tipa -- 5/25/2011

A Molecular Star Formation Law in the Atomic Gas Dominated Regime in Nearby Galaxies

• Authors: Andreas Schruba, Adam K. Leroy, Fabian Walter, Frank Bigiel, Elias Brinks, W.J.G. de Blok, Gaelle Dumas, Carsten Kramer, Erik Rosolowsky, Karin Sandstrom, Karl Schuster, Antonio Usero, Axel Weiss, Helmut Wiesemeyer

Statistical Description of Synchrotron Intensity Fluctuations: Studies of Astrophysical Magnetic Turbulence

• Authors: Alex Lazarian, Dmitri Pogosyan

Gamma-ray burst rate: high-redshift excess and its possible origins

• Authors: Francisco J. Virgili, Bing Zhang, Kentaro Nagamine, Jun-Hwan Choi

Instability of Superfluid Flow in the Neutron Star Inner Crust

• Authors: Bennett Link (Montana State University)

Tidally-Induced Apsidal Precession in Double White Dwarfs: a new mass measurement tool with LISA

• Authors: Francesca Valsecchi, Will M. Farr, Bart Willems, Christopher .J. Deloye, Vassiliki Kalogera

tipa -- 5/24/2011

Dark Matter Debris Flows in the Milky Way

• Authors: Mariangela Lisanti, David N. Spergel

New Optical/UV Counterparts and the Spectral Energy Distributions of Nearby, Thermally Emitting, Isolated Neutron Stars

• Authors: David L. Kaplan, Atish Kamble, Marten H. van Kerkwijk, Wynn C. G. Ho

Binary Neutron Star Mergers: Dependence on the Nuclear Equation of State

• Authors: Kenta Hotokezaka, Koutarou Kyutoku, Hirotada Okawa, Masaru Shibata, Kenta Kiuchi

Diffusive propagation of cosmic rays from supernova remnants in the Galaxy. I: spectrum and chemical composition

• Authors: Pasquale Blasi, Elena Amato (INAF/Arcetri)

Hubble Space Telescope Imaging of the Outburst Site of M31 RV. II. No Blue Remnant in Quiescence

• Authors: Howard E. Bond (Space Telescope Science Institute)

tipa -- 5/23/2011

The RMS Survey: Critical Tests of Accretion Models for the Formation of Massive Stars

• Authors: Ben Davies (IoA, Cambridge/Leeds), Melvin G. Hoare (Leeds), Stuart L. Lumsden (Leeds), Takashi Hosokawa (JPL/Kyoto), Rene D. Oudmaijer (Leeds), James S. Urquhart (CSIRO), Joseph C. Mottram (Exeter), Joseph Stead (Leeds)

Weakening dark-matter cusps by clumpy baryonic infall

• Authors: David Cole, Walter Dehnen, Mark Wilkinson

X-ray emission from protostellar jet HH 154: the first evidence of a diamond shock?

• Authors: R. Bonito, S. Orlando, M. Miceli, G. Peres, G. Micela, F. Favata

Accurate Stellar Kinematics at Faint Magnitudes: application to the Bootes~I dwarf spheroidal galaxy

• Authors: Sergey E. Koposov, G. Gilmore, M. G. Walker, V. Belokurov, N.Wyn Evans, M. Fellhauer, W. Gieren, D. Geisler, L. Monaco, J.E. Norris, S. Okamoto, J. Penarrubia, M. Wilkinson, R.F.G. Wyse, D.B. Zucker

Jet Formation in the magnetospheres of supermassive black holes: analytic solutions describing energy loss through Blandford-Znajek processes

• Authors: Govind Menon, Charles D. Dermer

classic papers of the week -- 196

Masses of quasars

• Soltan, A. (N. Copernicus Astronomical Centre, Warsaw)

Asymptotic Sum Rules at Infinite Momentum

• J.D. Bjorken (Stanford Linear Accelerator Center)

The True Theory of the Tides, Extracted from That Admired Treatise of Mr. Isaac Newton

• Newton, Isaac; Halley, Edmund

tipa -- 5/20/2011

The Mass-Radius Relation at z ~ 1.5-3.0

• Authors: Sarah R. Nagy, David R. Law, Alice E. Shapley, Charles C. Steidel

The Multiverse Interpretation of Quantum Mechanics

• Authors: Raphael Bousso, Leonard Susskind

tipa -- 5/19/2011

Suzaku measurement of electron and magnetic energy densities in the east lobe of the giant radio galaxy DA 240

• Authors: Naoki Isobe, Hiromi Seta, Makoto S. Tashiro

Accurate Predictions for the Scale-Dependent Galaxy Bias from Primordial Non-Gaussianity

• Authors: Vincent Desjacques, Donghui Jeong, Fabian Schmidt

The structure function of variable 1.4 GHz radio sources based on NVSS and FIRST observations

• Authors: Eran O. Ofek, Dale A. Frail

A study of extraterrestrial antineutrino sources with the KamLAND detector

• Authors: The KamLAND Collaboration

Unbound or Distant Planetary Mass Population Detected by Gravitational Microlensing

• Authors: T. Sumi, K. Kamiya, A. Udalski, D.P. Bennett, I.A. Bond, F. Abe, C.S. Botzler, A. Fukui, K. Furusawa, J.B. Hearnshaw, Y. Itow, P.M. Kilmartin, A. Korpela, W. Lin, C.H. Ling, K. Masuda, Y. Matsubara, N. Miyake, M. Motomura, Y. Muraki, M. Nagaya, S. Nakamura, K. Ohnishi, T. Okumura, Y.C. Perrott, N. Rattenbury, To. Saito, T. Sako, D.J. Sullivan, W.L. Sweatman, P.J. Tristram, P.C.M. Yock, M.K. Szymanski, M. Kubiak, G. Pietrzynski, R. Poleski, I. Soszynski, L. Wyrzykowski, K. Ulaczyk

Blindly Detecting Merging Supermassive Black Holes with Radio Surveys

• Authors: David L. Kaplan, Richard O'Shaughnessy, Alberto Sesana, Marta Volonteri

The neutron and its role in cosmology and particle physics

• Authors: Dirk Dubbers, Michael G. Schmidt

tipa -- 5/18/2011

Gravity Probe B: Final Results of a Space Experiment to Test General Relativity

• Authors: C. W. F. Everitt, D. B. DeBra, B. W. Parkinson, J. P. Turneaure, J. W. Conklin, M. I. Heifetz, G. M. Keiser, A. S. Silbergleit, T. Holmes, J. Kolodziejczak, M. Al-Meshari, J. C. Mester, B. Muhlfelder, V. Solomonik, K. Stahl, P. Worden, W. Bencze, S. Buchman, B. Clarke, A. Al-Jadaan, H. Al-Jibreen, J. Li, J. A. Lipa, J. M. Lockhart, B. Al-Suwaidan, M. Taber, S. Wang

A new SNR with TeV shell-type morphology: HESS J1731-347

• Authors: HESS Collaboration: A. Abramowski, et al

Swift 1644+57: The Longest Gamma-ray Burst?

• Authors: Eliot Quataert, Dan Kasen

Constraints on neutrino interactions using cosmological observations

• Authors: Tristan L. Smith, Sudeep Das, Oliver Zahn (UC Berkeley)

Prospects of detecting gamma-ray emission from galaxy clusters: cosmic rays and dark matter annihilations

• Authors: Anders Pinzke, Christoph Pfrommer, Lars Bergstrom

Afterglow of binary neutron star merger

• Authors: Masaru Shibata, Yudai Suwa, Kenta Kiuchi (Kyoto U.), Kunihito Ioka (KEK)

Comparative Analysis of Peculiar Type Ia 1991bg-like Supernovae Spectra

• Authors: Brandon Doull, E. Baron

Combined Limits on WIMPs from the CDMS and EDELWEISS Experiments

• Authors: CDMS, EDELWEISS Collaborations

The Hubble Space Telescope Cluster Supernova Survey: V. Improving the Dark Energy Constraints Above z>1 and Building an Early-Type-Hosted Supernova Sample

• Authors: N. Suzuki, D. Rubin, C. Lidman, G. Aldering, R. Amanullah, K. Barbary, L.F. Barrientos, J. Botyanszki, M. Brodwin, N. Connolly, K.S. Dawson, A. Dey, M. Doi, M. Donahue, S. Deustua, P. Eisenhardt, E. Ellingson, L. Faccioli, V. Fadeyev, H.K. Fakhouri, A.S. Fruchter, D.G. Gilbank, M.D. Gladders, G. Goldhaber, A.H. Gonzalez, A. Goobar, A. Gude, T. Hattori, H. Hoekstra, E. Hsiao, X. Huang, Y. Ihara, M.J. Jee, D. Johnston, N. Kashikawa, B. Koester, K. Konishi, M. Kowalski, E.V. Linder, L. Lubin, J. Melbourne, J. Meyers, T. Morokuma, F. Munshi, C. Mullis, T. Oda, N. Panagia, S. Perlmutter, M. Postman, T. Pritchard, J. Rhodes, P. Ripoche, P. Rosati, D.J. Schlegel, A. Spadafora, S. A. Stanford, V. Stanishev, D. Stern, M. Strovink, N. Takanashi, K. Tokita, M. Wagner, L. Wang, N. Yasuda, H.K.C. Yee, (The Supernova Cosmology Project)

tipa -- 5/17/2011

A Measurement of the Damping Tail of the Cosmic Microwave Background Power Spectrum with the South Pole Telescope

• Authors: R. Keisler, C. L. Reichardt, K. A. Aird, B. A. Benson, L. E. Bleem, J. E. Carlstrom, C. L. Chang, H. M. Cho, T. M. Crawford, A. T. Crites, T. de Haan, M. A. Dobbs, J. Dudley, E. M. George, N. W. Halverson, G. P. Holder, W. L. Holzapfel, S. Hoover, Z. Hou, J. D. Hrubes, M. Joy, L. Knox, A. T. Lee, E. M. Leitch, M. Lueker, D. Luong-Van, J. J. McMahon, J. Mehl, S. S. Meyer, M. Millea, J. J. Mohr, T. E. Montroy, T. Natoli, S. Padin, T. Plagge, C. Pryke, J. E. Ruhl, K. K. Schaffer, L. Shaw, E. Shirokoff, H. G. Spieler, Z. Staniszewski, A. A. Stark, K. Story, A. van Engelen, K. Vanderlinde, J. D. Vieira, R. Williamson, O. Zahn

The Magnetic Field of the Irregular Galaxy NGC 4214

• Authors: Amanda Kepley, Ellen Zweibel, Eric Wilcots, Kelsey Johnson, Timothy Robishaw

Design and Initial Performance of the Askaryan Radio Array Prototype EeV Neutrino Detector at the South Pole

• Authors: P. Allison, J. Auffenberg, R. Bard, J. J. Beatty, D. Z. Besson, S. Boeser, C. Chen, P. Chen, A. Connolly, J. Davies, M. DuVernois, B. Fox, P. W. Gorham, E. W. Grashorn, K. Hanson, J. Haugen, K. Helbing, B. Hill, K. D. Hoffman, M. Huang, M. H. A. Huang, A. Ishihara, A. Karle, D. Kennedy, H. Landsman, A. Laundrie, T.-C. Liu, L. Macchiarulo, K. Mase, T. Meures, R. Meyhandan, C. Miki, R. Morse, M. Newcomb, R. J. Nichol, K. Ratzlaff, M. Richman, L. Ritter, B. Rotter, P. Sandstrom, D. Seckel, J. Touart, G. S. Varner, Y. Wang, C. Weaver, A. Wendorff, S. Yoshida, R. Young

Binary black hole mergers in gaseous disks: Simulations in general relativity

• Authors: Brian D. Farris, Yuk Tung Liu, Stuart L. Shapiro

Radiative efficiency and thermal spectrum of accretion onto Schwarzschild black holes

• Authors: Scott C. Noble (Rochester Institute of Technology), Julian H. Krolik (Johns Hopkins University), Jeremy D. Schnittman (NASA/Goddard Space Flight Center), John F. Hawley (University of Virginia)

On the multiple supernova population of Arp 299: constraints on progenitor properties and host galaxy star formation characteristics

• Authors: J. P. Anderson, S. M. Habergham, P. A. James

The correlation between C/O ratio, metallicity and the initial WD mass for SNe Ia

• Authors: Xiangcum Meng, Wuming Yang

An unusual stellar death on Christmas Day

• Authors: C. C. Thöne, A. de Ugarte Postigo, C. L. Fryer, K. L. Page, J. Gorosabel, D. A. Perley, C. Kouveliotou, H. T. Janka, M. A. Aloy, P. Mimica, J. L. Racusin, H. Krimm, J. Cummings, S. R. Oates, S. T. Holland, M. H. Siegel, M. De Pasquale, E. Sonbas, M. Im, W.-K. Park, D. A. Kann, S. Guziy, L. Hernandez Garcia, K. Bundy, A. J. Castro-Tirado, C. Choi, H. Jeong, H. Korhonen, P. Kubanek, J. Lim, A. Llorente, A. Moskvitin, T. Muñoz Darias, S. Pak, I. Parrish

Is molecular gas necessary for star formation?

• Authors: S. C. O. Glover, P. C. Clark

Eccentric Black Hole-Neutron Star Mergers

• Authors: Branson C. Stephens (1), William E. East (2), Frans Pretorius (2) ((1) UW-Milwaukee, (2) Princeton University)

Localizing compact binary inspirals on the sky using ground-based gravitational wave interferometers

• Authors: Samaya M. Nissanke, Jonathan L. Sievers, Neal Dalal, Daniel E. Holz

Discovery of an Energetic Pulsar Associated with SNR G76.9+1.0

• Authors: Z. Arzoumanian, E. V. Gotthelf, S. M. Ransom, S. Safi-Harb, R. Kothes, T. L. Landecker

Scaling Relations and Overabundance of Massive Clusters at z>~1 from Weak-Lensing Studies with HST

• Authors: M.J. Jee, K.S. Dawson, H. Hoekstra, S. Perlmutter, P. Rosati, M. Brodwin, N. Suzuki, B. Koester, M. Postman, L. Lubin, J. Meyers, S.A. Stanford, K. Barbary, F. Barrientos, P. Eisenhardt, H.C. Ford, D.G. Gilbank, M.D. Gladders, A. Gonzalez, D.W. Harris, X. Huang, C. Lidman, E.S. Rykoff, D. Rubin, A.L. Spadafora

Ultrahigh-energy neutrino-nucleon deep-inelastic scattering and the Froissart bound

• Authors: Alexey Yu. Illarionov, Bernd A. Kniehl, Anatoly V. Kotikov

Radiative Correction to the anti-nu_e (nu_e) Spectrum in beta-Decay

• Authors: A. Sirlin

Simplified Models for LHC New Physics Searches

• Authors: Daniele Alves, Nima Arkani-Hamed, Sanjay Arora, Yang Bai, Matthew Baumgart, Joshua Berger, Matthew Buckley, Bart Butler, Spencer Chang, Hsin-Chia Cheng, Clifford Cheung, R. Sekhar Chivukula, Won Sang Cho, Randy Cotta, Mariarosaria D'Alfonso, Sonia El Hedri, Rouven Essig (Editor), Jared A. Evans, Liam Fitzpatrick, Patrick Fox, Roberto Franceschini, Ayres Freitas, James S. Gainer, Yuri Gershtein, Richard Gray, Thomas Gregoire, Ben Gripaios, Jack Gunion, Tao Han, Andy Haas, Per Hansson, JoAnne Hewett, Dmitry Hits, Jay Hubisz, Eder Izaguirre, Jared Kaplan, Emanuel Katz, Can Kilic, Hyung-Do Kim, Ryuichiro Kitano, Sue Ann Koay, Pyungwon Ko, David Krohn, Eric Kuflik, Ian Lewis, Mariangela Lisanti (Editor), Tao Liu, Zhen Liu, Ran Lu, Markus Luty, Patrick Meade, David Morrissey, Stephen Mrenna, Mihoko Nojiri, Takemichi Okui, Sanjay Padhi, Michele Papucci, Michael Park, Myeonghun Park, Maxim Perelstein, Michael Peskin, Daniel Phalen, Keith Rehermann, Vikram Rentala, Tuhin Roy, Joshua T. Ruderman, Veronica Sanz, Martin Schmaltz, Stephen Schnetzer, Philip Schuster (Editor), Pedro Schwaller, Matthew D. Schwartz, Ariel Schwartzman, Jing Shao, Jessie Shelton, David Shih, Jing Shu, Daniel Silverstein, Elizabeth Simmons, Sunil Somalwar, Michael Spannowsky, Christian Spethmann, Matthew Strassler, Shufang Su, Tim Tait (Editor), Brooks Thomas, Scott Thomas, Natalia Toro (Editor), Tomer Volansky, Jay Wacker (Editor), Wolfgang Waltenberger, Itay Yavin, Felix Yu, Yue Zhao, Kathryn Zurek

tipa -- 5/16/2011

GRB 110328A/Swift J164449.3+573451: The Tidal Obliteration of a Deeply Plunging Star?

• Authors: J. K. Cannizzo, E. Troja, G. Lodato

The History of Star Formation in Galaxy Disks in the Local Volume as Measured by the ACS Nearby Galaxy Survey Treasury

• Authors: Benjamin F. Williams, Julianne J. Dalcanton, L. C. Johnson, Daniel R. Weisz, Anil C. Seth, Andrew Dolphin, Karoline M. Gilbert, Evan Skillman, Keith Rosema, Stephanie M. Gogarten, Jon Holtzman, Roelof S. de Jong

Thermal Instability in Gravitationally-Stratified Plasmas: Implications for Multi-Phase Structure in Clusters and Galaxy Halos

• Authors: Michael McCourt, Prateek Sharma, Eliot Quataert, Ian J. Parrish

classic papers of the week -- 195

Dynamical Model of Elementary Particles Based on an Analogy with Superconductivity. I

• Yoichiro Nambu, G. Jona-Lasinio (Enrico Fermi Institute for Nuclear Studies and the Department of Physics, The University of Chicago)

A survey of galaxy redshifts. V. The two-point position and velocity correlations

• Davis, M. (University of California, Berkeley); Peebles, P. J. E. (Princeton University)

The Magnetic Field of Massive Rotating Bodies

• Blackett, P. M. S. (The University, Manchester)

tipa -- 5/13/2011

Observation of Anisotropy in the Arrival Directions of Galactic Cosmic Rays at Multiple Angular Scales with IceCube

• Authors: IceCube Collaboration

The Effects of Patchy Reionization on Satellite Galaxies of the Milky Way

• Authors: Ragnhild Lunnan (1), Mark Vogelsberger (1), Anna Frebel (1), Lars Hernquist (1), Adam Lidz (2), Michael Boylan-Kolchin (3) ((1) Harvard/CfA, (2) UPenn, (3) UC Irvine)

Expanded Search for z~10 Galaxies from HUDF09, ERS, and CANDELS Data: Evidence for Accelerated Evolution at z>8?

• Authors: P. A. Oesch, R. J. Bouwens, G. D. Illingworth, I. Labbe, M. Trenti, V. Gonzalez, C. M. Carollo, M. Franx, P. G. van Dokkum, D. Magee

Chandra Detection of SN 2010da Four Months After Outburst: Evidence for a Supergiant X-ray Binary in NGC 300

• Authors: B. Binder, B. F. Williams, A. K. H. Kong, T. J. Gaetz, P. P. Plucinsky, J. J. Dalcanton, D. R. Weisz

Hubble-COS Observations of Galactic High-Velocity Clouds: Four AGN Sight Lines through Complex-C

• Authors: Michael Shull, Matthew Stevans, Charles Danforth, Steven Penton, Felix J. Lockman, Nahum Arav

Episodic mass loss in binary evolution to the Wolf-Rayet phase: Keck and HST proper motions of RY Scuti's nebula

• Authors: Nathan Smith, Robert D. Gehrz, Randy Campbell, Marc Kassis, David Le Mignant, Kawailehua Kuluhiwa, Alexei V. Filippenko

Dwarf galaxy formation with H2-regulated star formation

• Authors: M. Kuhlen, M. Krumholz, P. Madau, B. Smith, J. Wise

The decompression of the outer neutron star crust and r-process nucleosynthesis

• Authors: S. Goriely, N. Chamel, H.-T. Janka, J.M. Pearson

CASTRO: A New Compressible Astrophysical Solver. II. Gray Radiation Hydrodynamics

• Authors: W. Zhang (LBNL), L. Howell (LLNL), A. Almgren (LBNL), A. Burrows (Princeton), J. Bell (LBNL)

A Molecular Spiral Arm in the Far Outer Galaxy

• Authors: T. M. Dame, P. Thaddeus

tipa -- 5/12/2011

Lower-Luminosity Galaxies could reionize the Universe: Very Steep Faint-End Slopes to the UV Luminosity Functions at z>=5-8 from the HUDF09 WFC3/IR Observations

• Authors: R. J. Bouwens (Leiden), G. D. Illingworth (UCSC), P. A. Oesch (UCSC), M. Trenti (Colorado), I. Labbe (Leiden), M. Franx (Leiden), M. Stiavelli (STScI), C. M. Carollo (ETH Zurich), P. van Dokkum (Yale), D. Magee (UCSC)

Radiative transfer in a clumpy universe: IV. New synthesis models of the cosmic UV/X-ray background

• Authors: Francesco Haardt, Piero Madau

Pulsars with gigahertz-peaked spectra

• Authors: J. Kijak, W. Lewandowski, O. Maron, Y. Gupta, A. Jessner

Resonances Driven by a Neutrino Gyroscope and Collective Neutrino Oscillations in Supernovae

• Authors: Meng-Ru Wu, Yong-Zhong Qian (UMN)

Gravitational Wave Tests of General Relativity with the Parameterized Post-Einsteinian Framework

• Authors: Neil Cornish, Laura Sampson, Nico Yunes, Frans Pretorius

The Primordial Inflation Explorer (PIXIE): A Nulling Polarimeter for Cosmic Microwave Background Observations

• Authors: A. Kogut, D.J. Fixsen, D.T. Chuss, J. Dotson, E. Dwek, M. Halpern, G.F. Hinshaw, S.M. Meyer, S.H. Moseley, M.D. Seiffert, D.N. Spergel, E.J. Wollack

Large-scale Gadolinium-doped Water Cerenkov Detector for Non-Proliferation

• Authors: M. Sweany, A. Bernstein, N.S. Bowden, S. Dazeley, G. Keefer, R. Svoboda, M. Tripathi

tipa -- 5/11/2011

The VLT-FLAMES Tarantula Survey III: A very massive star in apparent isolation from the massive cluster R136

• Authors: Joachim M. Bestenlehner, Jorick S. Vink, G. Gräfener, F. Najarro, C. J. Evans, N. Bastian, A. Z. Bonanos, E. Bressert, P. A. Crowther, E. Doran, K. Friedrich, V. Hénault-Brunet, A. Herrero, A. de Koter, N. Langer, D. J. Lennon, J. Maíz Apellániz, H. Sana, I. Soszynski, W. D. Taylor

Turbulence in Global Simulations of Magnetized Thin Accretion Disks

• Authors: Kris Beckwith, Philip J. Armitage, Jacob B. Simon

Non-variable cosmologically distant gamma-ray emitters as an imprint of propagation of ultra-high-energy protons

• Authors: A.Yu. Prosekin, S.R. Kelner, F.A. Aharonian

tipa -- 5/10/2011

Hydrodynamic Interaction between the Be Star and the Pulsar in the TeV Binary PSR B1259-63/LS 2883

• Authors: Atsuo T. Okazaki, Shigehiro Nagataki, Tsuguya Naito, Akiko Kawachi, Kimitake Hayasaki, Stanley P. Owocki, Jumpei Takata

Mass and radius estimation for the neutron star in X-ray burster 4U 1820-30

• Authors: K. Kusmierek, J. Madej, E. Kuulkers

Onset of Fast Magnetic Reconnection in Partially Ionized Gases

• Authors: Leonid M. Malyshkin, Ellen G. Zweibel

A faint optical flash in dust-obscured GRB 080603A - implications for GRB prompt emission mechanisms

• Authors: C. Guidorzi, S. Kobayashi, D.A. Perley, G. Vianello, J.S. Bloom, P. Chandra, D.A. Kann, W. Li, C.G. Mundell, A. Pozanenko, J.X. Prochaska, K. Antoniuk, D. Bersier, A.V. Filippenko, D.A. Frail, A. Gomboc, E. Klunko, A. Melandri, S. Mereghetti, V. Rumyantsev, R.J. Smith, I.A. Steele, N.R. Tanvir, A. Volnova

Relativistic Equation of State for Core-Collapse Supernova Simulations

• Authors: H. Shen, H. Toki, K. Oyamatsu, K. Sumiyoshi

The energy source of the filaments around the giant galaxy NGC1275

• Authors: A.C. Fabian (1), J.S. Sanders (1), R.J.R.Williams (2), A. Lazarian (3), G.J. Ferland (4), R.M. Johnstone (1) ((1) Institute of Astronomy, University of Cambridge, UK, (2) AWE plc, Aldermaston, UK, (3) Astronomy Dept., University of Wisconsin, USA, Dept of Physics, University of Kentucky, USA)