M
M. J. Pivovaroff
Researcher at Lawrence Livermore National Laboratory
Publications - 67
Citations - 2075
M. J. Pivovaroff is an academic researcher from Lawrence Livermore National Laboratory. The author has contributed to research in topics: Axion & CERN Axion Solar Telescope. The author has an hindex of 20, co-authored 67 publications receiving 1843 citations. Previous affiliations of M. J. Pivovaroff include SLAC National Accelerator Laboratory.
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Journal ArticleDOI
Asymmetries in core-collapse supernovae from maps of radioactive 44Ti in Cassiopeia A.
Brian W. Grefenstette,Fiona A. Harrison,Steven E. Boggs,Stephen P. Reynolds,Chris L. Fryer,K. K. Madsen,Daniel R. Wik,Andreas Zoglauer,C. I. Ellinger,D. M. Alexander,Hongjun An,Didier Barret,Didier Barret,Finn Erland Christensen,Walter Craig,Walter Craig,K. Forster,Paolo Giommi,C. J. Hailey,Allan Hornstrup,V. M. Kaspi,Takao Kitaguchi,Jason E. Koglin,Peter H. Mao,Hiromasa Miyasaka,K. Mori,M. Perri,M. Perri,M. J. Pivovaroff,Simonetta Puccetti,Simonetta Puccetti,Vikram Rana,D. Stern,Niels Jørgen Stenfeldt Westergaard,W. W. Zhang +34 more
TL;DR: The observed spatial distribution rules out symmetric explosions even with a high level of convective mixing, as well as highly asymmetric bipolar explosions resulting from a fast-rotating progenitor, providing strong evidence for the development of low-mode convective instabilities in core-collapse supernovae.
Posted Content
Dark Sectors and New, Light, Weakly-Coupled Particles
R. Essig,J. A. Jaros,W. C. Wester,P. Hansson Adrian,S. Andreas,T. Averett,Oliver Keith Baker,Brian Batell,M. Battaglieri,James Beacham,T. Beranek,James D. Bjorken,F. Bossi,James Boyce,G. D. Cates,Andrea Celentano,A. S. Chou,R. Cowan,F. Curciarello,Hooman Davoudiasl,Patrick deNiverville,R. De Vita,A. G. Denig,Ranjan Dharmapalan,B. Dongwi,Babette Döbrich,B. Echenard,Domenec Espriu,S. Fegan,P. H. Fisher,G. B. Franklin,A. Gasparian,Yuri Gershtein,Matthew J. Graham,Peter W. Graham,Andy Haas,A. Hatzikoutelis,M. Holtrop,I. G. Irastorza,Eder Izaguirre,Joerg Jaeckel,Yonatan Kahn,N. Kalantarians,Michael Kohl,Gordan Krnjaic,V. P. Kubarovsky,H-S. Lee,A. Lindner,Andrei Lobanov,William J. Marciano,David J. E. Marsh,T. Maruyama,David McKeen,Harald Merkel,K.C. Moffeit,P. Monaghan,Guido Mueller,T. K. Nelson,George R. Neil,M. Oriunno,Z. Pavlovic,S. K. Phillips,M. J. Pivovaroff,R. Poltis,Maxim Pospelov,Surjeet Rajendran,Javier Redondo,Andreas Ringwald,Adam Ritz,J. Ruz,Kiadtisak Saenboonruang,Philip Schuster,Michelle D. Shinn,Tracy R. Slatyer,Jason H. Steffen,S. Stepanyan,David B. Tanner,Jesse Thaler,Michael E. Tobar,Natalia Toro,A. Upadye,R. G. Van de Water,Branislav Vlahovic,Julia Vogel,D. Walker,Amanda Weltman,Bogdan Wojtsekhowski,S. Zhang,Konstantin Zioutas +88 more
TL;DR: A review of the physics motivation for dark sectors and the exciting opportunities for experimental exploration is provided in this article, where axions, which solve the strong CP problem and are an excellent dark matter candidate, and their generalization to axion-like particles.
Journal ArticleDOI
Search for sub-eV mass solar axions by the CERN Axion Solar Telescope with 3He buffer gas.
M. Arik,S. Aune,K. Barth,A. Belov,S. Borghi,Heinrich Bräuninger,Giovanni Cantatore,J. M. Carmona,Serkant Ali Cetin,J. I. Collar,T. Dafni,M. Davenport,C. Eleftheriadis,N. Elias,C. Ezer,Georgios Fanourakis,E. Ferrer-Ribas,Peter Friedrich,Javier Galan,J. A. Garcia,A. Gardikiotis,Evangelos Gazis,T. Geralis,I. Giomataris,Sergei Gninenko,Hector Gomez,E. Gruber,T. Guthörl,Raimo Hartmann,F. Haug,M. D. Hasinoff,Dieter Hoffmann,F.J. Iguaz,I. G. Irastorza,Joachim Jacoby,Krešimir Jakovčić,Marin Karuza,K. Königsmann,Rainer Kotthaus,Milica Krčmar,Markus Kuster,Biljana Lakić,J. M. Laurent,A. Liolios,Ante Ljubičić,V. Lozza,G. Lutz,G. Luzón,J. Morales,T. O. Niinikoski,A. Nordt,T. Papaevangelou,M. J. Pivovaroff,Georg G. Raffelt,Timur Rashba,H. Riege,Adriane De Assis Lawisch Rodriguez,M. Rosu,J. Ruz,I. Savvidis,P. S. Silva,Sami K. Solanki,L. Stewart,A. Tomás,M. Tsagri,K. van Bibber,Theodoros Vafeiadis,José Villar,Julia Vogel,S. C. Yildiz,Konstantin Zioutas +70 more
TL;DR: From the absence of excess x rays when the magnet was pointing to the Sun, the typical upper limit on the axion-photon coupling of g(aγ)≲2.3×10(-10) GeV(-1) at 95% C.L. is set.
Journal ArticleDOI
Search for Solar Axions by the CERN Axion Solar Telescope with 3He Buffer Gas: Closing the Hot Dark Matter Gap
M. Arik,S. Aune,K. Barth,A. Belov,S. Borghi,Heinrich Bräuninger,G. Cantatore,J. M. Carmona,Serkant Ali Cetin,J. I. Collar,E. Da Riva,T. Dafni,M. Davenport,C. Eleftheriadis,N. Elias,Georgios Fanourakis,E. Ferrer-Ribas,Peter Friedrich,Javier Galan,J. A. Garcia,A. Gardikiotis,J. G. Garza,Evangelos Gazis,T. Geralis,E. Georgiopoulou,Ioannis Giomataris,S. N. Gninenko,Hector Gomez,M. Gomez Marzoa,E. Gruber,T. Guthörl,Raimo Hartmann,Steffen Hauf,F. Haug,M. D. Hasinoff,Dieter H. H. Hoffmann,F.J. Iguaz,I. G. Irastorza,Joachim Jacoby,Krešimir Jakovčić,Marin Karuza,K. Königsmann,Rainer Kotthaus,Milica Krčmar,Markus Kuster,Biljana Lakić,P. M. Lang,J. M. Laurent,A. Liolios,Ante Ljubičić,G. Luzón,S. Neff,T. O. Niinikoski,A. Nordt,T. Papaevangelou,M. J. Pivovaroff,Georg G. Raffelt,H. Riege,A Rodríguez,M. Rosu,J. Ruz,I. Savvidis,I. Shilon,P. S. Silva,Sami K. Solanki,L. Stewart,A. Tomás,M. Tsagri,K. van Bibber,T. Vafeiadis,José Villar,Julia Vogel,S. C. Yildiz,Konstantin Zioutas +73 more
TL;DR: From the absence of excess x rays when the magnet was pointing to the Sun, the CERN Axion Solar Telescope set a typical upper limit on the axion-photon coupling of gaγ, with the exact value depending on the pressure setting.
Journal ArticleDOI
CAST constraints on the axion-electron coupling
K. Barth,A. Belov,B. Beltrán,Heinrich Bräuninger,J. M. Carmona,J. I. Collar,T. Dafni,T. Dafni,M. Davenport,L. Di Lella,C. Eleftheriadis,Jakob Englhauser,Georgios Fanourakis,E. Ferrer-Ribas,H. Fischer,J. Franz,Peter Friedrich,Javier Galan,J. A. Garcia,T. Geralis,I. Giomataris,S. N. Gninenko,Hector Gomez,M. D. Hasinoff,F. H. Heinsius,Dieter H. H. Hoffmann,I. G. Irastorza,I. G. Irastorza,Joachim Jacoby,Krešimir Jakovčić,D. Kang,K. Königsmann,Rainer Kotthaus,Konstantinos Kousouris,Milica Krčmar,Markus Kuster,Markus Kuster,Biljana Lakić,A. Liolios,Ante Ljubičić,G. Lutz,G. Luzón,David Miller,T. Papaevangelou,M. J. Pivovaroff,Georg G. Raffelt,Javier Redondo,Javier Redondo,H. Riege,A Rodríguez,J. Ruz,J. Ruz,J. Ruz,I. Savvidis,Yannis K. Semertzidis,L. Stewart,K. van Bibber,Joaquin Vieira,J.A. Villar,Julia Vogel,Julia Vogel,Louis Walckiers,Konstantin Zioutas,Konstantin Zioutas,Konstantin Zioutas +64 more
TL;DR: In this paper, the authors derived limits on the axion-electron Yukawa coupling gae and axionphoton interaction strength ga? using the CAST phase-I data (vacuum phase).