astronomy

PKS 1402+044

PKS 1402+044 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 PKS 1402+044 rather than just read about it. In short: PKS 1402+044 is a quasar located in the constellation of Virgo. It has a redshift of 3.207, estimating the object to be located 11.3 billion light-years away from Earth.

Key takeaways

PKS 1402+044 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect PKS 1402+044 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of PKS 1402+044 from memory before moving on to harder problems.

Reference excerpt

PKS 1402+044 is a quasar located in the constellation of Virgo. It has a redshift of 3.207, estimating the object to be located 11.3 billion light-years away from Earth.

Characteristics PKS 1402+044 is classified as a broad absorption-line quasar (BAL QSO) observed by Sloan Digital Sky Survey with a flat-spectrum radio source. It is also classified a blazar, a type of active galaxy and such produces a powerful astrophysical jet that is shot out into the depths of intergalactic space. The blazar is known to be in its quiescent state, but it shows repeated periods of outbursts that are visible throughout the electromagnetic spectrum. According to observations from Gamma-Ray Blazar Survey and Fermi Gamma-Ray Space Telescope, PKS 1402+044 is found optically variable with >6σ significance, γ-ray detected and more Compton dominated than high synchrotron peaked (HSP) BL Lac objects. Through radio imaging by researchers, the quasar is core-dominated with fluctuating radio emission and radio morphology found smaller in comparison of steep-spectrum quasars. The quasar is radio-loud with straightened jet magnetic fields along its source axis and a lobe field found to have a misaligned orientation.

References

Illustrations

Worked examples

Example 1 — a first encounter with PKS 1402+044

Start with the simplest possible case. Write down what PKS 1402+044 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 PKS 1402+044 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 PKS 1402+044 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 PKS 1402+044

In research: PKS 1402+044 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 PKS 1402+044 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: PKS 1402+044 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, BL Lacertae objects, Blazars, so understanding it makes those chapters shorter.
In everyday life: Look for PKS 1402+044 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 PKS 1402+044 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what PKS 1402+044 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 PKS 1402+044 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is PKS 1402+044 in simple terms?

PKS 1402+044 is a quasar located in the constellation of Virgo. It has a redshift of 3.207, estimating the object to be located 11.3 billion light-years away from Earth.

Why does PKS 1402+044 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 PKS 1402+044?

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 PKS 1402+044.