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The Crab Pulsar was the first pulsar for which the spin-down limit was broken using several months of data of the LIGO observatory. Most pulsars do not rotate at constant rotation frequency, but can be observed to slow down at a very slow rate (3.7 × 10 −10 Hz/s in case of the Crab). This spin-down can be explained as a loss of rotation ...
The Crab Nebula, and the Crab Pulsar within it, is an intense space X-ray source. It is used as a standard candle in the calibration procedure of X-ray instruments in space. However, because of the Crab Nebula's variable intensity at different X-ray energies, conversion of the Crab to another units depends on the X-ray energy range of interest.
The Crab Nebula (catalogue designations M1, NGC 1952, Taurus A) is a supernova remnant and pulsar wind nebula in the constellation of Taurus.The common name comes from a drawing that somewhat resembled a crab with arms produced by William Parsons, 3rd Earl of Rosse, in 1842 or 1843 using a 36-inch (91 cm) telescope. [6]
An optical pulsar is a pulsar which can be detected in the visible spectrum. There are very few of these known: the Crab Pulsar was detected by stroboscopic techniques in 1969, [ 1 ] [ 2 ] shortly after its discovery in radio waves, at the Steward Observatory .
Debbie Harry doesn't regret her choice not to have kids.. The lead singer of Blondie, 79, spoke with The Times in a new interview and was asked whether she has any regrets about not having kids ...
Getty Images. The booming U.S. stock market will help keep the dollar expensive as global investors pour money into America, a foreign exchange strategist said. But the politics of any trade deals ...
An early drawing of the character by Hillenburg with the original name Hillenburg had made several "horrible impersonations" before he finally conceived of his character. [ 14 ] He compared the concept to Laurel and Hardy and Pee-wee Herman [ 4 ] saying, "I think SpongeBob [was] born out of my love of Laurel and Hardy shorts.
A 23-year-old hiker who survived 13 days lost in the Australian wilderness after stumbling on two granola bars has thanked his rescuers for enduring “tough conditions” to find him.