Journal of Cosmology and Astroparticle Physics latest papers http://stacks.iop.org/1475-7516 Journal of Cosmology and Astroparticle Physics (JCAP) has fast established itself as essential reading for the astrophysical community. JCAP covers all aspects of cosmology and particle astrophysics and encompasses theoretical, observational and experimental areas as well as computation and simulation. The journal has already published key results on the implications of the latest CMB data for particle physics and cosmology, inflation, dark matter and dark energy phenomenology, solutions to the solar neutrino problem, and the use of supernova data to test cosmological models. JCAP is the second title from the partnership between IOP and SISSA. en-gb Copyright © IOP Publishing 2011 Thu, 01 Jan 1970 00:00:00 GMT Thu, 01 Jan 1970 00:00:00 GMT http://syndication.iop.org/about/ custserv@iop.org (Customer Services) Journal of Cosmology and Astroparticle Physics http://images.iop.org/website-logos/ejs_logo.png http://stacks.iop.org/ Deriving models for keV sterile neutrino Dark Matter with the Froggatt-Nielsen mechanism http://stacks.iop.org/1475-7516/2011/i=07/a=023?rss=2.0 Author(s): Alexander Merle and Viviana Niro<br>Affiliation(s): Department of Theoretical Physics, School of Engineering Sciences, Royal Institute of Technology (KTH), AlbaNova University Center, Roslagstullsbacken 21, 106 91 Stockholm, Sweden; Dipartimento di Fisica Teorica, Universita di Torino and INFN, Sez. di Torino, via P. Giuria 1, I-10125 Torino, Italy; Max-Planck-Institut fur Kernphysik, Postfach 10 39 80, 69029 Heidelberg, Germany Wed, 13 Jul 2011 23:00:00 GMT Effects of f(R) model on the dynamical instability of expansionfree gravitational collapse http://stacks.iop.org/1475-7516/2011/i=07/a=022?rss=2.0 Author(s): M. Sharif and H. Rizwana Kausar<br>Affiliation(s): Department of Mathematics, University of the Punjab, Quaid-e-Azam Campus, Lahore-54590, Pakistan Tue, 12 Jul 2011 23:00:00 GMT Axions, inflation and the anthropic principle http://stacks.iop.org/1475-7516/2011/i=07/a=021?rss=2.0 Author(s): Katherine J. Mack<br>Affiliation(s): Kavli Institute for Cosmology, Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, U.K. Mon, 11 Jul 2011 23:00:00 GMT Asymptotically safe cosmology http://stacks.iop.org/1475-7516/2011/i=07/a=019?rss=2.0 Author(s): Mark Hindmarsh, Daniel Litim and Christoph Rahmede<br>Affiliation(s): Department of Physics & Astronomy, University of Sussex, Brighton BN1 9QH, U.K. Sun, 10 Jul 2011 23:00:00 GMT Constraints on perturbative f(R) gravity via neutron stars http://stacks.iop.org/1475-7516/2011/i=07/a=020?rss=2.0 Author(s): Savas Arapoglu, Cemsinan Deliduman and K. Yavuz Eksi<br>Affiliation(s): Istanbul Technical University, Faculty of Science and Letters, Physics Engineering Department, Maslak 34469, Istanbul, Turkey; Mimar Sinan Fine Arts University, Department of Physics, Besiktas 34349, Istanbul, Turkey Sun, 10 Jul 2011 23:00:00 GMT Supersonic relative velocity effect on the baryonic acoustic oscillation measurements http://stacks.iop.org/1475-7516/2011/i=07/a=018?rss=2.0 Author(s): Jaiyul Yoo, Neal Dalal and Uros Seljak<br>Affiliation(s): Institute for Theoretical Physics, University of Zurich, CH-8057 Zurich, Switzerland; Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720, U.S.A.; Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St. George Street, Ontario, M5S 3H8, Canada; Physics Department and Astronomy Department, University of California, Berkeley, CA 94720, U.S.A.; Institute for the Early Universe, Ewha Womans University, 120-750 Seoul, South Korea Thu, 07 Jul 2011 23:00:00 GMT Tomography from the next generation of cosmic shear experiments for viable f(R) models http://stacks.iop.org/1475-7516/2011/i=07/a=016?rss=2.0 Author(s): Stefano Camera, Antonaldo Diaferio and Vincenzo F. Cardone<br>Affiliation(s): Dipartimento di Fisica Generale ``A. Avogadro'', Universita degli Studi di Torino, via P. Giuria 1, 10125 Torino, Italy; Dipartimento di Fisica Teorica, Universita degli Studi di Torino, via P. Giuria 1, 10125 Torino, Italy; Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Torino, via P. Giuria 1, 10125 Torino, Italy; Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138, U.S.A.; Istituto Nazionale di Astrofisica (INAF), Osservatorio Astronomico di Roma, via Frascati 33, 00040 Monteporzio Catone, Italy Thu, 07 Jul 2011 23:00:00 GMT Symmetries for Galileons and DBI scalars on curved space http://stacks.iop.org/1475-7516/2011/i=07/a=017?rss=2.0 Author(s): Garrett Goon, Kurt Hinterbichler and Mark Trodden<br>Affiliation(s): Center for Particle Cosmology, Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, U.S.A. Thu, 07 Jul 2011 23:00:00 GMT Notes on f(T) theories http://stacks.iop.org/1475-7516/2011/i=07/a=015?rss=2.0 Author(s): Yi Zhang, Hui Li, Yungui Gong and Zong-Hong Zhu<br>Affiliation(s): Department of Astronomy, Beijing Normal University, Beijing 100875, China; College of Mathematics and Physics, Chongqing University of Posts and Telecommunications, Chongqing 400065, China; Department of Physics, Yantai University, Yantai 264005, China Thu, 07 Jul 2011 23:00:00 GMT Non-power law behavior of the radial profile of phase-space density of halos http://stacks.iop.org/1475-7516/2011/i=07/a=014?rss=2.0 Author(s): A. Del Popolo<br>Affiliation(s): Dipartimento di Fisica e Astronomia, University Of Catania, Viale Andrea Doria 6, 95125 Catania, Italy Wed, 06 Jul 2011 23:00:00 GMT