astronomy

Tomonori Totani

Tomonori Totani 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 Tomonori Totani rather than just read about it. In short: Tomonori Totani (戸谷友則, Totani Tomonori, born November 21, 1971) is a Japanese astronomer and professor at the University of Tokyo. He is a director of the FastSound Project for the Subaru Telescope, Hawaii.

Key takeaways

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

Reference excerpt

Tomonori Totani (戸谷友則, Totani Tomonori, born November 21, 1971) is a Japanese astronomer and professor at the University of Tokyo. He is a director of the FastSound Project for the Subaru Telescope, Hawaii. He specializes in cosmology, galaxy formation, and high-energy astrophysics.

Early life and career Born in Nagoya, Aichi on November 17, 1971. He received his B.S. (1994) and Ph.D. (1998) from the University of Tokyo, under the supervision of Katsuhiki Sato. After working at the National Astronomical Observatory of Japan (1996-2003) and Princeton University, (2001-2003) he became an assistant professor at Kyoto University in 2003 and an associate professor in 2007. In 2013, he was appointed as a professor at the University of Tokyo. His most recent work has been on the origin of life. His earlier research topics have included dark matter, dark energy, galaxy formation and evolution, supernovae, gamma-ray bursts, fast radio bursts, active galactic nuclei, and cosmic rays.

Publications His most cited publications are:

Totani T. Cosmological fast radio bursts from binary neutron star mergers. Publications of the Astronomical Society of Japan. 2013 Oct 25;65(5):L12. (Cited 269 times, according to Google Scholar ) Totani T, Kawai N, Kosugi G, Aoki K, Yamada T, Iye M, Ohta K, Hattori T. Implications for cosmic reionization from the optical afterglow spectrum of the gamma-ray burst 050904 at z= 6.3. Publications of the Astronomical Society of Japan. 2006 Jun 25;58(3):485-9 (Cited 361 times, according to Google Scholar.) Ota K, Iye M, Kashikawa N, Shimasaku K, Kobayashi M, Totani T, Nagashima M, Morokuma T, Furusawa H, Hattori T, Matsuda Y. Reionization and galaxy evolution probed by z= 7 Lyα emitters. Astrophysical journal. 2008 Apr 10;677(1):1 (Cited 236 times, according to Google Scholar.) Totani T. Cosmological gamma-ray bursts and evolution of galaxies. The Astrophysical Journal Letters. 1997 Sep 10;486(2):L71 (Cited 272 times, according to Google Scholar.) Totani T, Morokuma T, Oda T, Doi M, Yasuda N. Delay time distribution measurement of Type Ia supernovae by the Subaru/XMM-Newton deep survey and implications for the progenitor. Publications of the Astronomical Society of Japan. 2008 Dec 25;60(6):1327-46. (Cited 260 times, according to Google Scholar.)

References

External links Tomonori Totani on X(in Japanese)

Worked examples

Example 1 — a first encounter with Tomonori Totani

Start with the simplest possible case. Write down what Tomonori Totani 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 Tomonori Totani 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 Tomonori Totani 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 Tomonori Totani

In research: Tomonori Totani 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 Tomonori Totani 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: Tomonori Totani is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1971 births, Academic staff of the University of Tokyo, Japanese astronomers, so understanding it makes those chapters shorter.
In everyday life: Look for Tomonori Totani 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 Tomonori Totani in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Tomonori Totani 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 Tomonori Totani out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tomonori Totani in simple terms?

Why does Tomonori Totani 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 Tomonori Totani?

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 Tomonori Totani.