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LIGO in Mississippi

LIGO in Mississippi. Marco Cavaglià. LIGO Scientific Collaboration Dept. of Physics and Astronomy University of Mississippi. Background picture from http://cgwp.gravity.psu.edu. What is LIGO?. L IGO S cientific C ollaboration =. + …. LIGO =. L aser. I nterferometer.

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LIGO in Mississippi

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  1. LIGO in Mississippi Marco Cavaglià LIGO Scientific Collaboration Dept. of Physics and AstronomyUniversity of Mississippi MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z Background picture from http://cgwp.gravity.psu.edu

  2. What is LIGO? MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  3. LIGO Scientific Collaboration = + … LIGO = Laser Interferometer Gravitational-wave Observatory MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  4. MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  5. ~2.5 hr Two LIGO Observatories Hanford (WA) 4 km + 2 km interferometers Livingston (LA) 4 km interferometer MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  6. Livingston, Louisiana MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  7. ETMY 14 kW Ly Pickoff Port Reflected Port ITMY Lx Input Beam(Laser) RM BS 6 W ITMX ETMX 250 W ~0.2 W Strain Readout(Ly-Lx) Anti-Symmetric Port Interferometer design MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  8. Vacuum equipment MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  9. Core optic suspensions MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  10. Core optics MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  11. The control room Vitor Cardoso(postdoc @ Ole Miss) MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  12. What do we hope to see? MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  13. Gravitational waves Einstein’s General Relativity The spacetime geometry is continuously distorted by the presence of mass (=energy). When masses move rapidly, the spacetime becomes stirred by their motion: ripples start traveling outward with the speed of light MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  14. What is the effect of a gravitational wave? We will experiment on a graduate student MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  15. How do we know that gravitational waves exist? Indirect detection: slow down of a binary pulsar R. Hulse J. Taylor Nobel prize in physics, 1993 John Rowe Animation/Australia Telescope National Facility, CSIRO MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  16. Sources of gravitational waves ♦ Coalescing binary neutron stars or black holes ♦ Spinning neutron stars ♦ Gravitational bursts (e.g. supernovae) ♦ Big bang gravitational echo MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  17. Sources of gravitational waves ♦ Coalescing binary neutron stars or black holes ♦ Spinning neutron stars ♦ Gravitational bursts (e.g. supernovae) ♦ Big bang gravitational echo Picture credit: NASA/CXC/AIfA; NRAO/VLA/NRL MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  18. Sources of gravitational waves ♦ Coalescing binary neutron stars or black holes ♦ Spinning neutron stars ♦ Gravitational bursts (e.g. supernovae) ♦ Big bang gravitational echo Picture credit: NASA/HST/STScI MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  19. Sources of gravitational waves ♦ Coalescing binary neutron stars or black holes ♦ Spinning neutron stars ♦ Gravitational bursts (e.g. supernovae) ♦ Big bang gravitational echo Picture credit: NASA/HST/STScI MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  20. Sources of gravitational waves ♦ Coalescing binary neutron stars or black holes ♦ Spinning neutron stars ♦ Gravitational bursts (e.g. supernovae) ♦ Big bang gravitational echo Picture credit: NASA/WMAP MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  21. LIGO sensitivity S2: Feb.- Apr. 2003 59 days BNS reach ~ 1Mpc S3: Oct. ‘03 - Jan. ‘04 70 days BNS reach ~ 3Mpc Science Requirement. document (1995) Distance Earth-Sun (93.2 million miles)… …stretches by a fraction of an atom! S4: Feb. - Mar. 2005 30 days BNS reach ~ 15Mpc S5: Nov 2005 – Current MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  22. LIGO is so sensitive that it feels… ♦ Cars and trucks ♦ Airplanes ♦ Sea waves ♦ Earthquakes… MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  23. LIGO outreach MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  24. LIGO Science Education Center MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  25. Photos by Ana Sousa MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  26. http://www.ligo-la.caltech.edu MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  27. MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  28. The Einstein@home Project Sun Oct 8 2007 17:12 UTC http://www.einsteinathome.org MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

  29. Thank you! MAP Fall Meeting – Canton MS, Nov. 3rd, 2007LIGO-G070633-00-Z

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