Discovery
G1.9+0.3 was first identified as a SNR in 1984 from observations made with the VLA radio telescope. Because of its unusually small angular size, it was thought to be young—less than about one thousand years old. In 2007, X-ray observations made with the Chandra X-ray Observatory revealed that the object was about 15% larger than in the earlier VLA observations. Further observations made with the VLA in 2008 verified increase in size, implying it is no more than 150 years old.
The coordinates of G1.9+0.3 are right ascension 17 hours 48 minutes 45.4 seconds, declination –27 degrees 10 minutes 06 seconds, which places it in the constellation Sagittarius, near its border with Ophiuchus.
Read more about this topic: Supernova Remnant G1.9+0.3
Famous quotes containing the word discovery:
“He is not a true man of science who does not bring some sympathy to his studies, and expect to learn something by behavior as well as by application. It is childish to rest in the discovery of mere coincidences, or of partial and extraneous laws. The study of geometry is a petty and idle exercise of the mind, if it is applied to no larger system than the starry one.”
—Henry David Thoreau (1817–1862)
“The discovery of Pennsylvania’s coal and iron was the deathblow to Allaire. The works were moved to Pennsylvania so hurriedly that for years pianos and the larger pieces of furniture stood in the deserted houses.”
—For the State of New Jersey, U.S. public relief program (1935-1943)
“There is a great discovery still to be made in literature, that of paying literary men by the quantity they do not write.”
—Thomas Carlyle (1795–1881)