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https://www.readbyqxmd.com/read/28434934/introducing-a-novel-gravitation-based-high-velocity-compaction-analysis-method-for-pharmaceutical-powders
#1
Timo Tanner, Osmo Antikainen, Henrik Ehlers, Jouko Yliruusi
With modern tableting machines large amounts of tablets are produced with high output. Consequently, methods to examine powder compression in a high-velocity setting are in demand. In the present study, a novel gravitation-based method was developed to examine powder compression. A steel bar is dropped on a punch to compress microcrystalline cellulose and starch samples inside the die. The distance of the bar is being read by a high-accuracy laser displacement sensor which provides a reliable distance-time plot for the bar movement...
April 20, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28431748/a-benchtop-biorobotic-platform-for-in-vitro-observation-of-muscle-tendon-dynamics-with-parallel-mechanical-assistance-from-an-elastic-exoskeleton
#2
Benjamin D Robertson, Siddarth Vadakkeveedu, Gregory S Sawicki
We present a novel biorobotic framework comprised of a biological muscle-tendon unit (MTU) mechanically coupled to a feedback controlled robotic environment simulation that mimics in vivo inertial/gravitational loading and mechanical assistance from a parallel elastic exoskeleton. Using this system, we applied select combinations of biological muscle activation (modulated with rate-coded direct neural stimulation) and parallel elastic assistance (applied via closed-loop mechanical environment simulation) hypothesized to mimic human behavior based on previously published modeling studies...
March 21, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28430608/adrenalectomy-abolishes-hypergravity-induced-gastric-acid-hyposecretion
#3
Kiyong Na, Hyun-Soo Kim
Jet fighter pilots experience high gravitational acceleration forces in the cephalocaudal direction (+Gz), causing severe stress. Stress affects different physiological functions of the gastrointestinal tract. Although the effects of exposure to hypergravity on cardiovascular and cerebral functions have been the subject of numerous studies, crucial information regarding potential pathophysiological alterations following hypergravity exposure in the gastrointestinal tract is lacking. We recently documented a significant decrease in gastric secretory activity in rats after acute exposure to hypergravity...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430507/beating-the-standard-sensitivity-bandwidth-limit-of-cavity-enhanced-interferometers-with-internal-squeezed-light-generation
#4
M Korobko, L Kleybolte, S Ast, H Miao, Y Chen, R Schnabel
The shot-noise limited peak sensitivity of cavity-enhanced interferometric measurement devices, such as gravitational-wave detectors, can be improved by increasing the cavity finesse, even when comparing fixed intracavity light powers. For a fixed light power inside the detector, this comes at the price of a proportional reduction in the detection bandwidth. High sensitivity over a large span of signal frequencies, however, is essential for astronomical observations. It is possible to overcome this standard sensitivity-bandwidth limit using nonclassical correlations in the light field...
April 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28430501/metric-independence-of-vacuum-and-force-free-electromagnetic-fields
#5
Abraham I Harte
Electromagnetic fields which solve the vacuum Maxwell equations in one spacetime are well known to also be solutions in all spacetimes with conformally related metrics. This provides a sense in which electromagnetism alone cannot be used to measure certain aspects of geometry. We show that there is actually much more which cannot be so measured; relatively little of a spacetime's geometry is in fact imprinted in any particular electromagnetic field. This is demonstrated by finding a much larger class of metric transformations-involving five free functions-which preserve Maxwell solutions both in vacuum, without local currents, and also for the force-free electrodynamics associated with a tenuous plasma...
April 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28429180/theoretical-models-for-the-thermo-gravitational-separation-process-in-porous-media-filled-by-n-component-mixtures
#6
Dimitri Mutschler, Mohamed Aziz Larabi, Abdelkader Mojtabi
The aim of this work is to present a theoretical analysis of the separation of an N-component mixture. In this study, two analytical models explaining the thermo-gravitational separation of components in N-component mixtures for vertical cavity filled by a porous medium are presented and assessed. The basic state and the separation are expressed in terms of the separation ratio, and the Lewis, cross-diffusion and Rayleigh numbers. Our computational analysis confirms that, for the given values of the mass fractions, thermodiffusion can be measured with a thermo-gravitational column, strongly supporting the experimentally determined transport coefficients...
April 2017: European Physical Journal. E, Soft Matter
https://www.readbyqxmd.com/read/28428419/iptf16geu-a-multiply-imaged-gravitationally-lensed-type-ia-supernova
#7
A Goobar, R Amanullah, S R Kulkarni, P E Nugent, J Johansson, C Steidel, D Law, E Mörtsell, R Quimby, N Blagorodnova, A Brandeker, Y Cao, A Cooray, R Ferretti, C Fremling, L Hangard, M Kasliwal, T Kupfer, R Lunnan, F Masci, A A Miller, H Nayyeri, J D Neill, E O Ofek, S Papadogiannakis, T Petrushevska, V Ravi, J Sollerman, M Sullivan, F Taddia, R Walters, D Wilson, L Yan, O Yaron
We report the discovery of a multiply imaged, gravitationally lensed type Ia supernova, iPTF16geu (SN 2016geu), at redshift z = 0.409. This phenomenon was identified because the light from the stellar explosion was magnified more than 50 times by the curvature of space around matter in an intervening galaxy. We used high-spatial-resolution observations to resolve four images of the lensed supernova, approximately 0.3 arc seconds from the center of the foreground galaxy. The observations probe a physical scale of ~1 kiloparsec, smaller than is typical in other studies of extragalactic gravitational lensing...
April 21, 2017: Science
https://www.readbyqxmd.com/read/28427408/time-averaged-simulated-microgravity-tasmg-inhibits-proliferation-of-lymphoma-cells-l-540-and-hdlm-2-using-a-3d-clinostat
#8
Yoon Jae Kim, Ae Jin Jeong, Myungjoon Kim, Chiwon Lee, Sang-Kyu Ye, Sungwan Kim
BACKGROUND: Gravity is omnipresent on Earth; however, humans in space, such as astronauts at the International Space Station, experience microgravity. Long-term exposure to microgravity is considered to elicit physiological changes, such as muscle atrophy, in the human body. In addition, certain types of cancer cells demonstrate inhibited proliferation under condition of time-averaged simulated microgravity (taSMG). However, the response of human Hodgkin's lymphoma cancer cells to reduced gravity, and the associated physiological changes in these cells, have not been elucidated...
April 20, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28422161/impact-of-low-temperature-overcast-and-rainy-weather-during-the-reproductive-growth-stage-on-lodging-resistance-of-rice
#9
Fei Weng, Wujun Zhang, Xiaoran Wu, Xia Xu, Yanfeng Ding, Ganghua Li, Zhenghui Liu, Shaohua Wang
The objectives of this study were to explore the mechanism by which the lodging resistance of the rice population during the late growth period responds to low-temperature, overcast and rainy weather during the reproductive growth stage. Field experiments were conducted using indica rice Yliangyou2 (lodging-resistance variety), IIyou084 (lodging-susceptible variety) and japonica rice Wuyunjing23 (lodging-resistance variety) and W3668 (lodging- susceptible variety) in 2013 (high temperature and strong radiation during the rice reproductive growth stage), 2012 and 2014 (low temperature and weak radiation during rice reproductive growth stage)...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28417322/are-midge-swarms-bound-together-by-an-effective-velocity-dependent-gravity
#10
Andrew M Reynolds, Michael Sinhuber, Nicholas T Ouellette
Midge swarms are a canonical example of collective animal behaviour where local interactions do not clearly play a major role and yet the animals display group-level cohesion. The midges appear somewhat paradoxically to be tightly bound to the swarm whilst at the same time weakly coupled inside it. The microscopic origins of this behaviour have remained elusive. Models based on Newtonian gravity do, however, agree well with experimental observations of laboratory swarms. They are biologically plausible since gravitational interactions have similitude with long-range acoustic and visual interactions, and they correctly predict that individual attraction to the swarm centre increases linearly with distance from the swarm centre...
April 2017: European Physical Journal. E, Soft Matter
https://www.readbyqxmd.com/read/28415321/sedimentation-equilibrium-of-magnetic-nanoparticles-with-strong-dipole-dipole-interactions
#11
Andrey A Kuznetsov, Alexander F Pshenichnikov
Langevin dynamics simulation is used to study the suspension of interacting magnetic nanoparticles (dipolar spheres) in a zero applied magnetic field and in the presence of a gravitational (centrifugal) field. A particular emphasis is placed on the equilibrium vertical distribution of particles in the infinite horizontal slab. An increase in the dipolar coupling constant λ (the ratio of dipole-dipole interaction energy to thermal energy) from zero to seven units causes an increase in the particle segregation coefficient by several orders of magnitude...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28411958/effects-of-step-length-and-step-frequency-on-lower-limb-muscle-function-in-human-gait
#12
Yoong Ping Lim, Yi-Chung Lin, Marcus G Pandy
The aim of this study was to quantify the effects of step length and step frequency on lower-limb muscle function in walking. Three-dimensional gait data were used in conjunction with musculoskeletal modeling techniques to evaluate muscle function over a range of walking speeds using prescribed combinations of step length and step frequency. The body was modeled as a 10-segment, 21-degree-of-freedom skeleton actuated by 54 muscle-tendon units. Lower-limb muscle forces were calculated using inverse dynamics and static optimization...
March 21, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28411322/i-can-hear-my-shunt-audible-noises-associated-with-csf-shunts-in-hydrocephalic-patients
#13
Stefanie Kaestner, Amina Fraij, Wolfgang Deinsberger, Christian Roth
BACKGROUND: Cerebrospinal fluid (CSF) shunts are life-long implants, and patients have reported anecdotally on noises associated with their shunts. There is, however, a marked lack of information regarding acoustic phenomena related to CSF shunts. METHODS: We identified all patients who had been treated or followed in our neurosurgical department within a 15-year period from January 2000 up to the end of 2014. After approval of the local ethics committee all patients who were cognitively intact were explored by a questionnaire and by personal interview about acoustic phenomena related to their shunts...
April 14, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28409978/erratum-gravitational-casimir-effect-phys-rev-lett-114-081104-2015
#14
James Q Quach
This corrects the article DOI: 10.1103/PhysRevLett.114.081104.
March 31, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28409928/sprouting-droplets-driven-by-physical-effects-alone
#15
Katherine A Rumble, Iliya D Stoev, David J French, Ali Abou-Hassan, Paul S Clegg
Combining a partially miscible three-liquid system with interfacially trapped silica colloids, we show that small droplets can exhibit dramatic growth phenomena driven by physical effects alone. The mass dense droplets sprout tubes which grow vertically upward in a gravitational field and respond to the presence of other droplets in their path. Two of the liquids in our system are water and toluene. By varying the third liquid, we are able to relate the growth behavior to the details of the underlying three-fluid phase diagram and the changes to the interfacial tension...
April 21, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28406968/the-sense-of-balance-in-humans-structural-features-of-otoconia-and-their-response-to-linear-acceleration
#16
Rüdiger Kniep, Dirk Zahn, Jana Wulfes, Leif Erik Walther
We explored the functional role of individual otoconia within the otolith system of mammalians responsible for the detection of linear accelerations and head tilts in relation to the gravity vector. Details of the inner structure and the shape of intact human and artificial otoconia were studied using environmental scanning electron microscopy (ESEM), including decalcification by ethylenediaminetetraacetic acid (EDTA) to discriminate local calcium carbonate density. Considerable differences between the rhombohedral faces of human and artificial otoconia already indicate that the inner architecture of otoconia is not consistent with the point group -3m...
2017: PloS One
https://www.readbyqxmd.com/read/28405005/carbon-bearing-silicate-melt-at-deep-mantle-conditions
#17
Dipta B Ghosh, Suraj K Bajgain, Mainak Mookherjee, Bijaya B Karki
Knowledge about the incorporation and role of carbon in silicate magmas is crucial for our understanding of the deep mantle processes. CO2 bearing silicate melting and its relevance in the upper mantle regime have been extensively explored. Here we report first-principles molecular dynamics simulations of MgSiO3 melt containing carbon in three distinct oxidation states - CO2, CO, and C at conditions relevant for the whole mantle. Our results show that at low pressures up to 15 GPa, the carbon dioxide speciation is dominated by molecular form and carbonate ions...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28399529/in-utero-exposure-to-germinated-brown-rice-and-its-gaba-extract-attenuates-high-fat-diet-induced-insulin-resistance-in-rat-offspring
#18
Hadiza Altine Adamu, Mustapha Umar Imam, Ooi Der-Jiun, Maznah Ismail
BACKGROUND: Numerous studies have reported on the influence of diet on insulin resistance. Our study provides insight into the effect of germinated brown rice (GBR) and γ-aminobutyric acid (GABA) on early environment-driven programming and susceptibility to insulin resistance in rat offspring. METHODS: Male rat offspring from female Sprague-Dawley rats fed with a high-fat diet (HFD) alone, HFD + GBR, or HFD + GABA extract throughout pregnancy and lactation were weaned 4 weeks after delivery and followed up for 8 weeks...
April 12, 2017: Journal of Nutrigenetics and Nutrigenomics
https://www.readbyqxmd.com/read/28397688/engineering-of-a-synthetic-quadrastable-gene-network-to-approach-waddington-landscape-and-cell-fate-determination
#19
Fuqing Wu, Ri-Qi Su, Ying-Cheng Lai, Xiao Wang
The process of cell fate determination has been depicted intuitively as cells travelling and resting on a rugged landscape, which has been probed by various theoretical studies. However, few studies have experimentally demonstrated how underlying gene regulatory networks shape the landscape and hence orchestrate cellular decision-making in the presence of both signal and noise. Here we tested different topologies and verified a synthetic gene circuit with mutual inhibition and auto-activations to be quadrastable, which enables direct study of quadruple cell fate determination on an engineered landscape...
April 11, 2017: ELife
https://www.readbyqxmd.com/read/28388200/directional-limits-on-persistent-gravitational-waves-from-advanced-ligo-s-first-observing-run
#20
B P Abbott, R Abbott, T D Abbott, M R Abernathy, F Acernese, K Ackley, C Adams, T Adams, P Addesso, R X Adhikari, V B Adya, C Affeldt, M Agathos, K Agatsuma, N Aggarwal, O D Aguiar, L Aiello, A Ain, P Ajith, B Allen, A Allocca, P A Altin, A Ananyeva, S B Anderson, W G Anderson, S Appert, K Arai, M C Araya, J S Areeda, N Arnaud, K G Arun, S Ascenzi, G Ashton, M Ast, S M Aston, P Astone, P Aufmuth, C Aulbert, A Avila-Alvarez, S Babak, P Bacon, M K M Bader, P T Baker, F Baldaccini, G Ballardin, S W Ballmer, J C Barayoga, S E Barclay, B C Barish, D Barker, F Barone, B Barr, L Barsotti, M Barsuglia, D Barta, J Bartlett, I Bartos, R Bassiri, A Basti, J C Batch, C Baune, V Bavigadda, M Bazzan, C Beer, M Bejger, I Belahcene, M Belgin, A S Bell, B K Berger, G Bergmann, C P L Berry, D Bersanetti, A Bertolini, J Betzwieser, S Bhagwat, R Bhandare, I A Bilenko, G Billingsley, C R Billman, J Birch, R Birney, O Birnholtz, S Biscans, A S Biscoveanu, A Bisht, M Bitossi, C Biwer, M A Bizouard, J K Blackburn, J Blackman, C D Blair, D G Blair, R M Blair, S Bloemen, O Bock, M Boer, G Bogaert, A Bohe, F Bondu, R Bonnand, B A Boom, R Bork, V Boschi, S Bose, Y Bouffanais, A Bozzi, C Bradaschia, P R Brady, V B Braginsky, M Branchesi, J E Brau, T Briant, A Brillet, M Brinkmann, V Brisson, P Brockill, J E Broida, A F Brooks, D A Brown, D D Brown, N M Brown, S Brunett, C C Buchanan, A Buikema, T Bulik, H J Bulten, A Buonanno, D Buskulic, C Buy, R L Byer, M Cabero, L Cadonati, G Cagnoli, C Cahillane, J Calderón Bustillo, T A Callister, E Calloni, J B Camp, W Campbell, M Canepa, K C Cannon, H Cao, J Cao, C D Capano, E Capocasa, F Carbognani, S Caride, J Casanueva Diaz, C Casentini, S Caudill, M Cavaglià, F Cavalier, R Cavalieri, G Cella, C B Cepeda, L Cerboni Baiardi, G Cerretani, E Cesarini, S J Chamberlin, M Chan, S Chao, P Charlton, E Chassande-Mottin, B D Cheeseboro, H Y Chen, Y Chen, H-P Cheng, A Chincarini, A Chiummo, T Chmiel, H S Cho, M Cho, J H Chow, N Christensen, Q Chu, A J K Chua, S Chua, S Chung, G Ciani, F Clara, J A Clark, F Cleva, C Cocchieri, E Coccia, P-F Cohadon, A Colla, C G Collette, L Cominsky, M Constancio, L Conti, S J Cooper, T R Corbitt, N Cornish, A Corsi, S Cortese, C A Costa, E Coughlin, M W Coughlin, S B Coughlin, J-P Coulon, S T Countryman, P Couvares, P B Covas, E E Cowan, D M Coward, M J Cowart, D C Coyne, R Coyne, J D E Creighton, T D Creighton, J Cripe, S G Crowder, T J Cullen, A Cumming, L Cunningham, E Cuoco, T Dal Canton, S L Danilishin, S D'Antonio, K Danzmann, A Dasgupta, C F Da Silva Costa, V Dattilo, I Dave, M Davier, G S Davies, D Davis, E J Daw, B Day, R Day, S De, D DeBra, G Debreczeni, J Degallaix, M De Laurentis, S Deléglise, W Del Pozzo, T Denker, T Dent, V Dergachev, R De Rosa, R T DeRosa, R DeSalvo, J Devenson, R C Devine, S Dhurandhar, M C Díaz, L Di Fiore, M Di Giovanni, T Di Girolamo, A Di Lieto, S Di Pace, I Di Palma, A Di Virgilio, Z Doctor, V Dolique, F Donovan, K L Dooley, S Doravari, I Dorrington, R Douglas, M Dovale Álvarez, T P Downes, M Drago, R W P Drever, J C Driggers, Z Du, M Ducrot, S E Dwyer, T B Edo, M C Edwards, A Effler, H-B Eggenstein, P Ehrens, J Eichholz, S S Eikenberry, R C Essick, Z Etienne, T Etzel, M Evans, T M Evans, R Everett, M Factourovich, V Fafone, H Fair, S Fairhurst, X Fan, S Farinon, B Farr, W M Farr, E J Fauchon-Jones, M Favata, M Fays, H Fehrmann, M M Fejer, A Fernández Galiana, I Ferrante, E C Ferreira, F Ferrini, F Fidecaro, I Fiori, D Fiorucci, R P Fisher, R Flaminio, M Fletcher, H Fong, S S Forsyth, J-D Fournier, S Frasca, F Frasconi, Z Frei, A Freise, R Frey, V Frey, E M Fries, P Fritschel, V V Frolov, P Fulda, M Fyffe, H Gabbard, B U Gadre, S M Gaebel, J R Gair, L Gammaitoni, S G Gaonkar, F Garufi, G Gaur, V Gayathri, N Gehrels, G Gemme, E Genin, A Gennai, J George, L Gergely, V Germain, S Ghonge, Abhirup Ghosh, Archisman Ghosh, S Ghosh, J A Giaime, K D Giardina, A Giazotto, K Gill, A Glaefke, E Goetz, R Goetz, L Gondan, G González, J M Gonzalez Castro, A Gopakumar, M L Gorodetsky, S E Gossan, M Gosselin, R Gouaty, A Grado, C Graef, M Granata, A Grant, S Gras, C Gray, G Greco, A C Green, P Groot, H Grote, S Grunewald, G M Guidi, X Guo, A Gupta, M K Gupta, K E Gushwa, E K Gustafson, R Gustafson, J J Hacker, B R Hall, E D Hall, G Hammond, M Haney, M M Hanke, J Hanks, C Hanna, M D Hannam, J Hanson, T Hardwick, J Harms, G M Harry, I W Harry, M J Hart, M T Hartman, C-J Haster, K Haughian, J Healy, A Heidmann, M C Heintze, H Heitmann, P Hello, G Hemming, M Hendry, I S Heng, J Hennig, J Henry, A W Heptonstall, M Heurs, S Hild, D Hoak, D Hofman, K Holt, D E Holz, P Hopkins, J Hough, E A Houston, E J Howell, Y M Hu, E A Huerta, D Huet, B Hughey, S Husa, S H Huttner, T Huynh-Dinh, N Indik, D R Ingram, R Inta, H N Isa, J-M Isac, M Isi, T Isogai, B R Iyer, K Izumi, T Jacqmin, K Jani, P Jaranowski, S Jawahar, F Jiménez-Forteza, W W Johnson, D I Jones, R Jones, R J G Jonker, L Ju, J Junker, C V Kalaghatgi, V Kalogera, S Kandhasamy, G Kang, J B Kanner, S Karki, K S Karvinen, M Kasprzack, E Katsavounidis, W Katzman, S Kaufer, T Kaur, K Kawabe, F Kéfélian, D Keitel, D B Kelley, R Kennedy, J S Key, F Y Khalili, I Khan, S Khan, Z Khan, E A Khazanov, N Kijbunchoo, Chunglee Kim, J C Kim, Whansun Kim, W Kim, Y-M Kim, S J Kimbrell, E J King, P J King, R Kirchhoff, J S Kissel, B Klein, L Kleybolte, S Klimenko, P Koch, S M Koehlenbeck, S Koley, V Kondrashov, A Kontos, M Korobko, W Z Korth, I Kowalska, D B Kozak, C Krämer, V Kringel, A Królak, G Kuehn, P Kumar, R Kumar, L Kuo, A Kutynia, B D Lackey, M Landry, R N Lang, J Lange, B Lantz, R K Lanza, A Lartaux-Vollard, P D Lasky, M Laxen, A Lazzarini, C Lazzaro, P Leaci, S Leavey, E O Lebigot, C H Lee, H K Lee, H M Lee, K Lee, J Lehmann, A Lenon, M Leonardi, J R Leong, N Leroy, N Letendre, Y Levin, T G F Li, A Libson, T B Littenberg, J Liu, N A Lockerbie, A L Lombardi, L T London, J E Lord, M Lorenzini, V Loriette, M Lormand, G Losurdo, J D Lough, C O Lousto, G Lovelace, H Lück, A P Lundgren, R Lynch, Y Ma, S Macfoy, B Machenschalk, M MacInnis, D M Macleod, F Magaña-Sandoval, E Majorana, I Maksimovic, V Malvezzi, N Man, V Mandic, V Mangano, G L Mansell, M Manske, M Mantovani, F Marchesoni, F Marion, S Márka, Z Márka, A S Markosyan, E Maros, F Martelli, L Martellini, I W Martin, D V Martynov, K Mason, A Masserot, T J Massinger, M Masso-Reid, S Mastrogiovanni, A Matas, F Matichard, L Matone, N Mavalvala, N Mazumder, R McCarthy, D E McClelland, S McCormick, C McGrath, S C McGuire, G McIntyre, J McIver, D J McManus, T McRae, S T McWilliams, D Meacher, G D Meadors, J Meidam, A Melatos, G Mendell, D Mendoza-Gandara, R A Mercer, E L Merilh, M Merzougui, S Meshkov, C Messenger, C Messick, R Metzdorff, P M Meyers, F Mezzani, H Miao, C Michel, H Middleton, E E Mikhailov, L Milano, A L Miller, A Miller, B B Miller, J Miller, M Millhouse, Y Minenkov, J Ming, S Mirshekari, C Mishra, S Mitra, V P Mitrofanov, G Mitselmakher, R Mittleman, A Moggi, M Mohan, S R P Mohapatra, M Montani, B C Moore, C J Moore, D Moraru, G Moreno, S R Morriss, B Mours, C M Mow-Lowry, G Mueller, A W Muir, Arunava Mukherjee, D Mukherjee, S Mukherjee, N Mukund, A Mullavey, J Munch, E A M Muniz, P G Murray, A Mytidis, K Napier, I Nardecchia, L Naticchioni, G Nelemans, T J N Nelson, M Neri, M Nery, A Neunzert, J M Newport, G Newton, T T Nguyen, A B Nielsen, S Nissanke, A Nitz, A Noack, F Nocera, D Nolting, M E N Normandin, L K Nuttall, J Oberling, E Ochsner, E Oelker, G H Ogin, J J Oh, S H Oh, F Ohme, M Oliver, P Oppermann, Richard J Oram, B O'Reilly, R O'Shaughnessy, D J Ottaway, H Overmier, B J Owen, A E Pace, J Page, A Pai, S A Pai, J R Palamos, O Palashov, C Palomba, A Pal-Singh, H Pan, C Pankow, F Pannarale, B C Pant, F Paoletti, A Paoli, M A Papa, H R Paris, W Parker, D Pascucci, A Pasqualetti, R Passaquieti, D Passuello, B Patricelli, B L Pearlstone, M Pedraza, R Pedurand, L Pekowsky, A Pele, S Penn, C J Perez, A Perreca, L M Perri, H P Pfeiffer, M Phelps, O J Piccinni, M Pichot, F Piergiovanni, V Pierro, G Pillant, L Pinard, I M Pinto, M Pitkin, M Poe, R Poggiani, P Popolizio, A Post, J Powell, J Prasad, J W W Pratt, V Predoi, T Prestegard, M Prijatelj, M Principe, S Privitera, G A Prodi, L G Prokhorov, O Puncken, M Punturo, P Puppo, M Pürrer, H Qi, J Qin, S Qiu, V Quetschke, E A Quintero, R Quitzow-James, F J Raab, D S Rabeling, H Radkins, P Raffai, S Raja, C Rajan, M Rakhmanov, P Rapagnani, V Raymond, M Razzano, V Re, J Read, T Regimbau, L Rei, S Reid, D H Reitze, H Rew, S D Reyes, E Rhoades, F Ricci, K Riles, M Rizzo, N A Robertson, R Robie, F Robinet, A Rocchi, L Rolland, J G Rollins, V J Roma, J D Romano, R Romano, J H Romie, D Rosińska, S Rowan, A Rüdiger, P Ruggi, K Ryan, S Sachdev, T Sadecki, L Sadeghian, M Sakellariadou, L Salconi, M Saleem, F Salemi, A Samajdar, L Sammut, L M Sampson, E J Sanchez, V Sandberg, J R Sanders, B Sassolas, B S Sathyaprakash, P R Saulson, O Sauter, R L Savage, A Sawadsky, P Schale, J Scheuer, S Schlassa, E Schmidt, 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C C Wipf, H Wittel, G Woan, J Woehler, J Worden, J L Wright, D S Wu, G Wu, W Yam, H Yamamoto, C C Yancey, M J Yap, Hang Yu, Haocun Yu, M Yvert, A Zadrożny, L Zangrando, M Zanolin, J-P Zendri, M Zevin, L Zhang, M Zhang, T Zhang, Y Zhang, C Zhao, M Zhou, Z Zhou, S J Zhu, X J Zhu, M E Zucker, J Zweizig
We employ gravitational-wave radiometry to map the stochastic gravitational wave background expected from a variety of contributing mechanisms and test the assumption of isotropy using data from the Advanced Laser Interferometer Gravitational Wave Observatory's (aLIGO) first observing run. We also search for persistent gravitational waves from point sources with only minimal assumptions over the 20-1726 Hz frequency band. Finding no evidence of gravitational waves from either point sources or a stochastic background, we set limits at 90% confidence...
March 24, 2017: Physical Review Letters
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