astronomy

PKS 0053−015

PKS 0053−015 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 0053−015 rather than just read about it. In short: PKS 0053−015 is a radio galaxy located in the constellation of Cetus. The redshift of the galaxy is (z) 0.038 and it was first discovered by astronomers conducting the Parkes Catalogue survey at the Parkes Observatory in December 1966.

Key takeaways

PKS 0053−015 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 0053−015 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of PKS 0053−015 from memory before moving on to harder problems.

Reference excerpt

PKS 0053−015 is a radio galaxy located in the constellation of Cetus. The redshift of the galaxy is (z) 0.038 and it was first discovered by astronomers conducting the Parkes Catalogue survey at the Parkes Observatory in December 1966. This galaxy is one of the two narrow-angle tail (NAT) radio galaxies alongside PKS 0053−016 to be members of the Abell 119 galaxy cluster. In the Uppsala General Catalogue, it is designated as UGC 583.

Description PKS 0053−015 is classified to be an elliptical galaxy. It is known to contain a narrow-angle tail source. When observed, it has two jets of different surface brightness that is found to roughly bend towards the direction of south. Further imaging at 1.4 GHz frequencies, also found the jets are found to have a short appearance with an orientation of northeast to southwest direction. Evidence also showed the northeast jet is shown as bending by around 90 degrees in the south to form a low surface brightness lobe, subsequently merging with the radio emission. Radio imaging made at higher resolution at 4.9 GHz frequencies, found the southwest jet is described as well-collimated for around 20 arcseconds before widening up to form a lobe feature characterized by several wiggles and bends. The northeast jet is described as straight from the start, but becomes sharply bending by 90 degrees then forms a large lobe feature. Unlike the southwest jet, this jet is slightly more brighter and is found surrounded by a cocoon of low brightness. Evidence also found the surface brightness of this jet is found to decrease faster compared to the southwest jet. The radio core of the source is unresolved but it has a bright appearance. There is also evidence of fractional polarization of around four percent in the central nucleus, which it turn oscillates to around the range of between 10 and 35 percent along the two lobes. Studies published in 2017, has discovered there is a filament feature with a narrow flat radio spectrum, shown as coinciding together with the southwest jet. The central supermassive black hole of the galaxy is estimated to be 8.98 solar masses based on a study published in December 2002. The total apparent R-band magnitude of the galaxy is estimated as -24.03.

References

External links

PKS 0053−015 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images PKS 0053−015 on SIMBAD

Illustrations

Worked examples

Example 1 — a first encounter with PKS 0053−015

Start with the simplest possible case. Write down what PKS 0053−015 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 0053−015 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 0053−015 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 0053−015

In research: PKS 0053−015 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 0053−015 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 0053−015 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Astronomical objects discovered in 1966, Cetus (constellation), so understanding it makes those chapters shorter.
In everyday life: Look for PKS 0053−015 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 0053−015 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what PKS 0053−015 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 0053−015 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is PKS 0053−015 in simple terms?

Why does PKS 0053−015 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 0053−015?

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 0053−015.