Figaro: an experiment for pulsar and variable source studies in the MeV range
Journal Article
·
· Adv. Space Res.; (United States)
The paper presents a large area, balloon borne, NaI(Tl) detector for low-energy gamma rays with temporal signature: Figaro. The main detector is a mosaic of 12 NaI(Tl) tiles 22.5 x 15 x 5 cm, for a total geometric area of 4050 sq cm. In the energy band 140 keV-6 MeV, the expected background counting rate at float altitude is in the range of two to three thousand counts per second. For pulsar analysis the expected 3sigma sensitivity for 5 hours exposition time is 2.5 10 to the -4th ph/sq cm.s.MeV (150-500 keV) 1.5 10 to the -4th ph/sq cm.s.MeV (1-6 MeV). This performance, together with the large effective area and the relatively short duration of a balloon flight, make Figaro particularly suitable for the identification of sources by means of temporal analysis. For objectives in the Northern sky, including the Crab pulsar, a transmediterranean flight is planned for the summer of 1982 a Southern mission is scheduled in Brazil for the fall of 1983 (Vela, PSR 1822-09).
- Research Organization:
- CNR, Istituto di Astrofisica Spaziale, Frascati, Italy
- OSTI ID:
- 6351603
- Journal Information:
- Adv. Space Res.; (United States), Journal Name: Adv. Space Res.; (United States) Vol. 3; ISSN ASRSD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALKALI METAL COMPOUNDS
BACKGROUND RADIATION
COINCIDENCE CIRCUITS
COSMIC RADIO SOURCES
CRAB NEBULA
ELECTROMAGNETIC RADIATION
ELECTRONIC CIRCUITS
GAMMA RADIATION
HALIDES
HALOGEN COMPOUNDS
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
IONIZING RADIATIONS
MEASURING INSTRUMENTS
NEBULAE
PHOSPHORS
PULSARS
RADIATION DETECTORS
RADIATIONS
SCINTILLATION COUNTERS
SODIUM COMPOUNDS
SODIUM IODIDES
SUPERNOVA REMNANTS
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALKALI METAL COMPOUNDS
BACKGROUND RADIATION
COINCIDENCE CIRCUITS
COSMIC RADIO SOURCES
CRAB NEBULA
ELECTROMAGNETIC RADIATION
ELECTRONIC CIRCUITS
GAMMA RADIATION
HALIDES
HALOGEN COMPOUNDS
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
IONIZING RADIATIONS
MEASURING INSTRUMENTS
NEBULAE
PHOSPHORS
PULSARS
RADIATION DETECTORS
RADIATIONS
SCINTILLATION COUNTERS
SODIUM COMPOUNDS
SODIUM IODIDES
SUPERNOVA REMNANTS