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Unprecedented Magnetar Activity Detected by CSIRO Telescope
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Astronomers observe magnetar J1818 that is exhibiting very unusual activity
J1818 was emitting unusual pulsar-like radio waves in May but by June, it had started flickering between magnetar and pulsar-like properties.
Feb 03, 2021 12:07:09 IST
Astronomers have seen some bizarre behaviour from a magnetar which is a type of neutron star that is considered to be one of the strongest magnets in the universe. The recent findings throw light on their magnetic property and hence will help scientists understand their creation better. A team from the ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav) and CSIRO conducted the observation and the study was published in the journal
Countless legal standards ask what the reasonable person would do. But who is this person? The reasonable person is not just the average person. That s easily seen. Sometimes, average people do unreasonable things. This insight has led theorists to propose the reasonable person as some ideal person , such as the virtuous person, the person who achieves the best consequences, or the person who acts in accord with moral duty.But this is all too quick. The reasonable person isn t just the average person, but neither is it simply the ideal person. Instead, the reasonable person represents someone who is both common and good.The reasonable person is often associated with the law of accidents. To determine whether someone is legally responsible for causing an injury, courts apply a test of reasonable care . Did the person causing the injury act with the care of a reasonable person? But reasonableness sets countless other legal standards: was a killing reasonably
2 FEBRUARY 2021
New observations of a very unusual and mysterious star located approximately 15,000 light-years away from Earth have revealed a bizarre pattern of stellar activity that astronomers say they ve never witnessed before.
The star in question is called Swift J1818.0–1607, and it was only discovered last year. Swift J1818.0–1607 is what s known as a magnetar – a rare breed of neutron star, which forms when supergiant stars fail to go supernova, instead collapsing into incredibly dense cores.
Unlike most neutron stars, however, magnetars are known for producing an extremely powerful magnetic field. Only about 30 of these strange objects have ever been detected in the Milky Way, but even among their weird ilk, Swift J1818.0–1607 is an unusual outlier.
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