astronomy

PSR J0002+6216

PSR J0002+6216 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 PSR J0002+6216 rather than just read about it. In short: PSR J0002+6216, also dubbed the Cannonball Pulsar, is a pulsar discovered by the Einstein@Home project in 2017. It is one of the fastest moving pulsars known, and has moved 53 ly (5.0×1014 km; 3.1×1014 mi) away from the location of its formation supernova, where the remaining supernova nebula, CTB 1 (Abell 85), is.

Key takeaways

PSR J0002+6216 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect PSR J0002+6216 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of PSR J0002+6216 from memory before moving on to harder problems.

Reference excerpt

PSR J0002+6216, also dubbed the Cannonball Pulsar, is a pulsar discovered by the Einstein@Home project in 2017. It is one of the fastest moving pulsars known, and has moved 53 ly (5.0×1014 km; 3.1×1014 mi) away from the location of its formation supernova, where the remaining supernova nebula, CTB 1 (Abell 85), is. Due to its speed in traversing the interstellar medium, at 1,127 km/s (700 mi/s), it is leaving a 13 ly (1.2×1014 km; 7.6×1013 mi) long wake tail and is traveling fast enough to leave the Milky Way galaxy. The pulsar is currently 6,500 ly (6.1×1016 km; 3.8×1016 mi) away in the Cassiopeia constellation. The star rotates at a rate of 8.6682 times a second. There is bow-shock pulsar wind nebula (PWN) associated with PSR J0002+6216.

References

"Spotted: One of the Fastest Pulsars Ever Seen". SciShow News. 29 March 2019. PBS. Sarah Lewin (23 March 2019). "Whirling 'Cannonball' Pulsar Flees Supernova Site at Epic Speed". Space.com. Monica Young (22 March 2019). "60-Second Astro News: Cannonball Pulsar & Mapping a Star from Afar". Sky & Telescope.

External links AstroSurf, Abell 85 (CTB 1)

Illustrations

Worked examples

Example 1 — a first encounter with PSR J0002+6216

Start with the simplest possible case. Write down what PSR J0002+6216 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 PSR J0002+6216 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 PSR J0002+6216 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 PSR J0002+6216

In research: PSR J0002+6216 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 PSR J0002+6216 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: PSR J0002+6216 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cassiopeia (constellation), Pulsars, Variable star stubs, so understanding it makes those chapters shorter.
In everyday life: Look for PSR J0002+6216 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 PSR J0002+6216 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what PSR J0002+6216 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 PSR J0002+6216 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is PSR J0002+6216 in simple terms?

Why does PSR J0002+6216 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 PSR J0002+6216?

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 PSR J0002+6216.