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Collapse of a star
- They are formed by the collapse of a star with a mass 10–25 times that of the Sun. The density of the interior of a magnetar is such that a tablespoon of its substance would have a mass of over 100 million tons.
en.wikipedia.org/wiki/Magnetar
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How do magnetars come into existence?
What is a magnetar & how does it work?
What are magnetars & why are they so strong?
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The existence of magnetars was proposed in 1992 by Robert Duncan and Christopher Thompson. [3] Their proposal sought to explain the properties of transient sources of gamma rays, now known as soft gamma repeaters (SGRs).
- Magnetic Magnetars
- A Magnetar Is Extreme in Many Ways
- What Gives A Magnetar Its Magnetism?
- Cosmic Lighthouses
- First Magnetar Detection A Mystery
- Are Magnetars Responsible For Fast Radio Bursts?
Can you imagine a magnet so powerful that it could wipe every credit card on Earth from a distance halfway to the moon? That is how strong the magnetic field of a magnetar is! A magnetar is an exotic type of neutron star, its defining feature that it has an ultra-powerful magnetic field. The field is about 1,000 times stronger than a normal neutron...
Apart from these ultra-powerful magnetic fields, magnetars also release vast amounts of energy in the form of flares, X-rays, and gamma-ray bursts. They are therefore associated with extreme events in the universe, making them perhaps the most bizarre objects in the cosmos next to black holes. As an example of extreme behavior, in 2004 a flare on t...
Astrophysicists do not yet know exactly how a magnetar generates its stupendous magnetic field. However, it probably relates to the incredible density of neutron stars and their bizarre interiors. Just one sugar cube-sized amount of neutron star material would weigh a billion tons on the Earth … about the same as an average mountain! The magnetic f...
A few magnetars are also pulsars, those celestial lighthouses that sweep the sky with powerful radio beams (and, rarely, beams of visible light too, such as in the case of the Crab Nebula). Recently, detecting a magnetar that is also a pulsar enabled astronomers to establish an accurate distance to a magnetar for the first time.
The first event that originated from a magnetar showed up in 1979, although at that time astronomers did not identify the activity as belonging to a separate class of objects. It occurred when two Russian spacecraft suddenly observed a huge blast of gamma radiation in their detectors: readings on both the probes went up from a normal 100 counts per...
Magnetars have also emerged as prime candidates for causing Fast Radio Bursts, or FRBs, those enigmatic millisecond-long pulses of radio waves that carry as much energy as our sun releases in a year! Up until recently, astronomers thought all FRBs were extragalactic in nature, but in April 2020, they detected an FRB coming from inside our own Milky...
Jun 2, 2024 · Magnetars come into existence the same way a neutron star does—through the core collapse of a massive star during a supernova explosion. So, what is different about this explosion that causes it to become the most powerful magnet in the universe?
- 6 min
The story begins in 1979, in retrospect the year of the magnetar. Scientists discovered a strange object in January of that year that flashed lower-energy gamma rays and then grew dim again. Two months later, on March 5, one of the brightest gamma-ray events in the sky took place.
Mar 25, 2015 · Magnetars are neutron stars in which a strong magnetic field is the main energy source. About two dozens of magnetars, plus several candidates, are currently known in our Galaxy and in the Magellanic Clouds. They appear as highly variable X-ray sources and, in some cases, also as radio and/or optical pulsars.
- Sandro Mereghetti, José A. Pons, Andrew Melatos
- 2015
Aug 10, 2016 · They become magnetars. You've probably heard the name, but what are they? As I said, magnetars are neutron stars, formed from supernovae.
Aug 17, 2023 · CNN — Magnetars are among the most bizarre and mysterious objects in the universe, packing in trillions of times more magnetic pull than the Earth or any magnet developed by humans. Scientists...
