science

VIK J2348-3054

VIK J2348-3054 is a science 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 VIK J2348-3054 rather than just read about it. In short: VIK J2348-3054 is a high-redshift luminous quasar in the epoch of reionization located at a redshift distance of z=6.9018. Despite it being located in a region where there should be an overdensity of Lyman-alpha emitter (LAEs) galaxies for several mpc, there is a lack of LAEs for at least 5.15 mpc.

Key takeaways

VIK J2348-3054 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect VIK J2348-3054 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of VIK J2348-3054 from memory before moving on to harder problems.

Reference excerpt

VIK J2348-3054 is a high-redshift luminous quasar in the epoch of reionization located at a redshift distance of z=6.9018. Despite it being located in a region where there should be an overdensity of Lyman-alpha emitter (LAEs) galaxies for several mpc, there is a lack of LAEs for at least 5.15 mpc. In fact, the nearest galaxy capable of forming new stars was located some 16.8 million light years away from this galaxy. This means that VIK J2348-3054 is most likely suppressing star formation in the galaxies in its immediate vicinity. This lack of LAE galaxies is unusual for luminous quasars like VIK J2348-3054 because high-red shift quasars are usually found in dense regions of space. The quasar suppresses star formation in those surrounding galaxies by illuminating and heating up the gas in those galaxies with intense radiation. In order for stars to from, they need cold gas clouds to collapse under their own gravity. The central supermassive black hole (SMBH) powering the quasar has a mass of 2 billion solar masses, meaning that it has accumulated a substantial amount of material in a relatively short amount of time period, in about 770 million years since the Big Bang.

Spectra The quasar spectra reveals sharp peaks at 9500 Å and 9600 Å which is as absorption in the intergalactic medium (IGM) shortward of the Lyα line in the quasar. It also has strong emission lines and a continuum blueward of the C iv emission line that is partly absorbed, suggesting that VIK J2348-3054 is a broad absorption line (BAL) quasar. Spectra also show that it has been enriched with iron and magnesium. This means that iron could be produced in large amounts by population lll stars with masses of around 100 solar masses which are extremely metal poor. The quasar host may have undergone a significant period of iron enrichment before the cosmic age around 0.8 billion years ago by supernova.

References

Illustrations

Worked examples

Example 1 — a first encounter with VIK J2348-3054

Start with the simplest possible case. Write down what VIK J2348-3054 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 VIK J2348-3054 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 VIK J2348-3054 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 VIK J2348-3054

In research: VIK J2348-3054 appears in science 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 VIK J2348-3054 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: VIK J2348-3054 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Quasars, Sculptor (constellation), so understanding it makes those chapters shorter.
In everyday life: Look for VIK J2348-3054 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 VIK J2348-3054 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what VIK J2348-3054 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 VIK J2348-3054 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is VIK J2348-3054 in simple terms?

Why does VIK J2348-3054 matter?

Because it connects several science 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 VIK J2348-3054?

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 VIK J2348-3054.