tipa -- 8/20/2015

The XMM-Newton view of the central degrees of the Milky Way

• G. Ponti, M. R. Morris, R. Terrier, F. Haberl, R. Sturm, M. Clavel, S. Soldi, A. Goldwurm, P. Predehl, K. Nandra, G. Belanger, R. S. Warwick, V. Tatischeff

2FHL: The Second Catalog of Hard Fermi-LAT Sources

• The Fermi-LAT Collaboration

TeV Lepton Number Violation: From Neutrinoless Double Beta Decay to the LHC

• Tao Peng, Michael J. Ramsey-Musolf, Peter Winslow

First observation of long-lived $π^+ π^-$ atoms

• DIRAC Collaboration

tipa -- 8/19/2015

Measurement of the Reactor Antineutrino Flux and Spectrum at Daya Bay

• Daya Bay Collaboration

Dark matter cores all the way down

• J. I. Read, O. Agertz, M. L. M. Collins

Planck intermediate results. XXXIX. The Planck list of high-redshift source candidates

• Planck Collaboration

Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory

• The Pierre Auger Collaboration

Multi-Messenger Tests for Fast-Spinning Newborn Pulsars Embedded in Stripped-Envelope Supernovae

• Kazumi Kashiyama, Kohta Murase, Imre Bartos, Kenta Kiuchi, Raffaella Margutti

Detection of Broad H$α$ Emission Lines in the Late-time Spectra of a Hydrogen-poor Superluminous Supernova

• Lin Yan (Caltech), R. Quimby (SDSU), E. Ofek (Weizmann), A. Gal-Yam (Weizmann), P. Mazzali (Liverpool), D. Perley (Copenhagen), P. Vreeswijk (Weizmann), G. Leloudas (Weizmann), A. de Cia (Weizmann), F. Masci (Caltech), S. B. Cenko (GSFC), Y. Cao (Caltech), S. R. Kulkarni (Caltech), P. E. Nugent (LBNL), Umaa D. Rebbapragada (JPL), P. R. Woźniak (Los Alamos), O. Yaron (Weizmann)

Composite Fermions and the First-Landau-Level Fine Structure of the Fractional Quantum Hall Effect

• W. C. Haxton, Daniel J. Haxton

tipa -- 8/18/2015

Shock Revival in Core-Collapse Supernovae: A Phase-Diagram Analysis

• Daniel Gabay (1), Shmuel Balberg (1), Uri Keshet (2) ((1) HUJI, (2) BGU)

Search for hidden-sector bosons in $B^0 \!\to K^{*0}μ^+μ^-$ decays

• LHCb collaboration

Precision measurement of the mass difference between light nuclei and anti-nuclei

• ALICE collaboration

tipa -- 8/17/2015

Dark Matter Halos as Particle Colliders: A Unified Solution to Small-Scale Structure Puzzles from Dwarfs to Clusters

• Manoj Kaplinghat, Sean Tulin, Hai-Bo Yu

First measurement of HI 21cm emission from a GRB host galaxy indicates a post-merger system

• Maryam Arabsalmani, Sambit Roychowdhury, Martin Zwaan, Nissim Kanekar, Michał J. Michałowski

Asymmetric supernova remnants generated by Galactic, massive runaway stars

• D. M.-A. Meyer, N. Langer, J. Mackey, P. F. Velazquez, A. Gusdorf

Galaxy Strategy for LIGO-Virgo Gravitational Wave Counterpart Searches

• Neil Gehrels, John K. Cannizzo, Jonah Kanner, Mansi M. Kasliwal, Samaya Nissanke, Leo P. Singer

Eight Ultra-faint Galaxy Candidates Discovered in Year Two of the Dark Energy Survey

• The DES Collaboration

classic papers of the week -- 210

Cosmological limits to the number of massive leptons

• G. Steigman (National Radio Astronomy Observatory; Yale University) , D.N. Schramm, J.E. Gunn (University of Chicago, California Institute of Technology)

The four laws of black hole mechanics

• Bardeen, J. M. (Department of Physics, Yale University); Carter, B.; Hawking, S. W. (Institute of Astronomy, University of Cambridge)

The Pressure due to Radiation

• Nichols, E. F.; Hull, G. F. (Wilder Laboratory, Dartmouth College)

tipa -- 8/14/2015

Massive stars formed in atomic hydrogen reservoirs: HI observations of gamma-ray burst host galaxies

• Michał J. Michałowski (IfA, Edinburgh), G. Gentile, J. Hjorth, M. R. Krumholz, N. R. Tanvir, P. Kamphuis, D. Burlon, M. Baes, S. Basa, S. Berta, J. M. Castro Ceron, D. Crosby, V. D'Elia, J. Elliott, J. Greiner, L. K. Hunt, S. Klose, M. P. Koprowski, E. Le Floc'h, D. Malesani, T. Murphy, A. Nicuesa Guelbenzu, E. Palazzi, J. Rasmussen, A. Rossi, S. Savaglio, P. Schady, J. Sollerman, A. de Ugarte Postigo, D. Watson, P. van der Werf, S. D. Vergani, D. Xu

Two Type Ia Supernovae at Redshift ~2 : Improved Classification and Redshift Determination with Medium-band Infrared Imaging

• Steven A. Rodney, Adam G. Riess, Daniel M. Scolnic, David O. Jones, Shoubaneh Hemmati, Alberto Molino, Curtis McCully, Bahram Mobasher, Louis-Gregory Strolger, Or Graur, Brian Hayden, Stefano Casertano

Predicting Gaia's Parallax Distance to the Cygnus OB2 Association with Eclipsing Binaries

• Daniel C. Kiminki, Henry A. Kobulnicky, Carlos A. Vargas Álvarez, Michael J. Alexander, Michael J. Lundquist

r-Process Lanthanide Production and Heating Rates in Kilonovae

• Jonas Lippuner, Luke F. Roberts

Growing White Dwarfs to the Chandrasekhar Limit: The Parameter Space of the Single Degenerate SNIa Channel

• Yael Hillman, Dina Prialnik, Attay Kovetz, Michael M. Shara

Population synthesis of accreting white dwarfs: II. X-ray and UV emission

• Hai-Liang Chen, T. E. Woods, L. R. Yungelson, M. Gilfanov, Zhanwen Han

Centaurus A: constraints on the nature of the giant lobe filaments from XMM-Newton observations

• Sarka Wykes, Martin J. Hardcastle, Judith H. Croston

tipa -- 8/13/2015

The Diversity of Transients from Magnetar Birth

• Brian D. Metzger, Ben Margalit, Daniel Kasen, Eliot Quataert

Universal clustering of dark matter in phase space

• Jesus Zavala (Dark Cosmology Centre), Niayesh Afshordi (PI, UW)

Comprehensive Assessment of the Too-Big-to-Fail Problem

• Fangzhou Jiang (1), Frank C. van den Bosch (1) ((1) Yale University)

Relativistic MHD simulations of core-collapse GRB jets: 3D instabilities and magnetic dissipation

• Omer Bromberg (1), Alexander Tchekhovskoy (2) ((1) Princeton, (2) Berkeley)

The Q/U Imaging ExperimenT: Polarization Measurements of the Galactic Plane at 43 and 95 GHz

• QUIET Collaboration

Derivation of a large isotropic diffuse sky emission component at 1.25 and 2.2um from the COBE/DIRBE data

• K. Sano, K. Kawara, S. Matsuura, H. Kataza, T. Arai, Y. Matsuoka

Constraints on the distribution of supernova remnants with Galactocentric radius

• D. A. Green

A LOFAR Census of Millisecond Pulsars

• V. I. Kondratiev, J. P. W. Verbiest, J. W. T. Hessels, A. V. Bilous, B. W. Stappers, M. Kramer, E. F. Keane, A. Noutsos, S. Osłowski, R. P. Breton, T. E. Hassall, A. Alexov, S. Cooper, H. Falcke, J.-M. Grießmeier, A. Karastergiou, M. Kuniyoshi, M. Pilia, C. Sobey, S. ter Veen, P. Weltevrede, M. E. Bell, J. W. Broderick, S. Corbel, J. Eislöffel, S. Markoff, A. Rowlinson, J. D. Swinbank, R. A. M. J. Wijers, R. Wijnands, P. Zarka

XMM-Newton Large Program on SN1006 - I: Methods and Initial Results of Spatially-Resolved Spectroscopy

• Jiang-Tao Li (CEA, Saclay, University of Michigan), Anne Decourchelle (CEA, Saclay), Marco Miceli (Universita di Palermo, INAF-Osservatorio Astronomico di Palermo), Jacco Vink (University of Amsterdam), Fabrizio Bocchino (INAF-Osservatorio Astronomico di Palermo)

The NANOGrav Nine-year Data Set: Limits on the Isotropic Stochastic Gravitational Wave Background

• Zaven Arzoumanian, Adam Brazier, Sarah Burke-Spolaor, Sydney Chamberlin, Shami Chatterjee, Brian Christy, Jim Cordes, Neil Cornish, Paul Demorest, Xihao Deng, Tim Dolch, Justin Ellis, Rob Ferdman, Emmanuel Fonseca, Nate Garver-Daniels, Fredrick Jenet, Glenn Jones, Vicky Kaspi, Michael Koop, Michael Lam, Joseph Lazio, Lina Levin, Andrea Lommen, Duncan Lorimer, Jin Luo, Ryan Lynch, Dustin Madison, Maura McLaughlin, Sean McWilliams, Chiara Mingarelli, David Nice, Nipuni Palliyaguru, Tim Pennucci, Scott Ransom, Laura Sampson, Sotiris Sanidas, Alberto Sesana, Xavier Siemens, Joseph Simon, Ingrid Stairs, Dan Stinebring, Kevin Stovall, Joseph Swiggum, Stephen Taylor, Michele Vallisneri, Rutger van Haasteren, Yan Wang, Weiwei Zhu

tipa -- 8/12/2015

Digging deeper into the Southern skies: a compact Milky-Way companion discovered in first-year Dark Energy Survey data

• E. Luque, A. Queiroz, B. Santiago, A. Pieres, E. Balbinot, K. Bechtol, A. Drlica-Wagner, A. Fausti Neto, L. N. da Costa, M. A. G. Maia, B. Yanny, T. Abbott, S. Allam, A. Benoit-Lévy, E. Bertin, D. Brooks, E. Buckley-Geer, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, C. E. Cunha, S. Desai, H. T. Diehl, J. P. Dietrich, T. F. Eifler, D. A. Finley, B. Flaugher, P. Fosalba, J. Frieman, D. W. Gerdes, D. Gruen, G. Gutierrez, K. Honscheid, D. J. James, K. Kuehn, N. Kuropatkin, O. Lahav, T. S. Li, M. March, J. L. Marshall, P. Martini, R. Miquel, E. Neilsen, R. C. Nichol, B. Nord, R. Ogando, A. A. Plazas, A. K. Romer, A. Roodman, E. Sanchez, V. Scarpine, M. Schubnell, I. Sevilla-Noarbe, R. C. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E. C. Swanson, G. Tarle, J. Thaler, D. Tucker, A. R. Walker, Y. Zhang

Inefficient highly eccentric accretion and the low luminosity of stellar tidal disruption events

• Gilad Svirski, Tsvi Piran, Julian Krolik

On the distribution of particle acceleration sites in plasmoid-dominated relativistic magnetic reconnection

• Krzysztof Nalewajko, Dmitri A. Uzdensky, Benoît Cerutti, Gregory R. Werner, Mitchell C. Begelman

Optical Thermonuclear Transients From Tidal Compression of White Dwarfs as Tracers of the Low End of the Massive Black Hole Mass Function

• Morgan MacLeod, James Guillochon, Enrico Ramirez-Ruiz, Daniel Kasen, Stephan Rosswog

Thermonuclear detonations ensuing white dwarf mergers

• Marius Dan, James Guillochon, Marcus Brüggen, Enrico Ramirez-Ruiz, Stephan Rosswog

Efficiency of Super-Eddington Magnetically-Arrested Accretion

• Jonathan C. McKinney (1), Lixin Dai (1), Mark Avara (1) ((1) University of Maryland)

Short-range spin-dependent interactions of electrons: a probe for exotic pseudo-Goldstone bosons

• W. A. Terrano, E.G. Adelberger, J.G.Lee, B.R. Heckel

tipa -- 8/11/2015

Effects of uncertainties in simulations of extragalactic UHECR propagation, using CRPropa and SimProp

• Rafael Alves Batista, Denise Boncioli, Armando di Matteo, Arjen van Vliet, David Walz

Star formation properties of sub-mJy radio sources

• M. Bonzini, V. Mainieri, P. Padovani, P. Andreani, S. Berta, M. Bethermin, D. Lutz, G. Rodighiero, D. Rosario, P. Tozzi, S. Vattakunnel

Final Evolution and Delayed Explosions of Spinning White Dwarfs in Single Degenerate Models for Type Ia Supernovae

• Omar G. Benvenuto (1), Jorge A. Panei (1), Ken'ichi Nomoto (2), Hikaru Kitamura (3), Izumi Hachisu (4)

Sensitivity study using machine learning algorithms on simulated r-mode gravitational wave signals from newborn neutron stars

• Antonis Mytidis, Athanasios A. Panagopoulos, Orestis P. Panagopoulos, Bernard Whiting

Supernova 1987A: a Template to Link Supernovae to their Remnants

• S. Orlando, M. Miceli, M.L. Pumo, F. Bocchino

Probing the Internal Composition of Neutron Stars with Gravitational Waves

• Katerina Chatziioannou, Kent Yagi, Antoine Klein, Neil Cornish, Nicolas Yunes

tipa -- 8/10/2015

Chandra Observations of SNR RCW 103

• Kari A. Frank (Penn State), David N. Burrows (Penn State), Sangwook Park (U of Texas at Arlington)

Recoiling black holes: prospects for detection and implications of spin alignment

• Laura Blecha, Debora Sijacki, Luke Zoltan Kelley, Paul Torrey, Mark Vogelsberger, Dylan Nelson, Volker Springel, Gregory Snyder, Lars Hernquist

tipa -- 8/7/2015

The Properties of the Progenitor Supernova, Pulsar Wind, and Neutron Star inside PWN G54.1+0.3

• Joseph D. Gelfand, Patrick O. Slane, Tea Temim

A Multi-frequency analysis of recent indirect dark matter detection claims

• G. Beck, S. Colafrancesco

tipa -- 8/6/2015

High Resolution Chandra HETG spectroscopy of V404 Cygni in Outburst

• Ashley L. King, Jon M. Miller, John Raymond, Mark T. Reynolds, Warren Morningstar

Supersymmetric Dark Matter after LHC Run 1

• E.A. Bagnaschi, O. Buchmueller, R. Cavanaugh, M. Citron, A. De Roeck, M.J. Dolan, J.R. Ellis, H. Flaecher, S. Heinemeyer, G. Isidori, S. Malik, D. Martinez Santos, K.A. Olive, K. Sakurai, K.J. de Vries, G. Weiglein

A model with cosmological Bell inequalities

• Juan Maldacena

tipa -- 8/5/2015

Optical and near-infrared observations of SN 2013dx associated with GRB 130702A

• V. L. Toy, S. B. Cenko, J. M. Silverman, N. R. Butler, A. Cucchiara, A. M. Watson, D. Bersier, D. A. Perley, R. Margutti, E. Bellm, J. S. Bloom, Y. Cao, J. I. Capone, K. Clubb, A. Corsi, J. A. de Diego, A. V. Filippenko, O. D. Fox, A. Gal-Yam, N. Gehrels, L. Georgiev, J. J. González, M. M. Kasliwal, P. L. Kelly, S. R. Kulkarni, A. S. Kutyrev, W. H. Lee, J. X. Prochaska, E. Ramirez-Ruiz, M. G. Richer, C. Román, L. Singer, D. Stern, E. Troja, S. Veilleux

B fields in OB stars (BOB): low-resolution FORS2 spectropolarimetry of the first sample of 50 massive stars

• L. Fossati, N. Castro, M. Schoeller, S. Hubrig, N. Langer, T. Morel, M. Briquet, A. Herrero, N. Przybilla, H. Sana, F. R. N. Schneider, A. de Koter, the BOB collaboration

PSR J1906+0722: An Elusive Gamma-ray Pulsar

• C. J. Clark, H. J. Pletsch, J. Wu, L. Guillemot, M. Ackermann, B. Allen, A. de Angelis, C. Aulbert, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, R. Bellazzini, E. Bissaldi, O. Bock, R. Bonino, E. Bottacini, T. J. Brandt, J. Bregeon, P. Bruel, S. Buson, G. A. Caliandro, R. A. Cameron, M. Caragiulo, P. A. Caraveo, C. Cecchi, D. J. Champion, E. Charles, A. Chekhtman, J. Chiang, G. Chiaro, S. Ciprini, R. Claus, J. Cohen-Tanugi, A. Cuéllar, S. Cutini, F. D'Ammando, R. Desiante, P. S. Drell, H. B. Eggenstein, C. Favuzzi, H. Fehrmann, E. C. Ferrara, W. B. Focke, A. Franckowiak, P. Fusco, F. Gargano, D. Gasparrini, N. Giglietto, F. Giordano, T. Glanzman, G. Godfrey, I. A. Grenier, J. E. Grove, S. Guiriec, A. K. Harding, E. Hays, J. W. Hewitt, A. B. Hill, D. Horan, X. Hou, T. Jogler, et al.

An Extended Magnetohydrodynamics Model for Relativistic Weakly Collisional Plasmas

• Mani Chandra, Charles F. Gammie, Francois Foucart, Eliot Quataert

Supernova Neutrinos: Production, Oscillations and Detection

• Alessandro Mirizzi (Bari Univ. & INFN, Bari), Irene Tamborra (GRAPPA Inst., Amsterdam), Hans-Thomas Janka (Max Planck Inst. for Astrophysics, Garching), Ninetta Saviano (IPPP, Durham), Kate Scholberg (Department of Physics, Duke Univ., Durham), Robert Bollig (TUM, Munich), Lorenz Hudepohl (MPCDF, Garching), Sovan Chakraborty (MPI, Munich)

tipa -- 8/4/2015

On the Nature of X-ray Surface Brightness Fluctuations in M87

• P. Arévalo (UV, Chile), E. Churazov (MPA, IKI), I. Zhuravleva (KIPAC, Stanford), W. R. Forman (CfA), C. Jones (CfA)

G2 and Sgr A*: A Cosmic Fizzle At The Galactic Center

• Brian Morsony, Brandon Gracey, Jared Workman, DooSoo Yoon

tipa -- 8/3/2015

Chaotic Dispersal of Tidal Debris

• Adrian M. Price-Whelan, Kathryn V. Johnston, Monica Valluri, Sarah Pearson, Andreas H. W. Kupper, David W. Hogg

Hard X-ray Morphological and Spectral Studies of The Galactic Center Molecular Cloud Sgr B2: Constraining Past Sgr A* Flaring Activity

• Shuo Zhang, Charles J. Hailey, Kaya Mori, Maïca Clavel, Régis Terrier, Gabriele Ponti, Andrea Goldwurm, Franz E. Bauer, Steven E. Boggs, William W. Craig, Finn E. Christensen, Fiona A. Harrison, Jaesub Hong, Melania Nynka, Daniel Stern, Simona Soldi, John A. Tomsick, William W. Zhang

NuSTAR observations of the young, energetic radio pulsar PSR B1509-58

• Ge Chen, Hongjun An, Victoria M. Kaspi, Fiona Harrison, Kristen Madsen, Daniel Stern

Performance of two Askaryan Radio Array stations and first results in the search for ultra-high energy neutrinos

• ARA Collaboration

Search for gamma-ray emission from the Coma Cluster with six years of Fermi-LAT data

• The Fermi-LAT Collaboration, Y. Rephaeli

Flavor instabilities in the multi-angle neutrino line model

• Sajad Abbar, Huaiyu Duan, Shashank Shalgar (UNM)

tipa -- 7/31/2015

An Integral Condition for Core-Collapse Supernova Explosions

• Jeremiah W. Murphy, Joshua C. Dolence

The ACS LCID Project: On the origin of dwarf galaxy types: a manifestation of the halo assembly bias?

• C. Gallart (IAC), M. Monelli (IAC), L. Mayer (U. Zurich), A. Aparicio (IAC), G. Battaglia (IAC), E.J. Bernard (ROE), S. Cassisi (INAF), A. A. Cole (U. Tasmania), A. E. Dolphin (Raytheon), I. Drozdovsky (IAC), S.L. HIdalgo (IAC), J. F. Navarro (U. Victoria), S. Salvadori (Kapteyn), E.D. Skillman (U. Minnesota), P. B. Stetson (NRC, Canada), D.R.Weisz (U. Washington)

A non-parametric method for measuring the local dark matter density

• Hamish Silverwood, Sofia Sivertsson, Pascal Steger, Justin I. Read, Gianfranco Bertone

Torque Enhancement, Spin Equilibrium, and Jet Power from Disk-Induced Opening of Pulsar Magnetic Fields

• Kyle Parfrey, Anatoly Spitkovsky, Andrei M. Beloborodov

Comparison of the calorimetric and kinematic methods of neutrino energy reconstruction in disappearance experiments

• Artur M. Ankowski, Omar Benhar, Pilar Coloma, Patrick Huber, Chun-Min Jen, Camillo Mariani, Davide Meloni, Erica Vagnoni

The $ν$ generation: present and future constraints on neutrino masses from cosmology and laboratory experiments

• Martina Gerbino, Massimiliano Lattanzi, Alessandro Melchiorri

Gravitational Lensing in Plasmic Medium

• G. S. Bisnovatyi-Kogan, O. Yu. Tsupko

tipa -- 7/30/2015

A Chandra search for the pulsar wind nebula around PSR B1055-52

• B. Posselt, G. Spence, G.G. Pavlov

Ram Pressure Stripping of the Large Magellanic Cloud's Disk as a Probe of the Milky Way's Circumgalactic Medium

• Munier Salem (Columbia), Gurtina Besla (U. Arizona), Greg Bryan (Columbia), Mary Putman (Columbia), Roeland P. van der Marel (STScI), Stephanie Tonnesen (Carnegie Obs.)

Near-ultraviolet Spectroscopy of Star-forming Galaxies from eBOSS: Signatures of Ubiquitous Galactic-scale Outflows

• Guangtun Ben Zhu (JHU), Johan Comparat, Jean-Paul Kneib, Timothée Delubac, Anand Raichoor, Kyle S. Dawson, Jeffrey Newman, Christophe Yèche, Xu Zhou, Donald P. Schneider

Multi-wavelength analysis of the Galactic supernova remnant MSH 11-61A

• Katie Auchettl, Patrick Slane, Daniel Castro, Adam R. Foster, Randall K. Smith

Constraining the formation of black-holes in short-period Black-Hole Low-Mass X-ray Binaries

• Serena Repetto, Gijs Nelemans

tipa -- 7/29/2015

Sagittarius II, Draco II and Laevens 3: three new Milky Way satellites discovered in the Pan-STARRS 1 3pi Survey

• Benjamin P. M. Laevens, Nicolas F. Martin, Edouard J. Bernard, Edward F. Schlafly, Branimir Sesar, Hans-Walter Rix, Eric F. Bell, Annette M. N. Ferguson, Colin T. Slater, William E. Sweeney, Rosemary F. G. Wyse, Avon P. Huxor, William S. Burgett, Kenneth C. Chambers, Peter W. Draper, Eugene A. Magnier, Nigel Metcalfe, John L. Tonry, Richard J. Wainscoat, Christopher Waters

Study of cosmic ray events with high muon multiplicity using the ALICE detector at the CERN Large Hadron Collider

• ALICE Collaboration

Capabilities of future intensity interferometers for observing fast-rotating stars: imaging with two- and three-telescope correlations

• Paul D. Nunez, Armando Domiciano de Souza

Exclusion of Leptophilic Dark Matter Models using XENON100 Electronic Recoil Data

• The XENON Collaboration

Search for Event Rate Modulation in XENON100 Electronic Recoil Data

• The XENON Collaboration

Radiative-transfer models for supernovae IIb/Ib/Ic from binary-star progenitors

• Luc Dessart, D. John Hillier, Stan Woosley, Eli Livne, Roni Waldman, Sung-Chul Yoon, Norbert Langer

Self-induced flavor conversion of supernova neutrinos on small scales

• Sovan Chakraborty, Rasmus Sloth Hansen, Ignacio Izaguirre, Georg Raffelt

Analytic solution of the Boltzmann equation in the early universe

• D. Bazow (Ohio State U.), G. S. Denicol (McGill U.), U. Heinz (Ohio State U.), M. Martinez (Ohio State U.), J. Noronha (Sao Paulo U. & Columbia U.)