tipa -- 3/29/2007

A new method of determining the initial size and Lorentz factor of gamma-ray burst fireballs using a thermal emission component

• Authors: Asaf Pe'er, Felix Ryde, Ralph A.M.J. Wijers, Peter Mészáros, Martin J. Rees

Cosmic ray composition at high energies: Results from the TRACER project

• Authors: P.J. Boyle, M. Ave, F. Gahbauer, C. Hoeppner, J. Hoerandel, M. Ichimura, D. Mueller, A. Romero-Wolf

tipa -- 3/28/2007

A giant outburst two years before the core-collapse of a massive star

• Authors: A. Pastorello, S. J. Smartt, S. Mattila, J. J. Eldridge, D. Young, K. Itagaki, H. Yamaoka, H. Navasardyan, S. Valenti, F. Patat, I. Agnoletto, T. Augusteijn, S. Benetti, E. Cappellaro, T. Boles, J.-M. Bonnet-Bidaud, M.T. Botticella, F. Bufano, C. Cao, J. Deng, M. Dennefeld, N. Elias-Rosa, A. Harutyunyan, F. P. Keenan, T. Iijima, V. Lorenzi, P. A. Mazzali, X. Meng, S. Nakano, T.B. Nielsen, J. V. Smoker, V. Stanishev, M. Turatto, D. Xu, L. Zampieri

Probing the ISM Near Star Forming Regions with GRB Afterglow Spectroscopy: Gas, Metals, and Dust

• Authors: Jason X. Prochaska (1), Hsiao-Wen Chen (2), Miroslava Dessauges-Zavadsky (3), Joshua S. Bloom (4) ((1) UCO/Lick Observatory, (2) U Chicago, (3) Observatoire de Geneve, (4) UC Berkeley)

Missing Molecular Hydrogen and the Physical Conditions of GRB Host Galaxies

• Authors: Jason Tumlinson (1), Jason X. Prochaska (2), Hsiao-Wen Chen (3), Miroslava Dessauges-Zavadsky (4), Joshua S. Bloom (5) ((1) Yale University, (2) UCO/Lick Observatory, (3) U. Chicago, (4) Observatoire de Geneve, (5) UC Berkeley)

New evidence on the origin of the microquasar GRO J1655-40

• Authors: J.A. Combi, L. Bronfman, I.F. Mirabel

Are Swift gamma-ray bursts consistent with the Ghirlanda relation?

• Authors: S. Campana (1), C. Guidorzi (2,1), G. Tagliaferri (1), G. Chincarini (2,1), A. Moretti (1), D. Rizzuto (2,1), P. Romano (1,2) (1, Osservatorio Astronomico di Brera), (2, Universita` degli studi di Milano-Bicocca)

Connecting the primordial and Galactic deuterium abundances

• Authors: Gary Steigman (1), Donatella Romano (2), Monica Tosi (2) ((1) The Ohio State University; (2) INAF, Osservatorio Astronomico di Bologna)

The Post-Burst Awakening of the Anomalous X-ray Pulsar in Westerlund 1

• Authors: G.L. Israel, S. Campana, S. Dall'Osso, M. P. Muno, J. Cummings, R. Perna, L. Stella

GRO J1744-28, search for the counterpart: infrared photometry and spectroscopy

• Authors: Andrew J. Gosling (1), Reba M. Bandyopadhyay (2), S.A. Farrell (3,4), James C.A. Miller-Jones (5) ((1) University of Oxford, (2) University of Florida, (3) UNSW at ADFA, Australia, (4) CESR, (5) University of Amsterdam)

Optical studies of the ultraluminous X-ray source NGC1313 X-2

• Authors: Jifeng Liu (Harvard-Smithsonian, CfA), Joel Bregman (U. of Michigan), Jon Miller (U. of Michigan), Philip Kaaret (U. of Iowa)

tipa -- 3/27/2007

Early Optical Polarization of a Gamma Ray Burst Afterglow

• Authors: Carole G. Mundell (1), Iain A. Steele (1), Robert J. Smith (1), Shiho Kobayashi (1) Andrea Melandri (1), Cristiano Guidorzi (1,2,3), Andreja Gomboc (4) Chris J. Mottram (1), David Clarke (5), Alessandro Monfardini (1,6), David Carter (1), David Bersier (1). ((1) Astrophysics Research Institute, Liverpool John Moores University. (2)Dipartimento di Fisica, Universita di Milano-Bicocca, Milano, (3) INAF-Osservatorio Astronomico di Brera, Italy. (4)Faculty of Mathematics and Physics, University in Ljubljana, (5)Department of Physics and Astronomy, University of Glasgow, (6)CNRS, Institut Neel, Grenoble, France.)

Signatures of the extragalactic cosmic-ray source composition from spectrum and shower depth measurements

• Authors: D. Allard, A. V. Olinto, E. Parizot

Dark Matter Halos with Cores from Hierarchical Structure Formation

• Authors: Louis E. Strigari, Manoj Kaplinghat, James S. Bullock

Causality and the speed of sound

• Authors: George Ellis, Roy Maartens, Malcolm MacCallum

tipa -- 3/26/2007

Mergers of Black Hole -- Neutron Star binaries. I. Methods and First Results

• Authors: Emmanouela Rantsiou (1), Shiho Kobayashi (2), Pablo Laguna (3), Frederic Rasio (1) ((1) Department of Physics and Astronomy, Northwestern University; (2) Astrophysics Research Institute, Liverpool John Moores University; (3) Department of Astronomy and Astrophysics and Department of Physics, Pennsylvania State University)

Unraveling the origin of the Monoceros Stellar Ring

• Authors: Jorge Penarrubia David Martinez-Delgado Hans-Walter Rix

Unparticle Physics

• Authors: Howard Georgi

classic papers of the week -- 13

End to the cosmic ray spectrum?

• Kenneth Greisen (Cornell U., LNS)

Upper limit of the spectrum of cosmic rays

• G.T. Zatsepin, V.A. Kuzmin (Lebedev Inst.)

The Gamma-Ray Spectrum Resulting from Capture of Negative π-Mesons in Hydrogen and Deuterium

• W.K.H. Panofsky, R.Lee Aamodt, James Hadley

Voyages to the Moon

• Curtis, H. D.

tipa -- 3/23/2007

Three-Dimensional Simulations of the Deflagration Phase of the Gravitationally Confined Detonation Model of Type Ia Supernovae

• Authors: G C Jordan IV, R T Fisher, D M Townsley, A C Calder, C Graziani, S Asida, D Q Lamb, J W Truran

Optically-Selected Cluster Catalogs as a Precision Cosmology Tool

• Authors: Eduardo Rozo, Risa H. Wechsler, Benjamin P. Koester, August E. Evrard, Timothy A. McKay

Faint Thermonuclear Supernovae from AM Canum Venaticorum Binaries

• Authors: Lars Bildsten (KITP, UCSB), Ken J. Shen (KITP, UCSB), Nevin N. Weinberg (UCB), Gijs Nelemans (Nijmegen)

tipa -- 3/22/2007

The Troublesome Broadband Evolution of GRB 061126: Does a Grey Burst Imply Grey Dust?

• Authors: D. A. Perley, J. S. Bloom, N. R. Butler, L. K. Pollack, J. Holtzmann, C. H. Blake, D. Kocevski, W. T. Vestrand, W. Li, R. J. Foley, E. Bellm, H.-W. Chen, J. X. Prochaska, D. Starr, A. V. Filippenko, E. E. Falco, A. H. Szentgyorgyi, J. Wren, P. R. Wozniak, R. White, J. Pergande

CMB Spectral Distortions from the Scattering of Temperature Anisotropies

• Authors: Albert Stebbins

Particle acceleration at shock waves: particle spectrum as a function of the equation of state of the shocked plasma

• Authors: G. Morlino, P. Blasi, M. Vietri

tipa -- 3/21/2007

Digging for the Truth: Photon Archeology with GLAST

• Authors: F. W. Stecker (NASA/GSFC)

Significant Gamma Lines from Inert Higgs Dark Matter

• Authors: Michael Gustafsson, Erik Lundstrom, Lars Bergstrom, Joakim Edsjo

Unidentified gamma-ray sources: new source classes with GLAST

• Authors: Diego F. Torres

tipa -- 3/20/2007

Exploring the connection between the stellar wind and the non-thermal emission in LS 5039

• Authors: V. Bosch-Ramon, C. Motch, M. Ribo, R. Lopes de Oliveira, E. Janot-Pacheco, I. Negueruela, J. M. Paredes, A. Martocchia

Gamma-ray burst host galaxies and the link to star-formation

• Authors: J. P. U. Fynbo, J. Hjorth, D. Malesani, J. Sollerman, D. Watson, P Jakobsson, J. Gorosabel, A. O. Jaunsen

tipa -- 3/19/2007

Detection of extended very-high-energy gamma-ray emission towards the young stellar cluster Westerlund 2

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

Early afterglow detection in the Swift observations of GRB 050801

• Authors: Massimiliano De Pasquale, S. R. Oates, M.J.Page, D.N. Burrows, A.J.Blustin, S. Zane, K.O. Mason, P.W.A. Roming, D. Palmer, N. Gehrels, B. Zhang

classic papers of the week -- 12

Selection rules for the beta-disintegration

• G. Gamow, E. Teller (George Washington U.)

Radioactive Element 94 from Deuterons on Uranium

• Seaborg, G. T.; McMillan, E. M.; Kennedy, J. W.; Wahl, A. C. (Department of Chemistry, Radiation Laboratory, Department of Physics, University of California, Berkeley, California)

On the Relative Motion of the Earth and the Luminiferous Ether

• Albert A. Michelson, Edward W. Morley

tipa -- 3/16/2007

The Birthplaces of Gamma-Ray Bursts

• Authors: Patrick A. Young (1,2), Chris L. Fryer (3,4) ((1) Applied Physics, Los Alamos National Lab, (2) Steward Observatory, (3) CCS Division, Los Alamos National Lab, (4) Department of Physics, University of Arizona)

Delayed detonations in full-star models of Type Ia supernova explosions

• Authors: F. K. Roepke (MPA Garching and UC Santa Cruz), J. C. Niemeyer (U Wuerzburg)

A Search for Host Galaxies of 24 Gamma-Ray Bursts

• Authors: J.-E. Ovaldsen, A. O. Jaunsen, J. P. U. Fynbo, J. Hjorth, C. C. Thoene, C. Feron, D. Xu, J. H. Selj, J. Teuber

Non-Universal Spectra of Ultra-High Energy Cosmic Ray Primaries and Secondaries in a Structured Universe

• Authors: Guenter Sigl (APC and IAP, Paris)

Spatially resolved properties of the GRB 060505 host: implications for the nature of the progenitor

• Authors: Christina C. Thoene, Johan P. U. Fynbo, Goeran Oestlin, Bo Milvang-Jensen, Klaas Wiersema, Daniele Malesani, Desiree Della Monica Ferreira, Javier Gorosabel, D. Alexander Kann, Darach Watson, Michal J. Michalowski, Jens Hjorth, Andrew S. Fruchter, Jesper Sollerman

In situ radioglaciological measurements near Taylor Dome, Antarctica and implications for UHE neutrino astronomy

• Authors: D Besson, J. Jenkins, S. Matsuno, J. Nam, M. Smith

Type Ia Supernova Rates Near and Far

• Authors: Nino Panagia, Massimo Della Valle, Filippo Mannucci

tipa -- 3/15/2007

VLBA measurement of the transverse velocity of the magnetar XTE J1810-197

Authors: D. J. Helfand (1), S. Chatterjee (2), W. F. Brisken (3), F. Camilo (1), J. Reynolds (4), M. H. van Kerkwijk (5), J. P. Halpern (1), S. M. Ransom (3) ((1) Columbia U., (2) U. of Sydney, (3) NRAO, (4) ATNF, (5) U. of Toronto)

A New Type of Extremely Metal Poor Star

Authors: Judith G. Cohen, Andrew McWilliam, Norbert Christlieb, Stephen Shectman, Ian Thompson, Jorge Melendez, Lutz Wisotzki, Dieter Reimers

tipa -- 3/14/2007

Swift X-ray Observations of Classical Novae

• Authors: J.-U. Ness, G.J. Schwarz, A. Retter, S. Starrfield, J.H.M.M. Schmitt, N. Gehrels, D. Burrows, J.P. Osborne

Evolution of Collisionally Merged Massive Stars

• Authors: Takeru K. Suzuki (U.Tokyo), Naohito Nakasato (RIKEN), Holger Baumgardt (U.Bonn), Akihiro Ibukiyama (RIKEN), Junichiro Makino (NAOJ), Toshi Ebisuzaki (RIKEN)

The Observed properties of Dark Matter on small spatial scales

• Authors: Gerard Gilmore, Mark I. Wilkinson, Rosemary F.G. Wyse, Jan T. Kleyna, Andreas Koch, N. Wyn Evans

The Triple-Ring Nebula around SN1987A: Fingerprint of a binary merger

• Authors: T. Morris, Ph. Podsiadlowski

Are the Models for Type Ia Supernova Progenitors Consistent with the Properties of Supernova Remnants?

• Authors: Carles Badenes, John P. Hughes, Eduardo Bravo, Norbert Langer

Gamma ray bursts, supernovae and metallicity in the intergalactic medium

• Authors: Shlomo Dado, Arnon Dar, A. De Rujula

CP Violation in the SM, Quantum Subtleties and the Insights of Yogi Berra

• Authors: I.I. Bigi

tipa -- 3/13/2007

Nonthermal Synchrotron Radiation from Gamma Ray Burst External Shocks and the X-ray Flares Observed with Swift

• Authors: Charles D. Dermer

The speed of the `bullet' in the merging galaxy cluster 1E0657-56

• Authors: Volker Springel (MPA), Glennys Farrar (NYU)

Upper limit map of a background of gravitational waves

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

Impact of astrophysical processes on the gamma-ray background from dark matter annihilations

• Authors: Eun-Joo Ahn, Gianfranco Bertone, David Merritt, Pengjie Zhang

A 33 hour period for the Wolf-Rayet/black hole X-ray binary candidate NGC 300 X-1

• Authors: S. Carpano, A.M.T. Pollock, A. Prestwich, P. Crowther, J. Wilms, L. Yungelson, M. Ehle

tipa -- 3/12/2007

GRB 060505: A possible short-duration gamma-ray burst in a star forming region at redshift of 0.09

• Authors: E. O. Ofek, S. B. Cenko, A. Gal-Yam, D. B. Fox, E. Nakar, A. Rau, D. A. Frail, S. R. Kulkarni, P. A. Price, B. P. Schmidt, A. M. Soderberg, B. Peterson, E. Berger, K. Sharon, O. Shemmer, B. E. Penprase, R. A. Chevalier, P. J. Brown, D. N. Burrows, N. Gehrels, F. Harrison, S. T. Holland, V. Mangano, P. J. McCarthy, D.-S. Moon, J. A. Nousek, S. E. Persson, T. Piran, R. Sari

The Cluster-Merger Shock in 1E 0657-56: Faster than the Speeding Bullet?

• Authors: Milos Milosavljevic (1), Jun Koda (1), Daisuke Nagai (2), Ehud Nakar (2), Paul R. Shapiro (1) ((1) University of Texas at Austin, (2) Caltech)

Stellar and wind properties of massive stars in the central parsec of the Galaxy

• Authors: F. Martins (1), R. Genzel (1,2), D.J. Hillier (3), F. Eisenhauer (1), T. Paumard (1,4), S. Gillessen (1), T. Ott (1), S. Trippe (1) ((1) MPE Garching; (2) Berkeley; (3) Pittsburgh, (4) LESIA Paris)

Correlation of Photon and Neutrino Fluxes in Blazars and Gamma Ray Bursts

• Authors: C. Dermer, E. Ramirez-Ruiz, T. Le

classic papers of the week -- 11

The Origin of Chemical Elements

• Alpher, R. A. (Applied Physics Laboratory, The Johns Hopkins University); Bethe, H. (Cornell University); Gamow, G. (The George Washington University)

Very high-energy collisions of hadrons

• Richard P. Feynman (Caltech)

Oscar Klein and gauge theory

• David J. Gross (Princeton U.)

tipa -- 3/9/2007

Discovery of hot supergiant stars near the Galactic center

• Authors: Jon C. Mauerhan, Michael P. Muno, Mark Morris

Suzaku Observations of the Soft X-ray Background

• Authors: David B. Henley, Robin L. Shelton (University of Georgia)

tipa -- 3/8/2007

Spectral modelling of the high energy emission of the magnetar 4U 0142+614

• Authors: Nanda Rea (SRON/U.Sydney), Roberto Turolla (U.Padua), Silvia Zane (MSSL), Andrea Tramacere (U.Rome), Luigi Stella, Gianluca Israel (INAF-OAR), Riccardo Campana (U.Rome)

Gamma-Ray Burst Precursors as the Remnant of the Thermal Radiation Initially Trapped in the Fireball

• Authors: Li-Xin Li (MPA)

Cosmic-ray positron fraction measurement from 1 to 30 GeV with AMS-01

• Authors: AMS-01 Collaboration

Dust Echoes from the Ambient Medium of Gamma-Ray Bursts

• Authors: Kevin Heng, Davide Lazzati, Rosalba Perna

tipa -- 3/7/2007

Observation of the GZK Cutoff by the HiRes Experiment

• Authors: HiRes Collaboration

SN 2006aj Associated with XRF 060218 At Late Phases: Nucleosynthesis-Signature of A Neutron Star-Driven Explosion

• Authors: Keiichi Maeda, Koji Kawabata, Masaomi Tanaka, Ken'ichi Nomoto, Nozomu Tominaga, Takashi Hattori, Takeo Minezaki, Takami Kuroda, Tomoharu Suzuki, Jinsong Deng, Paolo A. Mazzali, Elena Pian