astronomy

Nick Kaiser

Nick Kaiser 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 Nick Kaiser rather than just read about it. In short: Nicholas Kaiser (15 September 1954 – 13 June 2023) was a British cosmologist. He was the son of Thomas Reeve Kaiser.

Key takeaways

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

Reference excerpt

Nicholas Kaiser (15 September 1954 – 13 June 2023) was a British cosmologist. He was the son of Thomas Reeve Kaiser.

Life and career Kaiser was brought up in Sheffield and attended King Edward VII school from 1966 until 1973. He received his Bachelor's in physics at Leeds University in 1978, and his Part III in maths at University of Cambridge in 1979. He obtained his PhD in astronomy, also at the University of Cambridge, under the supervision of Martin Rees. After postdoctoral positions at University of California, Berkeley, University of California, Santa Barbara, University of Sussex, and University of Cambridge, Kaiser was Canadian Institute for Theoretical Astrophysics Professor at the University of Toronto (1988–1997). In 1998 he moved to become Professor at the Institute for Astronomy of the University of Hawaiʻi. From 2017 to 2022 he was Professor at École Normale Supérieure in Paris. Kaiser was elected a Fellow of the Royal Society in 2008. Kaiser died of heart failure on 13 June 2023, at the age of 68.

Works Kaiser made major contributions to cosmology:

He made the first calculation of the polarization of the cosmic microwave background (Kaiser 1983); Explained the higher bias of cluster galaxies relative to the matter field (Kaiser 1984); Made a detailed calculation of the statistics of density peaks in the primordial Universe (Bardeen, Bond, Kaiser & Szalay 1986); Introduced the mathematics of redshift-space distortions (Kaiser 1987); Computed the cosmic halo mass function using excursion set theory (Bond, Cole, Efstathiou & Kaiser 1991); First explained the departures of galaxy cluster scaling relations from simple self-similar models (Kaiser 1991); and Performed the first inversion of shear maps from weak gravitational lensing (Kaiser & Squires 1993). Kaiser wrote articles on details of cosmological distance measures. Kaiser was the initiator and Principal Investigator of the PanSTARRS imaging survey of most of the sky.

Awards and honors Kaiser won numerous awards and honors including:

References

Illustrations

Worked examples

Example 1 — a first encounter with Nick Kaiser

Start with the simplest possible case. Write down what Nick Kaiser 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 Nick Kaiser 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 Nick Kaiser 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 Nick Kaiser

In research: Nick Kaiser 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 Nick Kaiser 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: Nick Kaiser is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1954 births, 2023 deaths, Academic staff of the University of Toronto, so understanding it makes those chapters shorter.
In everyday life: Look for Nick Kaiser 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 Nick Kaiser in 20 minutes

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

Frequently asked questions

What is Nick Kaiser in simple terms?

Nicholas Kaiser (15 September 1954 – 13 June 2023) was a British cosmologist. He was the son of Thomas Reeve Kaiser.

Why does Nick Kaiser 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 Nick Kaiser?

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 Nick Kaiser.