astronomy

Marek Sikora (astronomer)

Marek Sikora (astronomer) 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 Marek Sikora (astronomer) rather than just read about it. In short: Marek Sikora is a Polish astronomer. He achieved his Habilitation of astrophysics in 1990 from University of Warsaw.

Key takeaways

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

Reference excerpt

Marek Sikora is a Polish astronomer. He achieved his Habilitation of astrophysics in 1990 from University of Warsaw. He received the title of professor in 1999. Currently he works as a professor in the Centrum Astronomiczne im. Mikołaja Kopernika PAN, Polish Academy of Sciences in Warsaw. He is interested mainly high-energy astrophysics, astrophysical jets, the nuclei of active galaxies, and sources of cosmic radiation.

Published works 2008, 3C 454.3 Reveals the structure and physics of its Blazar zone, The Astrophysical Journal, 675, pp. 71, 2008 Marek Jan Sikora, Rafal Moderski, Gregory Maria Madejski 2008 Multiwavelength Observations of the Powerful Gamma-Ray Quasar PKS 1510-089: Clues on the Jet Composition, The Astrophysical Journal, 672, pp. 787, 2008 Marek Jan Sikora, Rafal Moderski, Kataoka et al. (Sikora, M .; Moderski, R.) 2008 Radio-loudness of Active Galaxies and the Black Hole Evolution, New Astronomy Reviews, 51, pp. 891, 2008 Marek Jan Sikora, Lukasz Stawarz, JP Lasota 2007 Radio-loudness of active galactic nuclei: observational facts and Theoretical implications, The Astrophysical Journal, 658, pp. 815, 2007 Marek Jan Sikora, Lukasz Stawarz, JP Lasota 2007 On Magnetic Field in Broad-line Blazars, Proceedings "Recontre de Moriond" 2007 Marek Jan Sikora, Rafal Moderski, 2007, Radio loudness of AGNs: host galaxy morphology and the spin paradigm Proceedings of "Extragalactic Jets: Theory and Observations from Radio is Gamma Rays", 2007, Marek Jan Sikora, Lukasz Stawarz, JP Lasota 2006 Dynamics and high-energy emission of the flaring HST-1 wick in the M87 jet, Monthly Noticies of the RAS, 370, p. 981, 2006 Marek Jan Sikora, Lukasz Stawarz, F. Aharonian, Kataoka J. Ostrowski M., Siemiginowska A. 2005 Klein-Nishina effects in the spectra of non-thermal sources immersed in external radiation fields, Monthly Noticies of the RAS, 363, p. 954, 2005 Marek Jan Sikora, Rafal Moderski, Coppi PS Aharonian, F.

References

Illustrations

Marek Sikora (astronomer): Marek Sikora — Marek Sikora

Worked examples

Example 1 — a first encounter with Marek Sikora (astronomer)

Start with the simplest possible case. Write down what Marek Sikora (astronomer) 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 Marek Sikora (astronomer) 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 Marek Sikora (astronomer) 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 Marek Sikora (astronomer)

In research: Marek Sikora (astronomer) 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 Marek Sikora (astronomer) 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: Marek Sikora (astronomer) is common in secondary-school and first-year university syllabi. It links to neighbouring topics 20th-century Polish astronomers, 21st-century Polish astronomers, European astronomer stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Marek Sikora (astronomer) 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 Marek Sikora (astronomer) in 20 minutes

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

Frequently asked questions

What is Marek Sikora (astronomer) in simple terms?

Marek Sikora is a Polish astronomer. He achieved his Habilitation of astrophysics in 1990 from University of Warsaw.

Why does Marek Sikora (astronomer) 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 Marek Sikora (astronomer)?

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 Marek Sikora (astronomer).