1 / 36

BATSE : The History and Legacy Gerald J. (Jerry) Fishman Jacobs Technologies, Inc.

BATSE : The History and Legacy Gerald J. (Jerry) Fishman Jacobs Technologies, Inc. NASA - Marshall Space Flight Center Huntsville, AL, USA GRB Symposium Marbella, Spain October 8, 2012. 1973 Los Alamos Discovery of GRBs First Public Presentation: . AAS Meeting – Columbus, Ohio

natala
Télécharger la présentation

BATSE : The History and Legacy Gerald J. (Jerry) Fishman Jacobs Technologies, Inc.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. BATSE: The History and Legacy Gerald J. (Jerry) Fishman Jacobs Technologies, Inc. NASA - Marshall Space Flight Center Huntsville, AL, USA GRB Symposium Marbella, Spain October 8, 2012

  2. 1973 • Los Alamos Discovery of GRBs • First Public Presentation: • AAS Meeting – Columbus, Ohio • Huntsville Gamma-ray Astronomy Group - Decided to Build a • Large-area Detector Balloon Experiment • to Detect Weak GRBs

  3. 1974 -1977 Detector Development & Early Balloon Flights

  4. A Large Area Detector Tray (~1800cm2) made from NaI (Tl) Crystal Pieces

  5. Group of Seven Detectors for Balloon Flight Observations of GRBs.

  6. Three Detectors Viewing the Same Direction Detectors Viewing Different Directions on a Balloon Flight Gondola • Deficiency of Weak GRBs was Observed

  7. GRO Announcement of Opportunity (AO) - Proposed Transient Event Monitor (TEM)- Twelve Detectors (Dodecahedron) - Partial Selection – 6 Det. 1977-1978 (six on top & six on bottom of spacecraft) (only on bottom of spacecraft)

  8. After Approval : - TEM Name changed to BATSE - Requested Eight Detectors (Octahedron - Four on top & bottom) 1979 -1980

  9. Later Removed During Negotiation

  10. - GRSE Experiment Removed from GRO- Spectroscopy Detectors added to BATSE, one in each detector module 1981 - 1982

  11. Gamma-Ray Observatory (GRO)

  12. 1982 -1988 BATSE Detector Development & Balloon Flights

  13. BATSE LAD NaI Detector Element: 50 cm dia; 2025 cm2

  14. Preparing Four BATSE LAD NaI Prototype Detectors on a Gondola for Balloon Flight

  15. BATSE Prototype Balloon-flight Gondola Ready for Launch

  16. 1982 - 1988 BATSE Detector Modules: BATSE Design, Fabrication, Testing & Calibration at NASA-MSFC

  17. 1989 Integration of Experiments on GRO Spacecraft in California

  18. 1990 Radioactive Source Survey of BATSE on the GRO Spacecraft

  19. 1990 GRO P.I.s at the GRO Instruments TRW Facility, Redondo Beach CA

  20. April 4, 1991 Shuttle launch, STS-37 Gamma-Ray Observatory (GRO) (Operational: re-named CGRO) c

  21. GRO Spacecraft – Still Attached to Shuttle Arm, Just Prior to Deployment

  22. GRO Spacecraft Drifting Away (Note reflection of Linda Godwin’s hands holding camera)

  23. STS-37Flight Crew After GRO DeploymentIn Orbit c

  24. BATSE - Unique • First Large Experiment Designed for • GRB Studies: • Full-sky • Large Area • Good Sensitivity for Epeakof Most GRBs • Moderate Spectral Capabilities • (good enough for most time/spectral correlations and time resolved spectral studies)

  25. BATSE(cont.) • Largest sample (2704 GRBs); full-sky, 9+ years in operation • Well- characterized, full-sky instrument • Likely will not be exceeded for several decades • Led to GCN Network • Many Hundreds of Papers Based on BATSE Observations; >60 Ph.D. theses

  26. 1991-2000 A Few Major BATSE GRB Results

  27. Global properties of GRB Distributions: • Intensity Distribution & Sky Distribution • Not consistent with any Galactic Distribution, nearby extra-gal objects, incl. large clusters • Strong Indications that GRBs were at cosmological distances (Although BeppoSAX nailed it) • Comprehensive Temporal/Spectral Studies • Two Populations of GRBs • Rapid GRB Response: beginning of Bacodine/GCN - led to breakthrough quick, wide-field observations

  28. CGRO on Cover of Nature, Jan. 9, 1992

  29. Diversity of GRB Profiles & Coupled Spectral / Temporal Properties

  30. Two Distinct subclasses of –ray bursts: short/hard long/soft Hard Spectra Softer Spectra 0.3 s 30 s

  31. Hardness Ratio Duration of Gamma-ray Bursts (sec)

  32. RS - Galactic, Nearby RD - Galactic, Far away

  33. -3/2 Power-law Observed Frequency of GRBs

  34. Galactic Coordinates Apr. 1991 – May 2000

  35. RS - Galactic, Nearby RD - Galactic, Far away Observed Distribution i.e. Not Galactic

  36. End

More Related