Newfound Blob (other)

	Newfound Blob (other) Newfound Blob may refer to: * Lyman-alpha blob 1 (LAB-1), one of the first discovered Lyman-alpha blobs * Himiko (Lyman-alpha blob) * EQ J221734.0+001701, the ''SSA22 Protocluster'' * a gas cloud orbiting Sagittarius A* * the magma plume causing the African superswell The African superswell is a region including the Southern and Eastern African plateaus and the Southeastern Atlantic basin where exceptional tectonic uplift has occurred, resulting in terrain much higher than its surroundings. The average elevatio ... {{dab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Lyman-alpha Blob 1 Lyman-alpha blob 1 (LAB-1) is a giant cosmic cloud of gas located at the southern constellation of Aquarius, approximately 11.5 billion light-years from Earth with a redshift (z) of 3.09. It was discovered unexpectedly in 2000 by Charles Steidel and colleagues, who were surveying for high-redshift galaxies using the 200 inch (5.08 m) Hale telescope at the Palomar Observatory. The researchers had been investigating the abundance of galaxies in the young Universe when they came across two objects which would become known as Lyman-alpha blobs—huge concentrations of gases emitting the Lyman-alpha emission line of hydrogen. LAB-1 is the first discovered Lyman-alpha blob, hence it has the number 1. It is the prototype of objects of this kind. It is also one of the largest of its kind, measuring 300,000 light years across, three times larger than the Milky Way. The blob appears green on the image because of the combination of the high redshift ( z = 3) and the ultraviolet nature of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Lyman-alpha Blob In astronomy, a Lyman-alpha blob (LAB) is a huge concentration of a gas emitting the Lyman-alpha emission line. LABs are some of the largest known individual objects in the Universe. Some of these gaseous structures are more than 400,000 light years across. So far they have only been found in the high-redshift universe because of the ultraviolet nature of the Lyman-alpha emission line. Since Earth's atmosphere is very effective at filtering out UV photons, the Lyman-alpha photons must be redshifted in order to be transmitted through the atmosphere. The most famous Lyman-alpha blobs were discovered in 2000 by Steidel et al. Matsuda et al., using the Subaru Telescope of the National Astronomical Observatory of Japan extended the search for LABs and found over 30 new LABs in the original field of Steidel et al., although they were all smaller than the originals. These LABs form a structure which is more than 200 million light-years in extent. It is currently unknown whether LABs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Himiko (Lyman-alpha Blob) Himiko is a large gas cloud found at redshift of z=6.6 that predates similar Lyman-alpha blobs. At the time of its discovery in 2009, researchers said it "may represent the most massive object ever discovered in the early universe". It is located in Cetus at redshift z=6.595, about 12.9 billion light years from Earth, or about miles ( kilometers). Characteristics This nebular gas cloud is thought to be a protogalaxy, caught in the act of formation. There have been no spectroscopic signatures of anything other than hydrogen or helium, and its luminance cannot be ascribed to gravitational lensing, black holes or exterior excitation. The lack of any chemical signatures other than hydrogen and helium illustrate the extreme primitiveness of the object, and early enough so as not to be polluted by carbon signatures from young stars. Size It is 55,000 light years across (half the diameter of our galaxy), and at the time of discovery, said to "hold more than 10 times as much mass as th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Sagittarius A* Sagittarius A* ( ), abbreviated Sgr A* ( ), is the supermassive black hole at the Galactic Center of the Milky Way. It is located near the border of the constellations Sagittarius and Scorpius, about 5.6° south of the ecliptic, visually close to the Butterfly Cluster (M6) and Lambda Scorpii. The object is a bright and very compact astronomical radio source. The name Sagittarius A* follows from historical reasons. In 1954, John D. Kraus, Hsien-Ching Ko, and Sean Matt listed the radio sources they identified with the Ohio State University radio telescope at 250 MHz. The sources were arranged by constellation and the letter assigned to them was arbitrary, with A denoting the brightest radio source within the constellation. The asterisk is because its discovery was considered "exciting", in parallel with the nomenclature for excited state atoms which are denoted with an asterisk (e.g. the excited state of Helium would be He). The asterisk was assigned in 1982 ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]