Discovery of the First White Dwarf Pulsar

The South African Large Telescope (SALT) has significantly contributed to the identification of the first white dwarf pulsar and the understanding of the mysteries of the galaxy. SALT is the largest optical telescope in the Southern Hemisphere. Pulsars are rapidly rotating neutron stars that emit continuous pulses of radiation energy along with strong magnetic field lines. According to the website 'Tech Times', the construction of this telescope cost $43 million and it was commissioned in 2011. Its rapid response capability and much lower cost compared to similar European and American facilities are competitive advantages of this telescope. Neutron stars are massive objects about the size of the sun that become compressed at the end of their life cycle, reaching a size of about 10 kilometers. These stars have a very strong gravitational force, and the only objects more compressed than these stars are black holes. Meanwhile, Reuters quoted Ted Williams, one of the managers of the South African Astronomical Observatory that operates this site, stating, 'SALT has met expectations, producing scientifically quality data that aids in exploring the distant universe.' Williams noted that decades ago, scientists discovered that these highly dense objects create pulsars that produce radio waves and other electromagnetic radiation with over a thousand pulses per second. However, another type of dense object exists that, instead of having a diameter of 10 kilometers, has a diameter of over six thousand kilometers; in other words, these objects are larger than Earth and are called white dwarfs. We have recently discovered the first white dwarf pulsar. The 10-meter SALT telescope, operated by a consortium of South Africa, India, the USA, and Europe, is capable of halting its regular daily observations and focusing on new discoveries within minutes. In February, SALT was the first telescope to spectrograph a supernova near the Centaurus A galaxy just hours after its discovery. This telescope also helped discover one of the largest cosmic explosions, which is 200 times stronger than a simple supernova and is said to emit light 570 billion times more than the sun. Naledi Pandor, the South African Minister of Science who visited this telescope, stated, 'This is what we want for South Africa and for Africa; we should not be on the sidelines but should be at the center and start producing quality work on a global scale.' South Africa, in collaboration with Australia, is hosting the largest and most advanced radio telescope in the world, the $2 billion 'Square Kilometer Array', which will investigate the origins of the universe and explore extraterrestrial life.