astronomy

WISEA J142040.84+065059.8

WISEA J142040.84+065059.8 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 WISEA J142040.84+065059.8 rather than just read about it. In short: WISEA J142040.84+065059.8 also known as J142040.86+065059.5, is a radio galaxy located in the constellation of Virgo. The redshift of the object is (z) 0.237 and it was first discovered as a discrete radio source from the Molonglo Reference Catalogue by astronomers in February 1981, where it was designated as MRC 1418+070.

Key takeaways

WISEA J142040.84+065059.8 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect WISEA J142040.84+065059.8 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of WISEA J142040.84+065059.8 from memory before moving on to harder problems.

Reference excerpt

WISEA J142040.84+065059.8 also known as J142040.86+065059.5, is a radio galaxy located in the constellation of Virgo. The redshift of the object is (z) 0.237 and it was first discovered as a discrete radio source from the Molonglo Reference Catalogue by astronomers in February 1981, where it was designated as MRC 1418+070. It is categorized as a blazar and also a quasar.

Description WISEA J142040.84+065059.8 is a red luminous galaxy residing as the brightest cluster galaxy (BCG) of the galaxy cluster, WHL J142040.9+065059 with 13 confirmed galaxy member candidates. The r-band magnitude of the galaxy has been estimated as 17.45 magnitude. Its absolute magnitude has been estimated as -22.89. A supermassive black hole is present in the center of the galaxy with a mass of 8.64 M☉. The nucleus is active and has been classified as a bent-tailed radio galaxy of Fanaroff-Riley Class Type I subtype or an X-shaped radio galaxy. The total radio flux density has been calculated as 463.00 mJy by the NRAO VLA Sky Survey (NVSS) at 1.4 GHz frequencies. There is a radio jet with the jet opening angle estimated as 163.6° and the jet curvature radius is 52.5 arcseconds. The radio logarithmic luminosity is 26.07 W Hz−1. The largest angular size of the source is 75 arcseconds whereas the largest linear size is 292.0 kiloparsecs. The total radio power is 90.34 × 1024 WHz−1. It is a weak blazar with a compact steep spectrum (CSS) source. The total flux density is 21.6 mJy and it has a core-jet structure with the core flux density being estimated to be 11.8 mJy. The major axis position angle of the source is 151°. It is also a steep spectrum radio quasar, mainly characterized by its steep radio spectrum. A study published in 2015, has found it is an S-shaped radio galaxy with a source extent of 0.19 kiloparsecs. There is a possibility it might be a dual active galactic nucleus (AGN) candidate with both redshifted and blueshifted doubly ionized oxygen emission lines having a velocity offset of 253 kilometers per seconds.

References

External links WISEA J142040.84+065059.8 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

Illustrations

Worked examples

Example 1 — a first encounter with WISEA J142040.84+065059.8

Start with the simplest possible case. Write down what WISEA J142040.84+065059.8 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 WISEA J142040.84+065059.8 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 WISEA J142040.84+065059.8 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 WISEA J142040.84+065059.8

In research: WISEA J142040.84+065059.8 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 WISEA J142040.84+065059.8 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: WISEA J142040.84+065059.8 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Astronomical objects discovered in 1981, Blazars, so understanding it makes those chapters shorter.
In everyday life: Look for WISEA J142040.84+065059.8 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 WISEA J142040.84+065059.8 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what WISEA J142040.84+065059.8 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 WISEA J142040.84+065059.8 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is WISEA J142040.84+065059.8 in simple terms?

Why does WISEA J142040.84+065059.8 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 WISEA J142040.84+065059.8?

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 WISEA J142040.84+065059.8.