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Galaxy DDO 68
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Title: Discovery of a massive variable star with Z=Zo/36 in the galaxy DDO 68 Authors: S. A. Pustilnik (1), A. L. Tepliakova (1), A. Y. Kniazev (2 and 1), A. N. Burenkov (1) ((1) Special Astrophysical Observatory RAS, Russia, (2) SAAO, South Africa) The Local Volume dwarf galaxy DDO 68, from the spect...
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FRB 131104
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Title: Could FRB 131104 Originate from the Merger of Binary Neutron Stars? Author: Z. G. Dai, J. S. Wang, X. F. Wu Recently, DeLaunay et al. (2016) discovered a gamma-ray transient, Swift J0644.5-5111, associated with the fast radio burst (FRB) 131104. They also reported follow-up broadband obse...
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Spiderweb Galaxy
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New Hubble images have provided a dramatic glimpse of a large massive galaxy under assembly as smaller galaxies merge. This has commonly been thought to be the way galaxies grew in the young Universe, but now Hubble observations of the radio galaxy MRC 1138-262, nicknamed the “Spiderweb Galaxy”, h...
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Quasar 3C454.3
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Calar Alto participates in a multi-observatory effort to study the most luminous quasar ever observed. The object, radio quasar 3C 454.3 in the constellation Pegasus, experienced during 2005 a strong optical outburst that made it observable even with amateur instrumentation (reaching R = 12 ma...
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HESE 38561326 128672
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ATel 9715: Search for counterpart to IceCube-161103A with ANTARES
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NGC 1569
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Title: A New Hubble Space Telescope Distance to NGC 1569: Starburst Properties and IC 342 Group Membership Authors: Aaron J. Grocholski, Alessandra Aloisi, Roeland P. van der Marel, Jennifer Mack, Francesca Annibali, Luca Angeretti, Laura Greggio, Enrico V. Held, Donatella Romano, Marco Siri...
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Antennae NGC4038/4039
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Title: Subarcsecond Resolution Mid-Infrared Observations of Super Star Clusters in the Antennae (NGC4038/4039)
Authors: Leonie Snijders, Paul P. van der Werf, Bernhard R. Brandl, Sabine Mengel, Daniel Schaerer, Zhong Wang
In this letter researchers present ground-b...
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Theory of Everything
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The quest for a single theory that unites all of the universe's fundamental forces has thus far eluded physicists, but that has not stopped a team of them from clearing the way for nanotechnologists while they look for it.
The group, which includes Purdue University's Ephraim Fischbach, has re...
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Inflation
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Title: Large Volume Axionic Swiss-Cheese Inflation Authors: Aalok Misra, Pramod Shukla (Version v5) Continuing with the ideas of (section 4 of) [1], after inclusion of perturbative and non-perturbative alpha' corrections to the Kaehler potential and (D1- and D3-) instanton generated superp...
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Green Peas
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A team of astronomers has discovered a group of rare galaxies called the "Green Peas" with the help of citizen scientists working through an online project called Galaxy Zoo. The finding could lend unique insights into how galaxies form stars in the early universe. The Galaxy Zoo users,...
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NGC 247
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Title: Distance to NGC 0247 Authors: Barry F. Madore, Wendy L. Freedman, J. Catanzarite, Mauricio Navarrete We report VRI CCD observations of nine Cepheids in the South Polar (Sculptor) Group spiral galaxy NGC 0247. Periods of these Cepheids range from 20 to 70 days. Over the past 20 years the very b...
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Sterile Neutrino Production
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Title: Lepton Number-Driven Sterile Neutrino Production in the Early Universe Authors: Chad T. Kishimoto, George M. Fuller We examine medium-enhanced, neutrino scattering-induced decoherent production of dark matter candidate sterile neutrinos in the early universe. In cases with a signi...
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Malin 1 galaxy
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Malin 1, the prototypical giant low surface brightness galaxy, harbours a normal disk of stars, says an astronomer in California. A Hubble image reveals a barred spiral galaxy at Malin 1's centre. As a result, Malin 1 may no longer be classified as a low surface brightness galaxy. Discovered i...
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BL Lacertae
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BL Lacertae or BL Lac is a highly variable, extragalactic AGN (active galactic nucleus or active galaxy). It was first discovered by Cuno Hoffmeister in 1929, but was originally thought to be an irregular variable star in the Milky Way galaxy and so was given a variable star designation. BL Lacertae...
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3XMM J141711.1+522541
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X-ray Telescopes Find Evidence for Wandering Black Hole Astronomers have used NASA's Chandra X-ray Observatory and ESA's XMM-Newton X-ray observatory to discover an extremely luminous, variable X-ray source located outside the center of its parent galaxy. This peculiar object could be a wand...
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