astronomy

PSO J030947.49+271757.31

PSO J030947.49+271757.31 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 PSO J030947.49+271757.31 rather than just read about it. In short: PSO J030947.49+271757.31, sometimes shortened to PSO J0309+27, is the most distant known blazar, as of 2020. It lies in Aries.

Key takeaways

PSO J030947.49+271757.31 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect PSO J030947.49+271757.31 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of PSO J030947.49+271757.31 from memory before moving on to harder problems.

Reference excerpt

PSO J030947.49+271757.31, sometimes shortened to PSO J0309+27, is the most distant known blazar, as of 2020. It lies in Aries. The blazar has a redshift of 6.1, meaning its light took almost 13 billion years to reach Earth, when the universe was about 1 billion years old, and its present comoving distance is about 30 billion light-years. It was discovered by a team of researchers led by Silvia Belladitta, a Ph.D. student at the University of Insubria, working for the Italian National Institute for Astrophysics (INAF) in Milan, Italy.

References

Further reading S. Belladitta; A. Moretti; A. Caccianiga; C. Spingola; P. Severgnini; R. Della Ceca; G. Ghisellini; D. Dallacasa; T. Sbarrato; C. Cicone; L. P. Cassarà; M. Pedani (6 February 2020), "The first blazar observed at z>6", Astronomy & Astrophysics, 635: L7, arXiv:2002.05178, Bibcode:2020A&A...635L...7B, doi:10.1051/0004-6361/201937395 Ferreira, Becky (March 9, 2020). "An Ancient Black Hole as Heavy as a Billion Suns Is Pointed Right At Us". Vice Motherboard. The blazar—powered by an extremely bright black hole that can blast a hole through galaxies—is the most ancient ever discovered, sending radio signals from the early universe Matt Williams (March 19, 2020). "Blazar Found Blazing When the Universe was Only a Billion Years Old". Universe Today. Monzon, Inigo (March 12, 2020). "Ancient Supermassive Black Hole Aiming At Earth With Particle Beam". International Business Times.

Worked examples

Example 1 — a first encounter with PSO J030947.49+271757.31

Start with the simplest possible case. Write down what PSO J030947.49+271757.31 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 PSO J030947.49+271757.31 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 PSO J030947.49+271757.31 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 PSO J030947.49+271757.31

In research: PSO J030947.49+271757.31 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 PSO J030947.49+271757.31 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: PSO J030947.49+271757.31 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aries (constellation), Astronomical objects discovered in 2020, Blazars, so understanding it makes those chapters shorter.
In everyday life: Look for PSO J030947.49+271757.31 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 PSO J030947.49+271757.31 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what PSO J030947.49+271757.31 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 PSO J030947.49+271757.31 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is PSO J030947.49+271757.31 in simple terms?

PSO J030947.49+271757.31, sometimes shortened to PSO J0309+27, is the most distant known blazar, as of 2020. It lies in Aries.

Why does PSO J030947.49+271757.31 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 PSO J030947.49+271757.31?

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 PSO J030947.49+271757.31.