science

G306.3-0.9

G306.3-0.9 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 G306.3-0.9 rather than just read about it. In short: SNR G306.3-00.9, also called G306.3-0.9 is a supernova remnant located in the constellation Centaurus. It was discovered by the Swift Space Observatory in 2011.

Key takeaways

G306.3-0.9 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect G306.3-0.9 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of G306.3-0.9 from memory before moving on to harder problems.

Reference excerpt

SNR G306.3-00.9, also called G306.3-0.9 is a supernova remnant located in the constellation Centaurus. It was discovered by the Swift Space Observatory in 2011.

Morphology The first observations carried out with the Chandra X-ray Observatory revealed that SNR G306.3-00.9 has a distorted morphology, brighter towards the southwest. The strong radio and X-ray emission from this area suggests either that there is interaction with an interstellar cloud or that it is the consequence of an asymmetric supernova explosion. Emission from highly ionized atoms of magnesium, silicon, sulfur and argon, and suggests that it is the remnant of a Type Ia supernova. Such a spectrum can be described by a non-equilibrium ionization plasma with a temperature below 1 keV. In infrared images at 24 μm, the morphology of the dust grains impacted by the shock wave is shell-shaped, coinciding with the distribution observed in hard X-rays. At 70 μm the dust emission is concentrated in the south, with very little dust in the northwest.

Distance The age of SNR G306.3-00.9 is not well known. It was initially estimated that it could be approximately 2,500 years old—a very young supernova remnant—considering that it was 8,000 parsecs away. A later study, which compares the X-ray absorption column with the distribution of H I decomposed along the line of sight, gives it a distance of around 20,000 parsecs, so its age may be 6000 years and evolutionarily it would be in the late Sedov phase. According to this, the most probable location of SNR G306.3-00.9 is in the outer extension of the Perseus arm. However, according to other models, its age could be considerably older, 12,800 (+2500, − 2500) years.

See also List of supernova remnants 2011 in science

References

Illustrations

Worked examples

Example 1 — a first encounter with G306.3-0.9

Start with the simplest possible case. Write down what G306.3-0.9 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 G306.3-0.9 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 G306.3-0.9 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 G306.3-0.9

In research: G306.3-0.9 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 G306.3-0.9 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: G306.3-0.9 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Centaurus, Supernova remnants, so understanding it makes those chapters shorter.
In everyday life: Look for G306.3-0.9 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 G306.3-0.9 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what G306.3-0.9 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 G306.3-0.9 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is G306.3-0.9 in simple terms?

SNR G306.3-00.9, also called G306.3-0.9 is a supernova remnant located in the constellation Centaurus. It was discovered by the Swift Space Observatory in 2011.

Why does G306.3-0.9 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 G306.3-0.9?

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 G306.3-0.9.