tipa -- 5/1/2009

A Unique Star in the Outer Halo of the Milky Way

• Authors: David K. Lai, Constance M. Rockosi, Michael Bolte, Jennifer A. Johnson, Timothy C. Beers, Young Sun Lee, Carlos Allende Prieto, Brian Yanny

Wavelength Accuracy of the Keck HIRES Spectrograph and Measuring Changes in the Fine Structure Constant

• Authors: Kim Griest, Jonathan B. Whitmore, Arthur M. Wolfe, J. Xavier Prochaska, J. Christopher Howk, Geoffrey W. Marcy

Synchrotron Emission from Elliptical Galaxies Consequent to AGN outbursts

• Authors: Y.-F. Jiang, L. Ciotti, J. P. Ostriker, A. Spitkovsky

How photon astronomy affects searches for continuous gravitational waves

• Authors: Benjamin J. Owen (Penn State)

Search for High Frequency Gravitational Wave Bursts in the First Calendar Year of LIGO's Fifth Science Run

• Authors: LIGO Scientific Collaboration: B. Abbott, et al

tipa -- 4/30/2009

Measurement of the Flux of Ultra High Energy Cosmic Rays by the Stereo Technique

• Authors: R.U. Abbasi, T. Abu-Zayyad, M. Al-Seady, M. Allen, J.F. Amann, G. Archbold, K. Belov, J. W. Belz, D. R. Bergman, S.A. Blake, O.A. Brusova, G.W. Burt, C. Cannon, Z. Cao, W. Deng, Y.Fedorova, J. Findlay, C.B. Finley, R.C. Gray, W.F. Hanlon, C.M. Hoffman, M.H. Holzscheiter, G. Hughes, P. Huntemeyer, D. Ivanov, B.F. Jones, C.C.H. Jui, K. Kim, M.A. Kirn, E.C. Loh, M.M. Maestas, N. Manago, L.J. Marek, K. Martens, J.A.J. Matthews, J. N. Matthews, S.A. Moore, A. O'Neil, C.A. Painter, L. Perera, K. Reil, R. Riehle, M.D. Roberts, D. Rodriguez, M. Sasaki, S.R. Schnetzer, L.M. Scott, G. Sinnis, J.D. Smith, R. Snow, P. Sokolsky, R.W. Springer, B.T. Stokes, S.R. Stratton, J.R. Thomas, S.B. Thomas, G.B. Thomson, D. Tupa, L.R. Wiencke, A. Zech, B.K. Zhang, X. Zhang, Y.Zhang

Star Formation Histories, Abundances and Kinematics of Dwarf Galaxies in the Local Group

• Authors: E. Tolstoy, V. Hill, M. Tosi

Discrete sources as the origin of the Galactic X-ray ridge emission

• Authors: Revnivtsev M. (1,2), Sazonov S. (2,3), Churazov E. (3,2), Forman W. (4), Vikhlinin A. (4,2), Sunyaev R. (3,2) ((1) Excellence Cluster Universe, Garching, Germany; (2) IKI, Moscow, Russia, (3) MPA, Garching, Germany, (4) CfA, Cambridge, USA)

Seeing through the String Landscape - a String Hunter's Companion in Particle Physics and Cosmology

• Authors: Dieter Lust

tipa -- 4/29/2009

Pulsed Gamma-rays from the millisecond pulsar J0030+0451 with the Fermi Large Area Telescope

• Authors: Fermi/LAT Collaboration

Stochastic Nature of Gravitational Waves from Supernova Explosions with Standing Accretion Shock Instability

• Authors: Kei Kotake, Wakana Iwakami, Naofumi Ohnishi, Shoichi Yamada

Early Fermi Gamma-ray Space Telescope Observations of the Quasar 3C 454.3

• Authors: Fermi/LAT Collaboration: A. A. Abdo, et al

Correlations between Ultrahigh Energy Cosmic Rays and Infrared-Luminous Galaxies

• Authors: Glennys R. Farrar, Andreas A. Berlind, Ingyin Zaw

Angular Momentum Transfer and Lack of Fragmentation in Self-Gravitating Accretion Flows

• Authors: Mitchell Begelman, Isaac Shlosman (JILA/CU Boulder)

tipa -- 4/28/2009

Protohalo Constraints to the Resonant Annihilation of Dark Matter

• Authors: Francis-Yan Cyr-Racine (UBC), Stefano Profumo (UCSC), Kris Sigurdson (UBC)

Proton-air cross section measurement with the ARGO-YBJ cosmic ray experiment

• Authors: The ARGO-YBJ Collaboration

tipa -- 4/27/2009

Phase transitions and He-synthesis driven winds in neutrino cooled accretion disks: prospects for late flares in short gamma-ray bursts

• Authors: William H. Lee (1), Enrico Ramirez-Ruiz (2), Diego-Lopez-Camara (1) ((1) Instituto de Astronomia, UNAM, (2) Dept. of Astronomy and Astrophysics, UC Santa Cruz)

Inverse Compton constraints on the Dark Matter e+e- excesses

• Authors: Marco Cirelli, Paolo Panci

Identifying Nearby UHECR Accelerators using UHE (and VHE) Photons

• Authors: A. M. Taylor, J. A. Hinton, P. Blasi, M. Ave

Variability Timescales in the M87 Jet: Signatures of E-Squared Losses, Discovery of a Quasi-period in HST-1, and the Site of TeV Flaring

• Authors: D. E. Harris (SAO), C. C. Cheung (GSFC), Lukasz Stawarz (KIP/Stanford), J. A. Biretta (STScI), E. S. Perlman (FIT)

classic papers of the week -- 102

Symmetries of baryons and mesons

• Murray Gell-Mann (California Institute of Technology, Pasadena, CA)

Gravitational Collapse: The Role of General Relativity

• R. Penrose (Department of Mathematics, Birkbeck College - London)

The Origin of the Moon

• Cameron, A. G. W.; Ward, W. R. (Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge, MA)

Satellite-sized planetesimals and lunar origin

• Hartmann, W. K.; Davis, D. R. (Planetary Science Institute, Tucson, AZ)

tipa -- 4/24/2009

Hubble Space Telescope observations of an extraordinary flare in the M87 jet

• Authors: Juan P. Madrid (McMaster U. Canada)

Multiple Spectral Splits of Supernova Neutrinos

• Authors: Basudeb Dasgupta, Amol Dighe, Georg G. Raffelt, Alexei Yu. Smirnov

tipa -- 4/23/2009

Detection of Very High Energy radiation from HESS J1908+063 confirms the Milagro unidentified source MGRO J1908+06

• Authors: F. Aharonian, et al. (HESS Collaboration)

Model in-dependence of electron and positron flux from Dark Matter

• Authors: Michael Kuhlen, Dmitry Malyshev

tipa -- 4/22/2009

Measurement of the \nu_\mu charged current \pi^+ to quasi-elastic cross section ratio on mineral oil in a 0.8 GeV neutrino beam

• Authors: A. A. Aguilar-Arevalo, C. E. Anderson, A. O. Bazarko, S. J. Brice, B. C. Brown, L. Buge, J. Cao, L. Coney, J. M. Conrad, D. C. Cox, A. Curioni, Z. Djurcic, D. A. Finley, B. T. Fleming, R. Ford, F. G. Garcia, G. T. Garvey, C. Green, J. A. Green, T. L. Hart, E. Hawker, R. Imlay, R. A. Johnson, G. Karagiorgi, P. Kasper, T. Katori, T. Kobilarcik, I. Kourbanis, S. Koutsoliotas, E. M. Laird, S. K. Linden, J. M. Link, Y. Liu, Y. Liu, W. C. Louis, K. B. M. Mahn, W. Marsh, V. T. McGary, G. McGregor, W. Metcalf, P. D. Meyers, F. Mills, G. B. Mills, J. Monroe, C. D. Moore, R. H. Nelson, P. Nienaber, J. A. Nowak, B. Osmanov, S. Ouedraogo, R. B. Patterson, D. Perevalov, C. C. Polly, E. Prebys, J. L. Raaf, H. Ray, B. P. Roe, A. D. Russell, V. Sandberg, R. Schirato, D. Schmitz, M. H. Shaevitz, F. C. Shoemaker, D. Smith, M. Soderberg, M. Sorel, P. Spentzouris, J. Spitz, I. Stancu, R. J. Stefanski, M. Sung, H. A. Tanaka, R. Tayloe, M. Tzanov, R. Van de Water, M. O. Wascko, D. H. White, M. J. Wilking, H. J. Yang, G. P. Zeller, E. D. Zimmerman

On the constancy of the high-mass slope of the initial mass function

• Authors: Paul C. Clark, Simon C.O. Glover, Ian A. Bonnell, Ralf S. Klessen

The Pulsar Contribution to the Gamma-Ray Background

• Authors: C.-A. Faucher-Giguere, Abraham Loeb (Harvard University)

tipa -- 4/21/2009

Very high efficiency photospheric emission in long duration gamma-ray bursts

• Authors: Davide Lazzati (NCSU), Brian J. Morsony (Wisconsin), Mitch Begelman (JILA)

On The Maximum Mass of Stellar Black Holes

• Authors: Krzysztof Belczynski, Tomasz Bulik, Chris L. Fryer, Ashley Ruiter, Jorick S. Vink, Jarrod R. Hurley

The Scientific Life Of John Bahcall

• Authors: W. C. Haxton

Molecular Clouds as Cosmic-Ray Barometers

• Authors: S. Casanova, F. A. Aharonian, Y. Fukui, S. Gabici, D. I. Jones, A. Kawamura, T. Onishi, G. Rowell, K. Torii, H. Yamamoto

Evidence of a non-baryonic composition in GRB 080916C

• Authors: Bing Zhang (UNLV), Asaf Pe'er (STScI)

The density, the cosmic microwave background, and the proton-to-electron mass ratio in a cloud at redshift 0.9

• Authors: C. Henkel, K.M. Menten, M.T. Murphy, N. Jethava, V.V. Flambaum, J.A. Braatz, S. Muller, J. Ott, R.Q. Mao

The Thermal Abundance of Semi-Relativistic Relics

• Authors: Manuel Drees, Mitsuru Kakizaki, Suchita Kulkarni

Relativistic Cyclotron Radiation Detection of Tritium Decay Electrons as a New Technique for Measuring the Neutrino Mass

• Authors: Benjamin Monreal (1), Joseph A. Formaggio (2) ((1) University of California, Santa Barbara, (2) Massachusetts Institute of Technology)

tipa -- 4/20/2009

Detection of Gamma-ray Emission from the Eta-Carinae Region

• Authors: M. Tavani, S. Sabatini, E. Pian, A. Bulgarelli, P. Caraveo, R.F. Viotti, M.F. Corcoran, A. Giuliani, C. Pittori, F. Verrecchia, S. Vercellone, S. Mereghetti, A. Argan, G. Barbiellini, F. Boffelli, P. W. Cattaneo, A. W. Chen, V. Cocco, F. D'Ammando, E. Costa, G. De Paris, E. Del Monte, G. Di Cocco, I. Donnarumma, Y. Evangelista, A. Ferrari, M. Feroci, M. Fiorini, T. Froysland, F. Fuschino, M. Galli, F. Gianotti, C. Labanti, I. Lapshov, F. Lazzarotto, P. Lipari, F. Longo, M. Marisaldi, M. Mastropietro, E. Morelli, E. Moretti, A. Morselli, L. Pacciani, A. Pellizzoni, F. Perotti, G. Piano, P. Picozza, M. Pilia, G. Porrovecchio, G. Pucella, M. Prest, M. Rapisarda, A. Rappoldi, A. Rubini, P. Soffitta, M. Trifoglio, A. Trois, E. Vallazza, V. Vittorini, A. Zambra, D. Zanello, P. Santolamazza, P. Giommi, S. Colafrancesco, L.A. Antonelli, L. Salotti

On electromagnetic instabilities at ultra-relativistic shock waves

• Authors: Martin Lemoine (IAP), Guy Pelletier (LAOG)

Constraints on the Extragalactic Background Light from Very High Energy Gamma-Ray Observations of Blazars

• Authors: Justin D. Finke, Soebur Razzaque

classic papers of the week -- 101

Resonant amplification of neutrino oscillations in matter and solar neutrino spectroscopy

• S.P. Mikheev, A.Yu. Smirnov (Institute for Nuclear Research of Academy of Sciences, 60th October Anniversary prosp. 7a, 117 342 Moscow, USSR)

The Story of Helium

• Part II

• J. Norman Lockyer, C.B., F.R.S.

A Letter from the Reverend Mr. James Bradley Savilian Professor of Astronomy at Oxford, and F.R.S. to Dr.Edmond Halley Astronom. Reg. &c. Giving an Account of a New Discovered Motion of the Fix'd Stars

• James Bradley

tipa -- 4/17/2009

Discovery of a bright radio transient in M82: a new radio supernova?

• Authors: A. Brunthaler (1), K.M. Menten (1), M.J. Reid (2), C. Henkel (1), G.C. Bower (3), H. Falcke (4,5) ((1) Max-Planck-Institut fuer Radioastronomie, (2) Harvard-Smithsonian Center for Astrophysics, (3) UC Berkeley (4) Universiteit Nijmegen, (5) ASTRON)

The first outburst of the new magnetar candidate SGR 0501+4516

• Authors: Nanda Rea, GianLuca Israel, Roberto Turolla, Paolo Esposito, Sandro Mereghetti, Diego Gotz, Silvia Zane, Andrea Tiengo, Kevin Hurley, Marco Feroci, Martin Still, Vladimir Yershov, Christoph Winkler, Rosalba Perna, Federico Bernardini, Pietro Ubertini, Luigi Stella, Sergio Campana, Michiel van der Klis, Peter M. Woods

tipa -- 4/16/2009

Chandra observation of the relativistic binary J1906+0746

• Authors: O. Kargaltsev, G. G. Pavlov

Feedback Effects of First Supernovae on the Neighboring Dark Matter Halos

• Authors: Masaru Sakuma, Hajime Susa

Cosmic Ray Proton Background Could Explain ATIC Electron Excess

• Authors: A.R. Fazely, R.M. Gunasingha, S.V. Ter-Antonyan

tipa -- 4/15/2009

Hitting the Bull's-eye: The Radial Profile of Accretion and Star Formation in the Milky Way

• Authors: J. E. G. Peek

The Effects of Radiative Transfer on Low-Mass Star Formation

• Authors: S. S. R. Offner, R. I. Klein, C. F. McKee, M. R. Krumholz

tipa -- 4/14/2009

A Search for Electron Antineutrino Appearance at the $\Delta m^2 \sim$ 1 $\mathrm{eV}^{2}$ Scale

• Authors: A. A. Aguilar-Arevalo, C. E. Anderson, S. J. Brice, B. C. Brown, L. Bugel, J. M. Conrad, Z. Djurcic, B. T. Fleming, R. Ford, F. G. Garcia, G. T. Garvey, J. Gonzales, J. Grange, C. Green, J. A. Green, R. Imlay, R. A. Johnson, G. Karagiorgi, T. Katori, T. Kobilarcik, S. K. Linden, W. C. Louis, K. B. M. Mahn, W. Marsh, C. Mauger, V. T. McGary, W. Metcalf, G. B. Mills, C. D. Moore, J. Mousseau, R. H. Nelson, P. Nienaber, J. A. Nowak, B. Osmanov, Z. Pavlovic, D. Perevalov, C. C. Polly, H. Ray, B. P. Roe, A. D. Russell, M. H. Shaevitz, M. Sorel, J. Spitz, I. Stancu, R. J. Stefanski, R. Tayloe, M. Tzanov, R. G. Van de Water, M. O. Wascko, D. H. White, M. J. Wilking, G. P. Zeller, E. D. Zimmerman

Short Gamma Ray Bursts and their Afterglow Signatures in Dense Stellar Systems

• Authors: Rion K. Parsons, Enrico Ramirez-Ruiz, William H. Lee

Episodic Random Accretion and the Cosmological Evolution of Supermassive Black Hole Spins

• Authors: J.-M. Wang (1), C. Hu (1), Y.-R. Li (1), Y.-M. Chen (1), A. R. King (2), A. Marconi (3), L. C. Ho (4), C.-S. Yan (1), R. Staubert (5), S. Zhang (1) (1 IHEP, Beijing; 2 Leicester; 3 Florence, Italy; 4 OCIW, USA; 5 Tuebingen, Germany)

Fermi Discovery of Gamma-Ray Emission from NGC 1275

• Authors: The Fermi/LAT Collaboration: A. A. Abdo, et al, H.D. Aller, M.F. Aller, K.I. Kellermann, Y.Y. Kovalev, Y.A. Kovalev, M. L. Lister, A. B. Pushkarev

The Breaking Strain of Neutron Star Crust and Gravitational Waves

• Authors: C. J. Horowitz (Indiana), Kai Kadau (LANL)

Big Bang Nucleosynthesis: The Strong Force meets the Weak Anthropic Principle

• Authors: J. MacDonald, D. J. Mullan

tipa -- 4/13/2009

Luminous Thermal Flares from Quiescent Supermassive Black Holes

• Authors: Suvi Gezari, Tim Heckman, S. Bradley Cenko, Michael Eracleous, Karl Forster, Thiago S. Goncalves, D. Chris Martin, Patrick Morrissey, Susan G. Neff, Mark Seibert, David Schiminovich, Ted K. Wyder

Supernova Propagation And Cloud Enrichment: A new model for the origin of $^{60}$Fe in the early solar system

• Authors: M. Gounelle, A. Meibom, P. Hennebelle, S.-I. Inutsuka

Suzaku Detection of Super-hard X-ray Emission from the Classical Nova V2491 Cygni

• Authors: D. Takei, M. Tsujimoto, S. Kitamoto, J.-U. Ness, J. J. Drake, H. Takahashi, K. Mukai

classic papers of the week -- 100

On gamma-ray astronomy

• P. Morrison (Department of Physics, Cornell University, Ithaca, NY)

Remarks on the unified model of elementary particles

• Z. Maki, M. Nakagawa, S. Sakata (Institute for Theoretical Physics, Nagoya University)

Game Theory

• Herman Kahn, Irwin Mann (RAND Corporation)

tipa -- 4/10/2009

The molecular gas content of z > 6.5 Lyman-alpha emitters

• Authors: Jeff Wagg, Nissim Kanekar, Chris Carilli (NRAO-Socorro)

tipa -- 4/9/2009

Over half of the far-infrared background light comes from galaxies at z >= 1.2

• Authors: Mark J. Devlin, Peter A. R. Ade, Itziar Aretxaga, James J. Bock, Edward L. Chapin, Matthew Griffin, Joshua O. Gundersen, Mark Halpern, Peter C. Hargrave, David H. Hughes, Jeff Klein, Gaelen Marsden, Peter G. Martin, Philip Mauskopf, Lorenzo Moncelsi, Calvin B. Netterfield, Henry Ngo, Luca Olmi, Enzo Pascale, Guillaume Patanchon, Marie Rex, Douglas Scott, Christopher Semisch, Nicholas Thomas, Matthew D. P. Truch, Carole Tucker, Gregory S. Tucker, Marco P. Viero, Donald V. Wiebe

BLAST: A Far-Infrared Measurement of the History of Star Formation

• Authors: Enzo Pascale, Peter A. R. Ade, James J. Bock, Edward L. Chapin, Mark J. Devlin, Simon Dye, Steve A. Eales, Matthew Griffin, Joshua O. Gundersen, Mark Halpern, Peter C. Hargrave, David H. Hughes, Jeff Klein, Gaelen Marsden, Philip Mauskopf, Lorenzo Moncelsi, Calvin B. Netterfield, Luca Olmi, Guillaume Patanchon, Marie Rex, Douglas Scott, Christopher Semisch, Nicholas Thomas, Matthew D. P. Truch, Carole Tucker, Gregory S. Tucker, Marco P. Viero, Donald V. Wiebe

Suzaku Observations of PSR B1259-63: A New Manifestation of Relativistic Pulsar Wind

• Authors: Yasunobu Uchiyama (SLAC/KIPAC), Takaaki Tanaka (SLAC/KIPAC), Tadayuki Takahashi (ISAS/JAXA), Koji Mori (Miyazaki U.), Kazuhiro Nakazawa (U. Tokyo)

The Population of Viscosity- and Gravitational Wave-Driven Supermassive Black Hole Binaries Among Luminous AGN

• Authors: Zoltán Haiman (Columbia University), Bence Kocsis (IAS, Princeton; Harvard University; and Eötvös Loránd University), Kristen Menou (Columbia University)

Constraining Emission Models of Luminous Blazar Sources

• Authors: Marek Sikora (CAMK), Lukasz Stawarz (SLAC/KIPAC), Rafal Moderski (CAMK), Krzysztof Nalewajko (CAMK), Greg Madejski (SLAC/KIPAC)

tipa -- 4/8/2009

Exploring short gamma-ray bursts as gravitational-wave standard sirens

• Authors: Samaya Nissanke, Scott A. Hughes, Daniel E. Holz, Neal Dalal, Jonathan L. Sievers

Milagro Observations of TeV Emission from Galactic Sources in the Fermi Bright Source List

• Authors: A. A. Abdo, B. T. Allen, T. Aune, D. Berley, C. Chen, G. E. Christopher, T. DeYoung, B. L. Dingus, R. W. Ellsworth, M. M. Gonzalez, J. A. Goodman, E. Hays, C. M. Hoffman, P. H. Huentemeyer, B. E. Kolterman, J. T. Linnemann, J. E. McEnery, T. Morgan, A. I. Mincer, P. Nemethy, J. Pretz, J. M. Ryan, P. M. Saz Parkinson, A. Shoup, G. Sinnis, A. J. Smith, V. Vasileiou, G. P. Walker, D. A. Williams, G. B. Yodh

The Core-collapse rate from the Supernova Legacy Survey

• Authors: G. Bazin (1), N. Palanque-Delabrouille (1), J. Rich (1), V. Ruhlmann-Kleider (1), E. Aubourg (1,2), L. Le Guillou (3), P. Astier (3), C. Balland (3,4), S. Basa (5), R. G. Carlberg (7), A. Conley (7), D. Fouchez (8), J. Guy (3), D. Hardin (3), I. M. Hook (10), D. A. Howell (7), R. Pain (3), K. Perrett (7), C. J. Pritchet (9), N. Regnault (3), M. Sullivan (10), P. Antilogus (3), V. Arsenijevic (11), S. Baumont (3), S. Fabbro (11), J. Le Du (8), C. Lidman (12), M. Mouchet (2,6), A. Mourão (11), E. S. Walker (10)

tipa -- 4/7/2009

Cosmic Rays from the Knee to the Highest Energies

• Authors: J. Bluemer, R. Engel, J.R. Hoerandel

The cosmic ray lepton puzzle in the light of cosmological N-body simulations

• Authors: Pierre Brun, Timur Delahaye, Juerg Diemand, Stefano Profumo, Pierre Salati

High-energy antiprotons from old supernova remnants

• Authors: Pasquale Blasi, Pasquale D. Serpico

Neutrino flavour transformation in supernovae

• Authors: Huaiyu Duan (INT, U of Washington), James P Kneller (UMN, U of Paris-XI)

tipa -- 4/6/2009

The Chandra Deep Protocluster Survey: Ly-alpha Blobs are powered by heating, not cooling

• Authors: J. E. Geach (1), D. M. Alexander (1), B. D. Lehmer (1), Ian Smail (1), Y. Matsuda (1), S. C. Chapman (2), C. A. Scharf (3), R. J. Ivison (4), M. Volonteri (5), T. Yamada (6), A. W. Blain (7), R. G. Bower (1), F. E. Bauer (3), A. Basu-Zych (3) ((1) Durham, (2) IoA Cambridge/Victoria, (3) Columbia, (4) SUPA/ATC Edinburgh, (5) Michigan Ann Arbor, (6) NAOJ, (7) Caltech)

classic papers of the week -- 99

On a Relativistically Invariant Formulation of the Quantum Theory of Wave Fields

• Tomonaga, S.

Dynamics of the Interplanetary Gas and Magnetic Fields

• Parker, E. N. (Enrico Fermi Institute for Nuclear Studies, University of Chicago)

Lunar Bases and Space Activities of the 21st Century

tipa -- 4/3/2009

Looking Into the Fireball: ROTSE-III and Swift Observations of Early GRB Afterglows

• Authors: E. S. Rykoff (UCSB), F. Aharonian (MPIK), C. W. Akerlof (UMich), M. C. B. Ashley (UNSW), S. D. Barthelmy (GSFC), H. A. Flewelling (UMich), N. Gehrels (GSFC), E. Gogus (Sabanci), T. Guver (Arizona), U. Kiziloglu (METU), H. A. Krimm (GSFC, USRA), T. A. McKay (UMich), M. Ozel (Cag), A. Phillips (UNSW), R. M. Quimby (Caltech), G. Rowell (Adelaide), W. Rujopakarn (Steward), B. E. Schaefer (LSU), D. A. Smith (Guilford), W. T. Vestrand (LANL), J. C. Wheeler (UTexas), J. Wren (LANL), F. Yuan (UMich), S. A. Yost (CSB/SJU)

H.E.S.S. upper limit on the very high energy gamma-ray emission from the globular cluster 47 Tucanae

• Authors: HESS collaboration: F. Aharonian, et al

Stellar and total baryon mass fractions in groups and clusters since redshift 1

• Authors: S.Giodini (1), D. Pierini (1), A. Finoguenov (1,2), G. W. Pratt (1), H. Boehringer (1), A. Leauthaud (7), L. Guzzo (3), H. Aussel (13), M. Bolzonella (18), P. Capak (4,14), M. Elvis (5), G. Hasinger (17), O. Ilbert (6), J. S.Kartaltepe (6), A. M. Koekemoer (16), S. J. Lilly (8), H. J. McCracken (9), M. Salvato (14), D. B. Sanders (6), N. Z. Scoville (4), S. Sasaki (10,11), V. Smolcic (14), Y. Taniguchi (12), D. Thompson (14,15), the COSMOS collaboration ((1) Max Planck Institut fuer Extraterrestrische Physik,(2) University of Maryland,(3) INAF-Osservatorio Astronomico di Brera, (4)Spitzer Science Center,(5) Harvard-Smithsonian Ctr. for Astrophysics,(6)Institute for Astronomy, University of Hawaii, (7) LBNL & Berkeley Center for Cosmological Physics, (8) ETH Zurich,(9) Institut d Astrophysique de Paris, (10) Tohoku University, Japan,(11) Ehime University,(12) Research Center for Space and Cosmic Evolution, Ehime University,(13) AIM Paris,(14) California Institute of Technology,(15)Large Binocular Telescope Observatory,(16) Space Telescope Science Institute,(17)Max-Planck-Institut fuer Plasmaphysik,(18) INAF - Bologna Astronomical Observatory)

tipa -- 4/2/2009

Fermi Observations of High-Energy Gamma-Ray Emission from GRB 080916C

• Authors: The Fermi LAT and Fermi GBM Collaborations

Early assembly of the most massive galaxies

• Authors: Chris A. Collins (LJMU), John P. Stott, Matt Hilton, Scott T. Kay, S. Adam Stanford, Michael Davidson, Mark Hosmer, Ben Hoyle, Andrew Liddle, Ed Lloyd-Davies, Robert G. Mann, Nicola Mehrtens, Christopher J. Miller, Robert C. Nichol, A. Kathy Romer, Martin Sahlen, Pedro T. P. Viana, Michael J. West

Nature article

Approaches to Understanding Cosmic Acceleration

• Authors: Alessandra Silvestri, Mark Trodden

Evidence of Asymmetry in SN 2007rt, a Type IIn Supernova

• Authors: C. Trundle (1), A. Pastorello (1), S. Benetti (2), R. Kotak (1), S. Valenti (1), I. Agnoletto (2), F. Bufano (2), M. Dolci (3), N. Elias-Rosa (4), T. Greiner (5), D. Hunter (1), F.P. Keenan (1), V. Lorenzi (6), K. Maguire (1), S. Taubenberger (7) ((1) Queen's University Belfast, (2) INAF Osservatorio Astronomico di Padova, (3) Spitzer Science Center, (4) INAF Osservatorio Astronomico di Collurania, (5) SLOOH Telescopes, (6) TNG, (7) Max-Planck-Institut fur Astrophysik)