physics

Raghunathan Srianand

Raghunathan Srianand is a physics 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 Raghunathan Srianand rather than just read about it. In short: Raghunathan Srianand (born February 1, 1969) is an Indian cosmologist, astrophysicist and a scientist at the Inter-University Centre for Astronomy and Astrophysics (IUCAA). Known for his research on redshift evolution on the cosmic microwave background radiation, Srianand is a member of the International Astronomical Union and the Perimeter Institute for Theoretical Physics.

Key takeaways

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

Reference excerpt

Raghunathan Srianand (born February 1, 1969) is an Indian cosmologist, astrophysicist and a scientist at the Inter-University Centre for Astronomy and Astrophysics (IUCAA). Known for his research on redshift evolution on the cosmic microwave background radiation, Srianand is a member of the International Astronomical Union and the Perimeter Institute for Theoretical Physics. Focusing his work on observational and theoretical astrophysics, he is known to have assisted in widening the understanding of the bounds on the variation of fundamental constants using the absorption line spectra of quasars. High-z proto-galaxies, time and space variation of fundamental constants, redshift evolution of the CMB temperature and formation and evolution of IGM have been some of the areas of his research. His studies have been documented by way of a number of articles and Google Scholar, an online article repository of scientific articles, has listed 306 of them. The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards, for his contributions to physical sciences in 2008.

Selected bibliography S. Muzahid, Jane C. Charlton, Daisuke Nagai, Joop Schaye, R. Srianand (2017). "Discovery of an HI-rich Gas Reservoir in the Outskirts of SZ-effect Selected Clusters". The Astrophysical Journal. 846 (1): L8. arXiv:1708.02600. Bibcode:2017ApJ...846L...8M. doi:10.3847/2041-8213/aa8559. S2CID 118943294.{{cite journal}}: CS1 maint: multiple names: authors list (link) R. Dutta, R. Srianand, Neeraj Gupta, Ravi Joshi (2017). "H i 21-cm absorption from z ∼ 0.35 strong Mg ii absorbers". Monthly Notices of the Royal Astronomical Society. 468 (1): 1029–1037. arXiv:1703.00457. Bibcode:2017MNRAS.468.1029D. doi:10.1093/mnras/stx538. S2CID 119069958.{{cite journal}}: CS1 maint: multiple names: authors list (link) M. Vivek, R. Srianand, N. Gupta (2015). "Transient C IV Broad Absorption Lines in radio detected QSOs". Monthly Notices of the Royal Astronomical Society. 455 (1): 136–149. arXiv:1509.08471. Bibcode:2016MNRAS.455..136V. doi:10.1093/mnras/stv2240. S2CID 118700592.{{cite journal}}: CS1 maint: multiple names: authors list (link)

Worked examples

Example 1 — a first encounter with Raghunathan Srianand

Start with the simplest possible case. Write down what Raghunathan Srianand claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, 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 Raghunathan Srianand 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 Raghunathan Srianand 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 Raghunathan Srianand

In research: Raghunathan Srianand appears in physics 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 Raghunathan Srianand 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: Raghunathan Srianand is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1969 births, 21st-century Indian physicists, Academic staff of Savitribai Phule Pune University, so understanding it makes those chapters shorter.
In everyday life: Look for Raghunathan Srianand 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 Raghunathan Srianand in 20 minutes

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

Frequently asked questions

What is Raghunathan Srianand in simple terms?

Why does Raghunathan Srianand matter?

Because it connects several physics 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 Raghunathan Srianand?

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 Raghunathan Srianand.