. Bibcode:2021NatSR..11.3803S. doi:10.1038/s41598-021-82320-2. ISSN 2045-2322. PMC 7884440 Check |pmc= value (help). PMID 33589634 Check |pmid= value (help).
  26. ↑ Ouellette, Jennifer (2021-02-15). "Astronomers: A comet fragment, not an asteroid, killed off the dinosaurs". Ars Technica. Retrieved 2021-02-16.
  27. ↑ Carter, Jamie. "It Was A Comet Strike That Killed The Dinosaurs And It's 10 Times More Likely Than We Thought Say Scientists". Forbes. Retrieved 2021-02-16.
  28. ↑ "Jupiter flung the dinosaur-killing comet into Earth, new study suggests". BBC Science Focus Magazine. Retrieved 2021-02-16.
  29. ↑ Dorminey, Bruce. "How Jupiter Set Off A Chain Of Events That Killed The Dinosaurs". Forbes. Retrieved 2021-02-16.
  30. ↑ "New theory behind Chicxulub impactor that killed the dinosaurs". Harvard Gazette. 2021-02-15. Retrieved 2021-02-16.
  31. ↑ "Sungrazing comet may have caused dinosaur extinction event • Earth.com". www.earth.com. Retrieved 2021-02-16.
  32. ↑ Siraj, Amir; Loeb, Abraham (2020-08-18). "The Case for an Early Solar Binary Companion". The Astrophysical Journal. 899 (2): L24. arXiv:2007.10339. Bibcode:2020ApJ...899L..24S. doi:10.3847/2041-8213/abac66. ISSN 2041-8213. Unknown parameter |s2cid= ignored (help)
  33. ↑ "CfA research on twin suns, 'Oumuamua, and Betelgeuse". Harvard Gazette. 2020-09-04. Retrieved 2021-02-16.
  34. ↑ Ciaccia, Chris (2020-09-01). "The sun's long-lost twin could be in deep space, researchers suggest". Fox News. Retrieved 2021-02-16.
  35. ↑ "Did the Sun have an early binary companion?". Cosmos Magazine. 2020-08-20. Archived from the original on 2020-11-16. Retrieved 2021-02-16.
  36. ↑ Rabie, Passant. "Did the Sun have a twin? New study rewrites the star's early history". Inverse. Retrieved 2021-02-16.
  37. ↑ ICI.Radio-Canada.ca, Zone Science-. "Notre système aurait-il déjà abrité deux soleils? | Mission espace". Radio-Canada.ca (in français). Retrieved 2021-02-16.
  38. ↑ Williams, Matt (2020-08-19). "The Sun Might Have Once Had a Binary Companion Star". Universe Today. Retrieved 2021-02-16.
  39. ↑ Carter, Jamie. "Was Our Sun A Twin? If So Then 'Planet 9' Could Be One Of Many Hidden Planets In Our Solar System". Forbes. Retrieved 2021-02-16.
  40. ↑ Siraj, Amir; Loeb, Abraham (2020). "ShieldSquare Captcha". hkvalidate.perfdrive.com. arXiv:2005.12280. doi:10.3847/2041-8213/aba119. Retrieved 2020-12-07. Unknown parameter |s2cid= ignored (help)
  41. ↑ Wednesday, Caitlyn Buongiorno | Published; July 15; 2020. "Is Planet Nine a black hole or a planet? Harvard scientists suggest a". Astronomy.com. Retrieved 2021-02-16.
  42. ↑ Today, Evan Gough, Universe. "A Radical Hypothesis Says Planet Nine Could Be a Black Hole. Here's How to Find Out". ScienceAlert. Retrieved 2021-02-16.
  43. ↑ Rabie, Passant. "The mysterious case of Planet 9 may finally be resolved". Inverse. Retrieved 2021-02-16.
  44. ↑ "Planet Nine could be a black hole, and a new telescope will tell us". New Atlas. 2020-07-13. Retrieved 2021-02-16.
  45. ↑ Dorminey, Bruce. "Is Planet 9 Actually A Primordial Black Hole?". Forbes. Retrieved 2021-02-16.
  46. ↑ July 2020, Mike Wall 11. "Is 'Planet Nine' actually a grapefruit-sized black hole? Big new telescope could find out". Space.com. Retrieved 2021-02-16.
  47. ↑ "Astronomers Have a Plan to Detect a Possible Black Hole in Our Solar System". Gizmodo. Retrieved 2021-02-16.
  48. ↑ Gough, Evan (2020-07-10). "If Planet 9 is a Primordial Black Hole, We Might Be Able to See Flares When it Consumes Comets". Universe Today. Retrieved 2021-02-16.
  49. ↑ Siraj, Amir; Loeb, Abraham (2019-02-11). "Identifying Interstellar Objects Trapped in the Solar System through Their Orbital Parameters". The Astrophysical Journal. 872 (1): L10. arXiv:1811.09632. Bibcode:2019ApJ...872L..10S. doi:10.3847/2041-8213/ab042a. ISSN 2041-8213. Unknown parameter |s2cid= ignored (help)
  50. ↑ Dorminey, Bruce. "Astronomers Are Tracking Four Potential Interstellar Objects Now In Our Outer Solar System". Forbes. Retrieved 2021-02-16.
  51. ↑ Williams, Matt (2018-11-29). "There Could be Hundreds of Interstellar Asteroids and Comets in the Solar System Right Now That we Could Study". Universe Today. Retrieved 2021-02-16.
  52. ↑ Siraj, Amir; Loeb, Abraham (2020). "ShieldSquare Captcha". hkvalidate.perfdrive.com. arXiv:2001.02681. doi:10.3847/2041-8213/ab74d9. Retrieved 2020-12-07. Unknown parameter |s2cid= ignored (help)
  53. ↑ Siraj, Amir; Loeb, Abraham (2019-06-07). "Probing Extrasolar Planetary Systems with Interstellar Meteors". arXiv:1906.03270 [astro-ph.EP].
  54. ↑ Williams, Matt (2020-02-18). "There Could be Meteors Traveling at a Fraction of the Speed of Light When They Hit the Atmosphere". Universe Today. Retrieved 2021-02-16.
  55. ↑ Siraj, Amir; Loeb, Abraham (2020-08-01). "A real-time search for interstellar impacts on the moon". Acta Astronautica. 173: 53–55. arXiv:1908.08543. Bibcode:2020AcAau.173...53S. doi:10.1016/j.actaastro.2020.04.006. ISSN 0094-5765. Unknown parameter |s2cid= ignored (help)
  56. ↑ Williams, Matt (2019-08-28). "By Continuously Watching the Moon, we Could Detect Interstellar Meteorites". Universe Today. Retrieved 2021-02-16.
  57. ↑ August 2019, Mike Wall 30. "A Telescope Orbiting the Moon Could Spy 1 Interstellar Visitor Per Year". Space.com. Retrieved 2021-02-16.
  58. ↑ Siraj, Amir; Loeb, Abraham (2019-09-19). "Radio Flares from Collisions of Neutron Stars with Interstellar Asteroids". Research Notes of the AAS. 3 (9): 130. arXiv:1908.11440. Bibcode:2019RNAAS...3..130S. doi:10.3847/2515-5172/ab43de. ISSN 2515-5172. Unknown parameter |s2cid= ignored (help)
  59. ↑ Siraj, Amir; Loeb, Abraham (2019-01-18). "'Oumuamua's Geometry Could Be More Extreme than Previously Inferred". Research Notes of the AAS. 3 (1): 15. Bibcode:2019RNAAS...3...15S. doi:10.3847/2515-5172/aafe7c. ISSN 2515-5172.
  60. ↑ Siraj, Amir; Loeb, Abraham (2019-09-19). "An Argument for a Kilometer-scale Nucleus of C/2019 Q4". Research Notes of the AAS. 3 (9): 132. arXiv:1909.07286. Bibcode:2019RNAAS...3..132S. doi:10.3847/2515-5172/ab44c5. ISSN 2515-5172. Unknown parameter |s2cid= ignored (help)
  61. ↑ September 2019, Mike Wall 20. "We Could Chase Down Interstellar Comet Borisov by 2045". Space.com. Retrieved 2021-02-16.
  62. ↑ Siraj, Amir; Loeb, Abraham (2019-06-04). "Discovery of a Meteor of Interstellar Origin". arXiv:1904.07224 [astro-ph.EP].
  63. ↑ "Harvard Undergrad, Professor Identify First Interstellar Meteor, Say It Could Support Theories of Life in Other Solar Systems | News | The Harvard Crimson". www.thecrimson.com. Retrieved 2021-02-16.
  64. ↑ CNN, By AJ Willingham (2019-04-17). "A meteor from another solar system may have hit Earth, and the implications are fascinating". CNN. Retrieved 2021-02-16.
  65. ↑ Katz, Brigit. "An Interstellar Meteor May Have Collided With Earth in 2014". Smithsonian Magazine. Retrieved 2021-02-16.
  66. ↑ Katz, Brigit. "An Interstellar Meteor May Have Collided With Earth in 2014". Smithsonian Magazine. Retrieved 2021-02-16.
  67. ↑ April 2019, Charles Q. Choi 16. "The First Known Interstellar Meteor May Have Hit Earth in 2014". Space.com. Retrieved 2021-02-16.
  68. ↑ Ciaccia, Chris (2019-04-17). "Mysterious interstellar meteor may have slammed into Earth in 2014". Fox News. Retrieved 2021-02-16.
  69. ↑ Siraj, Amir; Loeb, Abraham (2020-10-29). "Observable Signatures of the Ejection Speed of Interstellar Objects from Their Birth Systems". The Astrophysical Journal. 903 (1): L20. arXiv:2010.02214. Bibcode:2020ApJ...903L..20S. doi:10.3847/2041-8213/abc170. ISSN 2041-8213. Unknown parameter |s2cid= ignored (help)
  70. ↑ Williams, Matt (2020-11-07). "Vera Rubin Should be Able to Detect a Couple of Interstellar Objects a Month". Universe Today. Retrieved 2021-02-16.


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