tipa -- 4/25/2007

The distance and neutral environment of the massive stellar cluster Westerlund 1

• Authors: R. Kothes, S.M. Dougherty

Rigidity-dependent cosmic ray energy spectra in the knee region obtained with the GAMMA experiment

• Authors: A. P. Garyaka, R. M. Martirosov, S. V. Ter-Antonyan, N. Nikolskaya, Y. A. Gallant, L. Jones, J. Procureur

XMM-Newton X-ray Observations of the Wolf-Rayet Binary System WR 147

• Authors: S.L. Skinner, S.A. Zhekov, M. Guedel, W. Schmutz

tipa -- 4/24/2007

Hypervelocity stars and the environment of Sgr A*

• Authors: A. Sesana, F. Haardt, P. Madau

The Extragalactic Gamma Ray Background

• Authors: Charles D. Dermer (NRL)

Methanol masers as tools to study high-mass star formation

• Authors: Michele Pestalozzi

tipa -- 4/23/2007

Constraining GRB progenitor models by probing Wolf-Rayet wind geometries in the Large Magellanic Cloud

• Authors: Jorick S. Vink (Armagh Observatory)

Are We Typical?

• Authors: James B. Hartle, Mark Srednicki

classic papers of the week -- 17

The Particle Problem in the General Theory of Relativity

• A. Einstein, N. Rosen (Princeton, Inst. Advanced Study)

Structure in the COBE differential microwave radiometer first-year maps

• Smoot, G. F.; Bennett, C. L.; Kogut, A.; Wright, E. L.; Aymon, J.; Boggess, N. W.; Cheng, E. S.; de Amici, G.; Gulkis, S.; Hauser, M. G.; Hinshaw, G.; Jackson, P. D.; Janssen, M.; Kaita, E.; Kelsall, T.; Keegstra, P.; Lineweaver, C.; Loewenstein, K.; Lubin, P.; Mather, J.; Meyer, S. S.; Moseley, S. H.; Murdock, T.; Rokke, L.; Silverberg, R. F.; Tenorio, L.; Weiss, R.; Wilkinson, D. T.

Resonant Nuclear Scattering of Gamma-Rays: Theory and Preliminary Experiments

• P.B. Moon (Department of Physics, The University of Birmingham)

tipa -- 4/20/2007

Near-Infrared and X-ray Observations of the Enigmatic G70.7+1.2

• Authors: P. B. Cameron, S. R. Kulkarni (Caltech)

The Spectral Index Distribution of EGRET Blazars: Prospects for GLAST

• Authors: Tonia M. Venters, Vasiliki Pavlidou (KICP, U. Chicago)

Cosmological contraints to radiative dark-matter decay

• Authors: Le Zhang, Xuelei Chen, Marc Kamionkowski, Zongguo Si, Zheng Zheng

Ultra-High Energy Cosmic Rays and the GeV-TeV Diffuse Gamma-Ray Flux

• Authors: Oleg E. Kalashev (INR Moscow), Dmitry V. Semikoz, Guenter Sigl (APC, Paris)

Testing the gamma-ray burst variability/peak luminosity correlation on a Swift homogeneous sample

• Authors: D. Rizzuto (1), C. Guidorzi (1,2), P. Romano (1,2), S. Covino (2), S. Campana (2), M. Capalbi (3), G. Chincarini (1,2), G. Cusumano (4), D. Fugazza (2), V. Mangano (4), A. Moretti (2), M. Perri (3), G. Tagliaferri (2) ((1) Univ.Bicocca, (2) INAF-OABrera, (3) ASI-ASDC, (4) INAF-IASF Pa)

Antiproton and Positron Signal Enhancement in Mini-Spikes Scenarios

• Authors: P. Brun, G. Bertone, J. Lavalle, P. Salati, R. Taillet

MeV Dark Matter and Small Scale Structure

• Authors: Dan Hooper, Manoj Kaplinghat, Louis E. Strigari, Kathryn M. Zurek

Another Odd Thing About Unparticle Physics

• Authors: Howard Georgi (Harvard Univ)

tipa -- 4/19/2007

Swift observations of GRB 060614: an anomalous burst with a well behaved afterglow

• Authors: V. Mangano, S.T. Holland, D. Malesani, E. Troja, G. Chincarini, B. Zhang, V. La Parola, P.J. Brown, D.N. Burrows, S. Campana, M. Capalbi, G. Cusumano, M. Della Valle, N. Gehrels, P. Giommi, D. Grupe, C. Guidorzi, T. Mineo, A. Moretti, J.P. Osborne, S.B. Pandey, M. Perri, P. Romano, P.W.A. Roming, G. Tagliaferri

Hot Coal for Christmas: Dust Formation in the Swept-Up Shell Around The Peculiar Type Ib Supernova 2006jc

• Authors: Nathan Smith, Ryan J. Foley, Alexei V. Filippenko

Fundamentalist physics: why Dark Energy is bad for Astronomy

• Authors: Simon D.M. White

tipa -- 4/18/2007

Very High Energy Afterglow from Gamma-ray Bursts

• Authors: Yi-Zhong Fan, Tsvi Piran, Ramesh Narayan, Da-Ming Wei

Constraints on gamma-ray burst and supernova progenitors through circumstellar absorption lines. (II): Post-LBV Wolf-Rayet stars

• Authors: A. J. van Marle, N. Langer, G. garcia-Segura

Selection effects shaping the Gamma Ray Burst redshift distributions

• Authors: F. Fiore, D. Guetta, S. Piranomonte, V. D'Elia, L.A. Antonelli

Measurement of the Rate of Muon Capture in Hydrogen Gas and Determination of the Proton's Pseudoscalar Coupling $g_P$

• Authors: V.A. Andreev, T.I. Banks, T.A. Case, D.B. Chitwood, S.M. Clayton, K.M. Crowe, J. Deutsch, J. Egger, S.J. Freedman, V.A. Ganzha, T. Gorringe, F.E. Gray, D.W. Hertzog, M. Hildebrandt, P. Kammel, B. Kiburg, S. Knaack, P.A. Kravtsov, A.G. Krivshich, B. Lauss, K.L. Lynch, E.M. Maev, O.E. Maev, F. Mulhauser, C.S. Özben, C. Petitjean, G.E. Petrov, R. Prieels, G.N. Schapkin, G.G. Semenchuk, M.A. Soroka, V. Tishchenko, A.A. Vasilyev, A.A. Vorobyov, M.E. Vznuzdaev, P. Winter

Bone Cancer in Dinosaurs

• Authors: L.C. Natarajan, A.L. Melott, B.M. Rothschild, L.D. Martin (University of Kansas)

tipa -- 4/17/2007

Redefining the Missing Satellites Problem

• Authors: Louis E. Strigari, James S. Bullock, Manoj Kaplinghat, Juerg Diemand, Michael Kuhlen, Piero Madau

A discriminating probe of gravity at cosmological scales

• Authors: Pengjie Zhang (SHAO), Michele Liguori (Cambridge), Rachel Bean (Cornell), Scott Dodelson (Fermilab/Chicago)

Progenitors of Long Gamma-ray Bursts

• Authors: Melvyn B. Davies, Andrew J. Levan, Josefin Larsson, Andrew R. King, Andrew S. Fruchter

Improved Measurement of the Positive Muon Lifetime and Determination of the Fermi Constant

• Authors: MuLan Collaboration: D.B. Chitwood, T.I. Banks, M.J. Barnes, S. Battu, R.M. Carey, S. Cheekatmalla, S.M. Clayton, J. Crnkovic, K.M. Crowe, P.T. Debevec, S. Dhamija, W. Earle, A. Gafarov, K. Giovanetti, T.P. Gorringe, F.E. Gray, M. Hance, D.W. Hertzog, M.F. Hare, P. Kammel, B. Kiburg, J. Kunkle, B. Lauss, I. Logashenko, K.R. Lynch, R. McNabb, J.P. Miller, F. Mulhauser, C.J.G. Onderwater, C.S. Ozben, Q. Peng, C.C. Polly, S. Rath, B.L. Roberts, V. Tishchenko G.D. Wait, J. Wasserman, D.M. Webber P. Winter, P.A. Zolnierczuk

tipa -- 4/16/2007

The Peculiar Velocities of Local Type Ia Supernovae and their Impact on Cosmology

• Authors: James D. Neill (1), Michael J. Hudson (2), Alex Conley (3) ((1) California Institute of Technology, (2) University of Waterloo, (3) University of Toronto)

Resolving Diffuse Photon Anomalies with Dark Matter Decaying Now

• Authors: Jose A. R. Cembranos, Jonathan L. Feng, Louis E. Strigari

An SiO Maser Search off the Galactic Plane

• Authors: S. Deguchi, T. Fujii, Y. Ita, H. Imai, H. Izumiura, O. Kameya, N. Matsunaga, A. Miyazaki, A. Mizutani, Y. Nakada, J. Nakashima, A. Winnberg

Spectrum of cosmic rays, produced in supernova remnants

• Authors: E.G.Berezhko, H.J.Voelk

Cosmic Ménage à trois: The Origin of Satellites Galaxies On Extreme Orbits

• Authors: L. V. Sales, J. F. Navarro, M. G. Abadi, M. Steinmetz

classic papers of the week -- 16

On the gravitational field of a mass point according to Einstein's theory

• K. Schwarzschild

Selection Rules for the Dematerialization of a Particle Into Two Photons

• C. N. Yang (Chicago U., EFI)

Superfluidity and Superconductivity

• R.P. Feynman (Norman Bridge Laboratory of Physics, California Institute of Technology, Pasadena, California)

tipa -- 4/13/2007

A Search for Electron Neutrino Appearance at the Delta m**2 ~ 1 eV**2 Scale

• Authors: The MiniBooNE Collaboration

The VIMOS VLT Deep Survey. The Assembly History of the Stellar Mass in Galaxies: from the Young to the Old Universe

• Authors: L. Pozzetti, M. Bolzonella, F. Lamareille, G. Zamorani, P. Franzetti, O. Le Fèvre, A. Iovino, S. Temporin, O. Ilbert, S. Arnouts, S. Charlot, J. Brinchmann, E. Zucca, L. Tresse, M. Scodeggio, L. Guzzo, D. Bottini, B. Garilli, V. Le Brun, D. Maccagni, J.P. Picat, R. Scaramella, G. Vettolani, A. Zanichelli, C. Adami, S. Bardelli, A. Cappi, P. Ciliegi, T. Contini, S. Foucaud, I. Gavignaud, H.J. McCracken, B. Marano, C. Marinoni, A. Mazure, B. Meneux, R. Merighi, S. Paltani, R. Pellò, A. Pollo, M. Radovich, M. Bondi, A. Bongiorno, O. Cucciati, S. de la Torre, L. Gregorini, Y. Mellier, P. Merluzzi, D. Vergani, C.J. Walcher

GRB 061121: Broadband spectral evolution through the prompt and afterglow phases of a bright burst

• Authors: K.L. Page (1), R. Willingale (1), J.P. Osborne (1), B. Zhang (2), O. Godet (1), F.E. Marshall (3), A. Melandri (4), J.P. Norris (5,6), P.T. O'Brien (1), V. Pal'shin (7), E. Rol (1), P. Romano (8,9), R.L.C. Starling (1), P. Schady (10), S.A. Yost (11), S.D. Barthelmy (3), A.P. Beardmore (1), G. Cusumano (12), D.N. Burrows (13), M. De Pasquale (10), M. Ehle (14), P.A. Evans (1), N. Gehrels (3), M.R. Goad (1), S. Golenetskii (7), C. Guidorzi (8,9), C. Mundell (4), M.J. Page (10), G. Ricker (15), T. Sakamoto (3), B.E. Schaefer (16), M. Stamatikos (3), E. Troja (1,1)}, M.Ulanov (7), F. Yuan (11), H. Ziaeepour (9) ((1) University of Leicester, (2) University of Nevada, (3) NASA/GSFC, (4) Liverpool John Moores University, (5) University of Denver, (6) Stanford University, (7) Ioffe Physico-Technical Institute, (8) Osservatorio Astronomico di Brera, (9) Universita' di Milano-Bicocca, (10) MSSL, (11) University of Michigan, (12) INAF-IASF, Sezione di Palermo, (13) Pennsylvania State University, (14) XMM-Newton Science Operations Centre, (15) MIT, (16) Louisiana State University)

Exciting the Magnetosphere of the Magnetar CXOU J164710.2-455216 in Westerlund 1

• Authors: M. P. Muno, B. M. Gaensler, J. S. Clark, R. de Grijs, D. Pooley, I. R. Stevens, S. F. Portegies Zwart

tipa -- 4/12/2007

Prompt Emission of High Energy Photons from Gamma Ray Bursts

• Authors: Nayantara Gupta, Bing Zhang

Radio Emission from the Intermediate-mass Black Hole in the Globular Cluster G1

• Authors: James S. Ulvestad, Jenny E. Greene, Luis C. Ho

Enhanced Cosmological GRB Rates and Implications for Cosmogenic Neutrinos

• Authors: Hasan Yuksel, Matthew D. Kistler (Ohio State University)

tipa -- 4/11/2007

Contraction of Gravitational-Wave Packets Due to their Self-Gravity

Authors: Bence Kocsis, Abraham Loeb (Harvard)

The Mid-Infrared Emission of M87

Authors: E. S. Perlman (FIT, UMBC/JCA), R. E. Mason (Gemini), Christopher Packham (Florida), N. A. Levenson, M. Elitzur (Kentucky), Justin J. Schaefer (Florida), Masatoshi Imanishi (NAO), William B. Sparks (STScI), James Radomski (Gemini)

Double Neutron Stars: Evidence For Two Different Neutron-Star Formation Mechanisms

Authors: E.P.J. van den Heuvel (University of Amsterdam, University of California)

Dissecting the Cygnus Region with TeV Gamma Rays and Neutrinos

Authors: John F. Beacom, Matthew D. Kistler (Ohio State University)

tipa -- 4/10/2007

Does the Blazar Gamma-Ray Spectrum Harden with Increasing Flux? Analysis of 9 Years of EGRET Data

• Authors: Giridhar Nandikotkur, Keith M. Jahoda, R. C. Hartman, R. Mukherjee, P. Sreekumar, M. Böttcher, R. M. Sambruna, Jean H. Swank

Cosmogenic neutrinos as a probe of the transition from Galactic to extragalactic cosmic rays

• Authors: Hajime Takami, Kohta Murase, Shigehiro Nagataki, Katsuhiko Sato

Simulation of Ultra High Energy Neutrino Interactions in Ice and Water

• Authors: S.Bevan, S.Danaher, J.Perkin, S.Ralph, C.Rhodes, L.Thompson, T.Sloan, D.Waters

The VLT-FLAMES survey of massive stars: Wind properties and evolution of hot massive stars in the LMC

• Authors: M. R. Mokiem, A. de Koter, C. J. Evans, J. Puls, S. J. Smartt, P. A. Crowther, A. Herrero, N. Langer, D. J. Lennon, F. Najarro, M. R. Villamariz, J. S. Vink

Search for gravitational-wave bursts in LIGO data from the fourth science run

• Authors: LIGO Scientific Collaboration

tipa -- 4/9/2007

Spectral analysis of Swift long GRBs with known redshift

• Authors: J.I. Cabrera (1), C. Firmani (2,1), V. Avila-Reese (1), G. Ghirlanda (2), G. Ghisellini (2), L. Nava (2,3) ((1)U.N.A.M., (2)INAF-OAB, (3)Univ. Insubria)

Constraints on the Interactions between Dark Matter and Baryons from the X-ray Quantum Calorimetry Experiment

• Authors: Adrienne L. Erickcek (1), Paul J. Steinhardt (2), Dan McCammon (3), Patrick C. McGuire (4) ((1)Caltech, (2)Princeton University, (3)University of Wisconsin, (4)Washington University)

Extragalactic Radio Sources and the WMAP Cold Spot

• Authors: Lawrence Rudnick, Shea Brown, Liliya R. Williams

classic papers of the week -- 15

Origin of the Elements in Stars

• Hoyle, F.; Fowler, William A.; Burbidge, G. R.; Burbidge, E. M.

Are Mesons Elementary Particles?

• E. Fermi, Chen-Ning Yang (Chicago U., EFI)

Strange stars

• Charles Alcock (MIT) , Edward Farhi, Angela Olinto (MIT, LNS)

tipa -- 4/6/2007

Mapping the Youngest Galaxies to Redshift One

• Authors: Yuko Kakazu, Lennox L. Cowie, Esther M. Hu (Univ. of Hawaii, Inst. for Astronomy)

Flavor Composition and Energy Spectrum of Astrophysical Neutrinos

• Authors: Paolo Lipari, Maurizio Lusignoli, Davide Meloni

Long Gamma-Ray Burst Progenitors: Boundary Conditions and Binary Models

• Authors: E.P.J. van den Heuvel, S.-C. Yoon

Testing String Theory with CMB

• Authors: Renata Kallosh, Andrei Linde

tipa -- 4/5/2007

Extended solar emission - an analysis of the EGRET data

• Authors: Elena Orlando, Dirk Petry, Andrew Strong

Swift/XRT observes the fifth outburst of the periodic Supergiant Fast X-ray Transient IGR J11215-5952

• Authors: P. Romano (1,2), L. Sidoli (3), V. Mangano (4), S. Mereghetti (3), G. Cusumano (4) ((1) INAF-OABrera, (2) Univ.Bicocca, (3) INAF-IASF Mi, (4) INAF-IASF Pa)

tipa -- 4/4/2007

Constraints on the Self-Interaction Cross-Section of Dark Matter from Numerical Simulations of the Merging Galaxy Cluster 1E 0657-5

• Authors: Scott W. Randall, Maxim Markevitch, Douglas Clowe, Anthony H. Gonzalez, Marusa Bradac

Remnant evolution after a carbon-oxygen white dwarf merger

• Authors: Sung-Chul Yoon, Philipp Podsiadlowski, Stephan Rosswog

tipa -- 4/3/2007

Discovery of a point-like very-high-energy gamma-ray source in Monoceros

• Authors: F. Aharonian, et al

An online repository of Swift/XRT light curves of GRBs

• Authors: P.A. Evans (1), A.P. Beardmore (1), K.L. Page (1), L.G. Tyler (1), J.P. Osborne (1), M.R. Goad (1), P.T. O'Brien (1), L. Vetere (2), J. Racusin (2), D. Morris (2), D.N. Burrows (2), M. Capalbi (3), M. Perri (3), N. Gehrels (4), P. Romano (5,6) ((1) University of Leicester, (2) Pennsylvania State University, (3) ASI Science Data Center, (4) NASA/Goddard Space Flight Center, (5) INAF-Osservatorio Astronomico di Brera, (6) Universita' degli Studi di Milano)

The Return of a Static Universe and the End of Cosmology

• Authors: Lawrence M. Krauss (1,2), Robert J. Scherrer (2) ((1) Case Western Reserve University, (2) Vanderbilt University)