astronomy

QSO J0439+1634

QSO J0439+1634 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 QSO J0439+1634 rather than just read about it. In short: QSO J0439+1634, often referred to by just its coordinates, J0439+1634 or J043947.08+163415.7, is a superluminous quasar, and was, until 20 February 2024, (when it was superseded by QSO J0529-4351) considered the brightest quasar in the early universe with a redshift of z = 6.51. It is approximately 12.873 billion light-years away.

Key takeaways

QSO J0439+1634 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect QSO J0439+1634 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of QSO J0439+1634 from memory before moving on to harder problems.

Reference excerpt

QSO J0439+1634, often referred to by just its coordinates, J0439+1634 or J043947.08+163415.7, is a superluminous quasar, and was, until 20 February 2024, (when it was superseded by QSO J0529-4351) considered the brightest quasar in the early universe with a redshift of z = 6.51. It is approximately 12.873 billion light-years away. The brightness of the quasar is equivalent to about 600 trillion luminosities of the Suns with gravitational lensing, without this effect 11 trillion. The quasar-related supermassive black hole has a mass of 700 million solar masses.

Discovery On April 3, 2018, the ACS/WFC observed and photographed gravitational lensing at the location of the quasar, and further research revealed an extremely bright and large quasar there.

References

Further reading "Astronomers Uncover the Brightest Lensed Quasar in the Early Universe – W. M. Keck Observatory". 9 January 2019. Archived from the original on 2021-06-24. Retrieved 2021-06-21. Mara Johnson-Groh 09 January 2019 (9 January 2019). "Ultrabright Quasar Lit Up the Early Universe". livescience.com. Archived from the original on 2021-06-24. Retrieved 2021-06-21.{{cite web}}: CS1 maint: numeric names: authors list (link) "Гравитационное линзирование: квазар J043947.08+163415.7" [Gravitational lensing: Quasar J043947.08+163415.7]. VideoNews | Последние новости с видео (in Russian). VideoNews. 2019-03-24. Archived from the original on 2021-06-24. Retrieved 2021-06-21.

Illustrations

Worked examples

Example 1 — a first encounter with QSO J0439+1634

Start with the simplest possible case. Write down what QSO J0439+1634 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 QSO J0439+1634 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 QSO J0439+1634 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 QSO J0439+1634

In research: QSO J0439+1634 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 QSO J0439+1634 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: QSO J0439+1634 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 2019, Quasars, Supermassive black holes, so understanding it makes those chapters shorter.
In everyday life: Look for QSO J0439+1634 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 QSO J0439+1634 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what QSO J0439+1634 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 QSO J0439+1634 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is QSO J0439+1634 in simple terms?

Why does QSO J0439+1634 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 QSO J0439+1634?

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 QSO J0439+1634.