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)

tipa -- 4/2/2007

A Study of Stellar Photometric Variability Within the Central 4 pc of the Galactic Center with Infrared Image Subtraction

Authors: Molly S. Peeples, K. Z. Stanek, D. L. DePoy (Ohio State University)

Analysis of Collective Neutrino Flavor Transformation in Supernovae

Authors: Huaiyu Duan (UCSD), George M. Fuller (UCSD), J. Carlson (LANL), Yong-Zhong Qian (UMN)

On the origin of the cosmic microwave background anisotropies

Authors: Ria Follop, Anais Rassat, Asantha Cooray, Filipe B. Abdalla

classic papers of the week -- 14

Broken Symmetries and the Masses of Gauge Bosons

• Peter W. Higgs (Edinburgh U.)

High-Energy Photons from the Compton-Synchrotron Process in the Crab Nebula

• Robert J.Gould (University of California, San Diego, California)

Nonadiabatic Level Crossing in Resonant Neutrino Oscillations

• Stephen J. Parke (Fermilab)

tipa -- 3/30/2007

X-Ray, UV, and Optical Observations of Supernova 2006bp with Swift: Detection of Early X-Ray Emission

• Authors: S. Immler, P. J. Brown, P. Milne, L. Dessart, P. A. Mazzali, W. Landsman, N. Gehrels, R. Petre, D. N. Burrows, J. A. Nousek, R. A. Chevalier, C. L. Williams, M. Koss, C. J. Stockdale, M. T. Kelley, K. W. Weiler, S. T. Holland, E. Pian, P. W. A. Roming, D. Pooley, K. Nomoto, J. Greiner, S. Campana, A. M. Soderberg

Effects of Cosmic Infrared Background on High Energy Delayed Gamma-Rays from Gamma-Ray Bursts

• Authors: Kohta Murase, Katsuaki Asano, Shigehiro Nagataki

Gamma-Rays from Dark Matter Mini-Spikes in M31

• Authors: Mattia Fornasa, Marco Taoso, Gianfranco Bertone

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