astronomy

Solar Radiation and Thermospheric Satellite

Solar Radiation and Thermospheric Satellite is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Solar Radiation and Thermospheric Satellite rather than just read about it. In short: Solar Radiation and Thermospheric Satellite (SRATS), also knows as Taiyo ("Sun" in Japanese) or Shinsei-3, was a space probe developed by the Institute of Space and Astronautical Science (ISAS) at the University of Tokyo. The probe was launched on February 24, 1975, from Kagoshima Space Center by M-3C-2 rocket.

Key takeaways

Solar Radiation and Thermospheric Satellite belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Solar Radiation and Thermospheric Satellite to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Solar Radiation and Thermospheric Satellite from memory before moving on to harder problems.

Reference excerpt

Solar Radiation and Thermospheric Satellite (SRATS), also knows as Taiyo ("Sun" in Japanese) or Shinsei-3, was a space probe developed by the Institute of Space and Astronautical Science (ISAS) at the University of Tokyo. The probe was launched on February 24, 1975, from Kagoshima Space Center by M-3C-2 rocket. Its mission was focused on upper atmospheric physics, X-ray and UV solar radiation, and the Earth's ionosphere. Taiyo completed its mission before re-entering Earth's atmosphere on June 29, 1980. The satellite had a shape of octagonal cylinder (or prism), weighing 86 kg. It orbited the Earth in an elliptical orbit with a periapsis of 260 km and an apoapsis of 3,140 km, at a 32-degree inclination. The satellite's primary goal was to investigate solar X-rays, ultraviolet radiation, and the distribution of ions and electrons in the Earth's upper atmosphere.

Instruments

Taiyo had seven science instruments:

Solar X-Ray Detector (SXR): Designed to observe solar X-rays in two energy ranges (5.9-9.5 keV, 9.5-11.5 keV) and measure charged particles near the Earth's radiation belts. Lyman-alpha Radiation Monitor (SXU): Measured solar hydrogen Lyman-alpha radiation to study the Sun's chromosphere. Geocoronal and Middle Ultraviolet Radiometers (GMV): This system combined the Middle Ultraviolet Radiometer (MUV), which measured reflected solar light from atmospheric ozone, and the Vacuum Ultraviolet Photon Counter (GUV), which analyzed geocoronal emissions. Bennett Ion Mass Spectrometer (CPI): Examined ion composition in the upper atmosphere, identifying H+, He+, and O+ ions. Retarding Potential Analyzer (RPA): Measured ion density and temperature using voltage sweeps across ion traps. Electron Temperature Probe (TEL): Recorded electron temperature variations, capable of measuring up to 4000 K. Gyro-Plasma Probe (IMP): Analyzed electron density distribution through high-frequency impedance measurements.

Further reading Hirao, Kunio (1975). "The TAIYO Mission". Journal of Geomagnetism and Geoelectricity. 27 (4): 265–270. Bibcode:1975JGG....27..265H. doi:10.5636/jgg.27.265. Retrieved 22 October 2024. Hirao, K. (1976). "Results of observations made by the SRATS (Solar radiation and thermospheric structure) satellite". Space Research XVI; Proceedings of the Open Meetings of Working Groups on Physical Sciences, May 29-June 7, 1975, and Symposium and Workshop on Results from Coordinated Upper Atmosphere Measurement Programs, Varna, Bulgaria, May 29-31, 1975. Berlin, East Germany: Akademie-Verlag GmbH. pp. 235–240. Bibcode:1976spre.conf..235H. Matsuoka, Masaru; Nagai, Fukuo; Ohki, Ken-ichiro (1975). "A solar X-ray detector aboard "TAIYO"". Journal of Geomagnetism and Geoelectricity. 27 (4): 271–277. doi:10.5636/jgg.27.271. Oshio, Takanori; Masuoka, Toshio; Higashino, Ichiro; Watanabe, Norihiko (1975). "An intensity monitor for solar hydrogen Lyman-α radiation (TAIYO SXU)". Journal of Geomagnetism and Geoelectricity. 27 (4): 279–294. doi:10.5636/jgg.27.279. Tohmatsu, Takao; Suzuki, Katsuhisa; Ogawa, Toshihiro (1975). "The atmospheric UV instrumentation for the satellite "TAIYO"". Journal of Geomagnetism and Geoelectricity. 27 (4): 295–301. doi:10.5636/jgg.27.295. Iwamoto, Iwao; Suitz, Takeshi; Fugono, Nobuyoshi (1975). "The Bennett ion mass spectrometer aboard "TAIYO" (CPI)". Journal of Geomagnetism and Geoelectricity. 27 (4): 303–310. Bibcode:1975JGG....27..303I. doi:10.5636/jgg.27.303. Miyazaki, Shigeru (1975). "The retarding potential analyzer aboard the satellite TAIYO". Journal of Geomagnetism and Geoelectricity. 27 (4): 311–320. Bibcode:1975JGG....27..311M. doi:10.5636/jgg.27.311. Oyama, Koh-ichiro; Hirao, Kunio (1975). "Electron temperature probe experiments on the satellite "TAIYO"". Journal of Geomagnetism and Geoelectricity. 27 (4): 321–330. Bibcode:1975JGG....27..321O. doi:10.5636/jgg.27.321. Oya, Hiroshi; Morioka, Akira (1975). "Instrumentation and observations of gyro-plasma probe installed on TAIYO for measurement of ionospheric plasma parameters and low energetic particle effects". Journal of Geomagnetism and Geoelectricity. 27 (4): 331–361. Bibcode:1975JGG....27..331O. doi:10.5636/jgg.27.331.

References

Illustrations

Worked examples

Example 1 — a first encounter with Solar Radiation and Thermospheric Satellite

Start with the simplest possible case. Write down what Solar Radiation and Thermospheric Satellite claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Solar Radiation and Thermospheric Satellite before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Solar Radiation and Thermospheric Satellite ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Solar Radiation and Thermospheric Satellite

In research: Solar Radiation and Thermospheric Satellite appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Solar Radiation and Thermospheric Satellite in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Solar Radiation and Thermospheric Satellite is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1975 in spaceflight, Missions to the Sun, Satellites of Japan, so understanding it makes those chapters shorter.
In everyday life: Look for Solar Radiation and Thermospheric Satellite outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Solar Radiation and Thermospheric Satellite in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Solar Radiation and Thermospheric Satellite means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Solar Radiation and Thermospheric Satellite out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Solar Radiation and Thermospheric Satellite in simple terms?

Why does Solar Radiation and Thermospheric Satellite matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Solar Radiation and Thermospheric Satellite?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Solar Radiation and Thermospheric Satellite.