science

G54.1+0.3

G54.1+0.3 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 G54.1+0.3 rather than just read about it. In short: SNR G054.1+00.3, also called G54.1+0.3, 2E 4258 and 2E 1928.3+1846 is a supernova remnant located in the constellation Sagitta. It was identified as a supernova remnant in a study of the galactic plane in the radio continuum at wavelengths of 21 and 11 cm.

Key takeaways

G54.1+0.3 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect G54.1+0.3 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of G54.1+0.3 from memory before moving on to harder problems.

Reference excerpt

SNR G054.1+00.3, also called G54.1+0.3, 2E 4258 and 2E 1928.3+1846 is a supernova remnant located in the constellation Sagitta. It was identified as a supernova remnant in a study of the galactic plane in the radio continuum at wavelengths of 21 and 11 cm.

Morphology SNR G054.1+00.3 is identified as a supernova remnant by its non-thermal radio emission with strong linear polarization. It has a small angular radius (1.5 arcminutes) in radio and X-ray images. Its X-ray emission has been detected with the Einstein, ASCA, ROSAT and Chandra telescopes. In this region of the electromagnetic spectrum it presents different structures that include a ring, an outer nebula and a pulsar, called PSR J1930+1852. The period of this pulsar is 136 ms and it emits very high energy gamma rays. There is a nebula caused by the stellar wind coming from it (PWN). CO observations show that there is no interaction between SNR G054.1+00.3 and the surrounding clouds and that it instead appears to be located within a bubble. Likewise, in a study carried out in the infrared region at 21 μm, features similar to those observed in Cassiopeia A appear, probably attributable to SiO2 grains. Recently formed cold dust (with a temperature of only 27 - 44 K) has also been detected. Various models that consider the amount of dust and its composition suggest that the progenitor star was part of a massive star cluster and had a mass of 15 - 20 solar masses or 16 - 27 solar masses.

Distance SNR G054.1+00.3 is a young supernova remnant. According to various studies, it has an age between 2100 and 3600 years, between 1500 and 3000 years, or 1700 years. On the other hand, the distance at which it is located is not well known either. Various works place this supernova remnant at a distance between 5,000 and 10,000 parsecs; a commonly accepted value is 6200 (+3800, -1200) parsecs.

See also List of supernova remnants Lists of astronomical objects

References

Illustrations

Worked examples

Example 1 — a first encounter with G54.1+0.3

Start with the simplest possible case. Write down what G54.1+0.3 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 G54.1+0.3 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 G54.1+0.3 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 G54.1+0.3

In research: G54.1+0.3 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 G54.1+0.3 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: G54.1+0.3 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Sagitta, Supernova remnants, so understanding it makes those chapters shorter.
In everyday life: Look for G54.1+0.3 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 G54.1+0.3 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what G54.1+0.3 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 G54.1+0.3 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is G54.1+0.3 in simple terms?

Why does G54.1+0.3 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 G54.1+0.3?

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 G54.1+0.3.