tipa -- 5/20/2010

Multi-Instrument X-ray Observations of Thermonuclear Bursts with Short Recurrence Times

• Authors: L. Keek, D. K. Galloway, J. J. M. in 't Zand, A. Heger

Star Forming Dense Cloud Cores in the TeV γ-ray SNR RX J1713.7-3946

• Authors: H. Sano, J. Sato, H. Yamamoto, T. Hayakawa, K. Torii, N. Moribe, A. Kawamura, T. Okuda, N. Mizuno, T. Onishi, H. Maezawa, T. Inoue, S. Inutsuka, T. Tanaka, A. Mizuno, H. Ogawa, J. Stutzki, F. Bertoldi, S. Anderl, L. Bronfman, B. C. Koo, M. G. Burton, A. O. Benz, Y. Fukui

Discovery of Eclipses from the Accreting Millisecond X-ray Pulsar SWIFT J1749.4-2807

• Authors: C. B. Markwardt, T. E. Strohmayer

Timing of the first eclipsing accretion-powered millisecond X-ray pulsar

• Authors: D. Altamirano, Y. Cavecchi, A. Patruno, A. Watts, M. Linares, N. Degenaar, M. Kalamkar, M. van der Klis, N. Rea, P. Casella, M. Armas Padilla, R. Kaur, Y.J. Yang, P. Soleri, R. Wijnands

Testing gravitational parity violation with coincident gravitational waves and short gamma-ray bursts

• Authors: Nicolas Yunes, Richard O'Shaughnessy, Benjamin J. Owen, Stephon Alexander

tipa -- 5/19/2010

Discovery of a new Soft Gamma Repeater, SGR J1833-0832

• Authors: E. Gogus, G. Cusumano, A.J. Levan, C. Kouveliotou, T. Sakamoto, S.D. Barthelmy, S. Campana, Y. Kaneko, B.W. Stappers, A. de Ugarte-Postigo, T. Strohmayer, D.M. Palmer, J. Gelbord, D.N. Burrows, A.J. van der Horst, T. Munoz-Darias, N. Gehrels, J.W.T. Hessels, A.P. Kamble, S. Wachter, K. Wiersema, R.A.M.J. Wijers, P.M. Woods

The Herschel Virgo Cluster Survey: VI. The far-infrared view of M87

• Authors: M. Baes, M. Clemens, E. M. Xilouris, J. Fritz, W. D. Cotton, J. I. Davies, G. J. Bendo, S. Bianchi, L. Cortese, I. De Looze, M. Pohlen, J. Verstappen, H. Boehringer, D. J. Bomans, A. Boselli, E. Corbelli, A. Dariush, S. di Serego Alighieri, D. Fadda, D. A. Garcia-Appadoo, G. Gavazzi, C. Giovanardi, M. Grossi, T. M. Hughes, L. K. Hunt, A. P. Jones, S. Madden, D. Pierini, S. Sabatini, M. W. L. Smith, C. Vlahakis, S. Zibetti

Reionization of the Local Group of Galaxies

• Authors: Ilian T. Iliev (1,2), Ben Moore (2), Stefan Gottloeber (3), Gustavo Yepes (4), Yehuda Hoffman (5), Garrelt Mellema (6) ((1) University of Sussex, (2) University of Zurich, (3) Astrophysical Institute Potsdam, (4) Universidad Autonoma de Madrid, (5) Hebrew University, (6) Stockholm University)

Limitations on the Photo-disintegration Process as a Source of VHE Photons

• Authors: Felix Aharonian Andrew M. Taylor

Limiting Accretion onto Massive Stars by Fragmentation-Induced Starvation

• Authors: Thomas Peters, Ralf S. Klessen, Mordecai-Mark Mac Low, Robi Banerjee

Measurement of Bose-Einstein correlations with first CMS data

• Authors: CMS Collaboration

tipa -- 5/18/2010

The Mass Profile of the Galaxy to 80 kpc

• Authors: Oleg Y. Gnedin, Warren R. Brown, Margaret J. Geller, Scott J. Kenyon

GZK Neutrinos after the Fermi-LAT Diffuse Photon Flux

• Authors: M. Ahlers, L.A. Anchordoqui, M.C. Gonzalez-Garcia, F. Halzen, S. Sarkar

A Herschel PACS and SPIRE study of the dust content of the Cassiopeia A supernova remnant

• Authors: M. J. Barlow, O. Krause, B. M. Swinyard, B. Sibthorpe, M.-A. Besel, R. Wesson, R. J. Ivison, L. Dunne, W. K. Gear, H. L. Gomez, P. C. Hargrave, Th. Henning, S. J. Leeks, T. L. Lim, G. Olofsson, E. T. Polehampton

Measurement of the Anisotropy of Cosmic Ray Arrival Directions with IceCube

• Authors: The IceCube Collaboration: R. Abbasi, et al

tipa -- 5/17/2010

Herschel ATLAS: The cosmic star formation history of quasar host galaxies

• Authors: S. Serjeant, F. Bertoldi, A.W. Blain, D.L. Clements, A. Cooray, L. Danese, J. Dunlop, L. Dunne, S. Eales, J. Falder, E. Hatziminaoglou, D.H. Hughes, E. Ibar, M.J. Jarvis, A. Lawrence, M.G. Lee, M. Michałowski, M. Negrello, A. Omont, M. Page, C. Pearson, P.P. van der Werf, G. White, A. Amblard, R. Auld, M. Baes, D.G. Bonfield, D. Burgarella, S. Buttiglione, A. Cava, A. Dariush, G. de Zotti, S. Dye, D. Frayer, J. Fritz, J. Gonzalez-Nuevo, D. Herranz, R.J. Ivison, G. Lagache, L. Leeuw, M. Lopez-Caniego, S. Maddox, E. Pascale, M. Pohlen, E. Rigby, G. Rodighiero, S. Samui, B. Sibthorpe, D.J.B. Smith, P. Temi, M. Thompson, I. Valtchanov, A. Verma

Relative velocity of dark matter and baryonic fluids and the formation of the first structures

• Authors: Dmitriy Tseliakhovich, Christopher Hirata

The intergalactic medium over the last 10 billion years I: Lyman alpha absorption and physical conditions

• Authors: Romeel Davé, Benjamin D. Oppenheimer, Neal Katz, Juna A. Kollmeier, David H. Weinberg

Crystallization of Carbon Oxygen Mixtures in White Dwarf Stars

• Authors: C. J. Horowitz, A. S. Schneider, D. K. Berry

The youngest massive protostars in the Large Magellanic Cloud

• Authors: M. Sewilo, R. Indebetouw, L. R. Carlson, B. Whitney, C.-H. R. Chen, M. Meixner, T. Robitaille, J. Th. van Loon, J. M. Oliveira, E. Churchwell, J. D. Simon, S. Hony, P. Panuzzo, M. Sauvage, J. Roman-Duval, K. Gordon, C. Engelbracht, K. Misselt, K. Okumura, T. Beck, J. Hora, P. M. Woods

Reply to the Comments on the XENON100 First Dark Matter Results

• Authors: The XENON100 Collaboration

Finite size corrections to the radiation reaction force in classical electrodynamics

• Authors: Chad R. Galley, Adam K. Leibovich, Ira Z. Rothstein

classic papers of the week -- 149

Influence of Bose-Einstein statistics on the anti-proton proton annihilation process

• Gerson Goldhaber, Sulamith Goldhaber, Won-Yong Lee, Abraham Pais, (Lawrence Radiation Laboratory and Department of Physics, University of California, Berkeley)

An Example of a New Type of Cosmological Solutions of Einstein's Field Equations of Gravitation

• Gödel, Kurt (Institute for Advanced Study, Princeton, New Jersey)

De nova et nullius aevi memoria prius visa stella, iam pridem anno a nato Christo 1572, mense Novembri primum conspecta, contemplatio mathematica

• Brahe, Tycho

tipa -- 5/14/2010

Using Faraday Rotation to Probe MHD Instabilities in Intracluster Media

• Authors: Tamara Bogdanovic, Christopher Reynolds (University of Maryland), Richard Massey (Royal Observatory Edinburgh)

A white dwarf cooling age of 8 Gyr for NGC 6791 from physical separation processes

• Authors: Enrique García-Berro, Santiago Torres, Leandro G. Althaus, Isabel Renedo, Pablo Lorén-Aguilar, Alejandro H. Córsico, René D. Rohrmann, Maurizio Salaris, Jordi Isern

Mixing of CNO-cycled matter in massive stars

• Authors: N. Przybilla (1), M. Firnstein (1), M.F. Nieva (2), G. Meynet (3), A. Maeder (3) ((1) Remeis Observatory Bamberg & ECAP, (2) MPA Garching, (3) Geneva Observatory)

tipa -- 5/13/2010

Radio and X-ray Observations of the Type Ic SN 2007gr Reveal an Ordinary, Non-relativistic Explosion

• Authors: Alicia M. Soderberg, Andreas Brunthaler, Ehud Nakar, Roger A. Chevalier

The Megamaser Cosmology Project. II. The Angular-Diameter Distance to UGC 3789

• Authors: J. A. Braatz, M. J. Reid, E. M. L. Humphreys, C. Henkel, J. J. Condon, K. Y. Lo

Wide radio beams from gamma-ray pulsars

• Authors: V. Ravi, R. N. Manchester, G. Hobbs

Discovery of the Eclipsing Detached Double White Dwarf Binary NLTT 11748

• Authors: Justin D. R. Steinfadt, David L. Kaplan, Avi Shporer, Lars Bildsten, Steve B. Howell

Mapping the interstellar medium in galaxies with Herschel/SPIRE

• Authors: S.A. Eales, M.W.L. Smith, C.D. Wilson, G.J. Bendo, L. Cortese, M. Pohlen, A. Boselli, H.L. Gomez, R. Auld, M. Baes, M.J. Barlow, J.J. Bock, M. Bradford, V. Buat, N. Castro-Rodriguez, P. Chanial, S. Charlot, L. Ciesla, D.L. Clements, A. Cooray, D. Cormier, J.I. Davies, E. Dwek, D. Elbaz, M. Galametz, F. Galliano, W.K. Gear, J. Glenn, M. Griffin, S. Hony, K.G. Isaak, L.R. Levenson, N. Lu, S. Madden, B. O'Halloran, K. Okumura, S. Oliver, M.J. Page, P. Panuzzo, A. Papageorgiou, T.J. Parkin, I. Perez-Fournon, N. Rangwala, E.E. Rigby, H. Roussel, A. Rykala, N. Sacchi, M. Sauvage, B. Schulz, M.R.P. Schirm, L. Spinoglio, S. Srinivasan, J.A. Stevens, M. Symeonidis, M. Trichas, M. Vaccari, L. Vigroux, H. Wozniak, G.S. Wright, W.W. Zeilinger

Comparison of Different Methods for Nonlinear Diffusive Shock Acceleration

• Authors: D. Caprioli, H. Kang, A. Vladimirov, T.W. Jones

Fermi Observations of GRB 090510: A Short Hard Gamma-Ray Burst with an Additional, Hard Power-Law Component from 10 keV to GeV Energies

• Authors: The Fermi LAT, GBM Collaborations

Experimental Demonstration of Time-Delay Interferometry for the Laser Interferometer Space Antenna

• Authors: Glenn de Vine, Brent Ware, Kirk McKenzie, Robert E. Spero, William M. Klipstein, Daniel A. Shaddock

tipa -- 5/12/2010

The Sensitivity of the Parkes Pulsar Timing Array to Individual Sources of Gravitational Waves

• Authors: D. R. B. Yardley, G. B. Hobbs, F. A. Jenet, J. P. W. Verbiest, Z. L. Wen, R. N. Manchester, W. A. Coles, W. van Straten, M. Bailes, N. D. R. Bhat, S. Burke-Spolaor, D. J. Champion, A. W. Hotan, J. M. Sarkissian

The Evolution of the UV Luminosity Function from z ~ 0.75 to z ~ 2.5 using HST ERS WFC3/UVIS Observations

• Authors: P. A. Oesch (1), R. J. Bouwens (2,3), C. M. Carollo (1), G. D. Illingworth (2), D. Magee (2), M. Trenti (4), M. Stiavelli (5), M. Franx (3), I. Labbe (6), ((1) ETH Zurich, (2) Santa Cruz, (3) Leiden, (4) Colorado, (5) STScI, (6) Carnegie)

GRB 090417B and its Host Galaxy: A Step Towards an Understanding of Optically-Dark Gamma-Ray Bursts

• Authors: Stephen T. Holland, Boris Sbarufatti, Rongfeng Shen, Patricia Schady, Jay R. Cummings, Emmanuel Fonseca, Johan P. U. Fynbo, Pall Jakobsson, Elisabet Leitet, Staffan Linne, Peter W. A. Roming, Martin Still, Bing Zhang

Modeling the spectral evolution of PWNe inside SNRs

• Authors: N. Bucciantini (NORDITA, Albanova), J. Arons (U.C. Berkeley), E. Amato (INAF, Arcetri)

The Herschel Space Observatory view of dust in M81

• Authors: G. J. Bendo, C. D. Wilson, M. Pohlen, M. Sauvage, R. Auld, M. Baes, M. J. Barlow, J. J. Bock, A. Boselli, M. Bradford, V. Buat, N. Castro-Rodriguez, P. Chanial, S. Charlot, L. Ciesla, D. L. Clements, A. Cooray, D. Cormier, L. Cortese, J. I. Davies, E. Dwek, S. A. Eales, D. Elbaz, M. Galametz, F. Galliano, W. K. Gear, J. Glenn, H. L. Gomez, M. Griffin, S. Hony, K. G. Isaak, L. R. Levenson, N. Lu, S. Madden, B. O'Halloran, K. Okumura, S. Oliver, M. J. Page, P. Panuzzo, A. Papageorgiou, T. J. Parkin, I. Perez-Fournon, N. Rangwala, E. E. Rigby, H. Roussel, A. Rykala, N. Sacchi, B. Schulz, M. R. P. Schirm, M. W. L. Smith, L. Spinoglio, J. A. Stevens, S. Sundar, M. Symeonidis, M. Trichas, M. Vaccari, L. Vigroux, H. Wozniak, G. S. Wright, W. W. Zeilinger

Discovery of gamma-ray halos around active galactic nuclei and the first measurement of intergalactic magnetic fields

• Authors: Shin'ichiro Ando (Caltech), Alexander Kusenko (UCLA/Tokyo)

Measure of precursor electron density profiles of laser launched radiative shocks

• Authors: Michel Busquet, Frédéric Thais, Matthias González, Edouard Audit

tipa -- 5/11/2010

SPIRE imaging of M82: cool dust in the wind and tidal streams

• Authors: H. Roussel, C. D. Wilson, L. Vigroux, K. G. Isaak, M. Sauvage, S. C. Madden, R. Auld, M. Baes, M. J. Barlow, G. J. Bendo, J. J. Bock, A. Boselli, M. Bradford, V. Buat, N. Castro-Rodriguez, P. Chanial, S. Charlot, L. Ciesla, D. L. Clements, A. Cooray, D. Cormier, L. Cortese, J. I. Davies, E. Dwek, S. A. Eales, D. Elbaz, M. Galametz, F. Galliano, W. K. Gear, J. Glenn, H. L. Gomez, M. Griffin, S. Hony, L. R. Levenson, N. Lu, B. O'Halloran, K. Okumura, S. Oliver, M. J. Page, P. Panuzzo, A. Papageorgiou, T. J. Parkin, I. Perez-Fournon, M. Pohlen, N. Rangwala, E. E. Rigby, A. Rykala, N. Sacchi, B. Schulz, M. R. P. Schirm, M. W. L. Smith, L. Spinoglio, J. A. Stevens, S. Srinivasan, M. Symeonidis, M. Trichas, M. Vaccari, H. Wozniak, G. S. Wright, W. W. Zeilinger

PEP: first Herschel probe of dusty galaxy evolution up to z~3

• Authors: C. Gruppioni, F. Pozzi, P. Andreani, G. Rodighiero, A. Cimatti, B. Altieri, H. Aussel, S. Berta, A. Bongiovanni, D. Brisbin, A. Cava, J. Cepa, E. Daddi, H. Dominguez-Sanchez, D. Elbaz, N. Forster Schreiber, R. Genzel, E. Le Floc'h, D. Lutz, G. Magdis, M. Magliocchetti, B. Magnelli, R. Maiolino, R. Nordon, A.M. Per'ez-García, A. Poglitsch, P. Popesso, L. Riguccini, A. Saintonge, M. Sanchez-Portal, P. Santini, L. Shao, E. Sturm, L. Tacconi, I. Valtchanov

PTF10fqs: A Luminous Red Nova in the Spiral Galaxy Messier 99

• Authors: Mansi M. Kasliwal, S. R. Kulkarni, Robert M. Quimby, Eran O. Ofek, Peter Nugent, Janet Jacobsen, Avishay Gal-Yam, Yoav Green, Iair Arcavi, Ofer Yaron, Jacob L. Howell, Derek B. Fox, S. Bradley Cenko, Io Kleiser, Joshua S. Bloom, Adam Miller, Dovi Poznanski, Weidong Li, Alexei V. Filippenko, Dan Starr, Nicholas M. Law, George Helou, Dale A. Frail, James D. Neill, Karl Forster, D. Christopher Martin, Shriharsh P. Tendulkar, Neil Gehrels, Jamie Kennea, Mark Sullivan, Richard Dekany, Gustavo Rahmer, David Hale, Roger Smith, Jeff Zolkower, Viswa Velur, Richard Walters, John Henning, Kahnh Bui, Dan McKenna, Cullen Blake

Contribution from Star-Forming Galaxies to the Cosmic Gamma-Ray Background Radiation

• Authors: R. Makiya, T. Totani, M. A. R. Kobayashi

Probing Nearby CR Accelerators and ISM Turbulence with Milagro Hot Spots

• Authors: M.A. Malkov, P.H. Diamond, L.'O.C. Drury, R.Z. Sagdeev

tipa -- 5/10/2010

The far-infrared/radio correlation as probed by Herschel

• Authors: R. J. Ivison (UK ATC and IfA, Edinburgh), B. Magnelli, E. Ibar, P. Andreani, D. Elbaz, B. Altieri, A. Amblard, V. Arumugam, R. Auld, H. Aussel, T. Babbedge, S. Berta, A. Blain, J. Bock, A. Bongiovanni, A. Boselli, V. Buat, D. Burgarella, N. Castro, A. Cava, J. Cepa, P. Chanial, A. Cimatti, M. Cirasuolo, D. L. Clements, A. Conley, L. Conversi, A. Cooray, E. Daddi, H. Dominguez, C. D. Dowell, E. Dwek, S. Eales, D. Farrah, , M. Fox, A. Franceschini, W. Gear, R. Genzel, J. Glenn, M. Griffin, C. Gruppioni, M. Halpern, E. Hatziminaoglou, K. Isaak, G. Lagache, L. Levenson, N. Lu, D. Lutz, S. Madden, B. Maffei, G. Magdis, G. Mainetti, R. Maiolino, L. Marchetti, G. E. Morrison, A. M. J. Mortier, H. T. Nguyen, R. Nordon, B. O'Halloran, S. J. Oliver, A. Omont, F. N. Owen, M. J. Page, P. Panuzzo, A. Papageorgiou, C. P. Pearson, , A., A. Poglitsch, M. Pohlen, P. Popesso, F. Pozzi, J. I. Rawlings, G. Raymond, D. Rigopoulou, L. Riguccini, D. Rizzo, G. Rodighiero, I. G. Roseboom, M. Rowan-Robinson, A. Saintonge, M. Sanchez Portal, P. Santini, B. Schulz, Douglas Scott, N. Seymour, L. Shao, D. L. Shupe, A. J. Smith, J. A. Stevens, E. Sturm, M. Symeonidis, L. Tacconi, M. Trichas, K. E. Tugwell, M. Vaccari, I. Valtchanov, J. Vieira, L. Vigroux, L. Wang, R. Ward, G. Wright, C. K. Xu, M. Zemcov

Dissecting the cosmic infra-red background with Herschel/PEP

• Authors: S. Berta, B. Magnelli, D. Lutz, B. Altieri, H. Aussel, P. Andreani, O. Bauer, A. Bongiovanni, A. Cava, J. Cepa, A. Cimatti, E. Daddi, H. Dominguez, D. Elbaz, H. Feuchtgruber, N.M. Foerster Schreiber, R. Genzel, C. Gruppioni, R. Katterloher, G. Magdis, R. Maiolino, R. Nordon, A.M. Perez Garcia, A. Poglitsch, P. Popesso, F. Pozzi, L. Riguccini, G. Rodighiero, A. Saintonge, P. Santini, M. Sanchez-Portal, L. Shao, E. Sturm, L.J. Tacconi, I. Valtchanov, M. Wetzstein, E. Wieprecht

The Environments of Short-Duration Gamma-Ray Bursts and Implications for their Progenitors

• Authors: E. Berger (Harvard)

Ultra deep AKARI observations of Abell 2218: resolving the 15 um extragalactic background light

• Authors: R. Hopwood, S. Serjeant, M. Negrello, C. Pearson, E. Egami, M. Im, J.-P. Kneib, J. Ko, H. M. Lee, M. G. Lee, H. Matsuhara, T. Nakagawa, I. Smail, T. Takagi

Nickel-Rich Outflows Produced by the Accretion-Induced Collapse of White Dwarfs: Lightcurves and Spectra

• Authors: S. Darbha, B.D. Metzger, E. Quataert, D. Kasen, P. Nugent, R. Thomas

Bursting SN 1996cr's Bubble: Hydrodynamic and X-ray Modeling of its Circumstellar Medium

• Authors: Vikram V. Dwarkadas (U Chicago), Daniel Dewey (MIT), Franz Bauer (PUC, Chile, SSI)

A Survey of the Polarized Emission from the Galactic Plane at 1420 MHz with Arcminute Angular Resolution

• Authors: T.L. Landecker, W. Reich, R.I. Reid, P. Reich, M. Wolleben, R. Kothes, B. Uyaniker, A.D. Gray, D. Del Rizzo, E. Furst, A.R. Taylor, R. Wielebinski

Probing New Physics Models of Neutrinoless Double Beta Decay with SuperNEMO

• Authors: R. Arnold, C. Augier, J. Baker, A. S. Barabash, A. Basharina-Freshville, M. Bongrand, V. Brudanin, A. J. Caffrey, S. Cebrián, A. Chapon, E. Chauveau, Th. Dafni, F. F. Deppisch, J. Diaz, D. Durand, V. Egorov, J. J. Evans, R. Flack, K-I. Fushima, I. García Irastorza, X. Garrido, H. Gómez, B. Guillon, A. Holin, K. Holy, J. J. Horkey, Ph. Hubert, C. Hugon, F. J. Iguaz, N. Ishihara, C. M. Jackson, S. Jullian, M. Kauer, O. Kochetov, S. I. Konovalov, V. Kovalenko, T. Lamhamdi, K. Lang, G. Lutter, G. Luzón, F. Mamedov, Ch. Marquet, F. Mauger, F. Monrabal, A. Nachab, I. Nasteva, I. Nemchenok, C. H. Nguyen, M. Nomachi, F. Nova, H. Ohsumi, R. B. Pahlka, F. Perrot, F. Piquemal, P. P. Povinec, B. Richards, J. S. Ricol, C. L. Riddle, A. Rodríguez, R. Saakyan, X. Sarazin, J. K. Sedgbeer, L. Serra, Yu. Shitov, L. Simard, F. Šimkovic, S. Söldner-Rembold, I. Štekl, C. S. Sutton, Y. Tamagawa, J. Thomas, V. Timkin, V. Tretyak, Vl. I. Tretyak, V. I. Umatov, I. A. Vanyushin, R. Vasiliev, V. Vasiliev, V. Vorobel, D. Waters, N. Yahlali, A. Žukauskas

classic papers of the week -- 148

Black hole explosions?

• Hawking, S. W. (Department of Applied Mathematics and Theoretical Physics and Institute of Astronomy University of Cambridge)

Cloud Chamber Observations of Cosmic Rays at 4300 Meters Elevation and Near Sea-Level

• Anderson, Carl D.; Neddermeyer, Seth H. (Norman Bridge Laboratory of Physics, California Institute of Technology)

Observations for Determining the Length of a Degree of Latitude in the Provinces of Maryland and Pennsylvania, in North America

• Charles Mason and Jeremiah Dixon

tipa -- 5/7/2010

Fermi-LAT Constraints on the Gamma-ray Opacity of the Universe

• Authors: The Fermi LAT, the GBM Collaboration: A. A. Abdo, et al.

Anisotropies in the Diffuse Gamma-Ray Background from Dark Matter with Fermi LAT: a closer look

• Authors: A. Cuoco, A. Sellerholm, J. Conrad, S. Hannestad

Grand Unification in Neutron Stars

• Authors: Victoria M. Kaspi (McGill University)

Upper Limits on a Possible Gluon Mass

• Authors: Shmuel Nussinov, Robert Shrock