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We show that isotropic component of circular polarization of stochastic gravitational wave background can be explored by breaking two dimensional configuration of multiple laser interferometers for correlation analysis. By appropriately…

Astrophysics · Physics 2008-11-26 Naoki Seto

Two-particle angular correlation is one of the most powerful tools to study the mechanism of particle production in proton--proton (pp) collision systems by relating the difference between the azimuthal angle ($\Delta\varphi$) and the…

Nuclear Experiment · Physics 2024-02-14 Daniela Ruggiano

We present results from deep (70 ks) Chandra ACIS observations and Hubble Space Telescope ACS F475W observations of two highly optically polarized quasars belonging to the MOJAVE blazar sample, viz., PKS B0106+013 and 1641+399 (3C345).…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Preeti Kharb , Matthew Lister , Herman Marshall , Brandon Hogan

The magnetic field conditions in astrophysical relativistic jets can be probed by multiwavelength polarimetry, which has been recently extended to X-rays. For example, one can track how the magnetic field changes in the flow of the…

High Energy Astrophysical Phenomena · Physics 2023-05-24 Laura Di Gesu , Herman L. Marshall , Steven R. Ehlert , Dawoon E. Kim , Immacolata Donnarumma , Fabrizio Tavecchio , Ioannis Liodakis , Sebastian Kiehlmann , Iván Agudo , Svetlana G. Jorstad , Fabio Muleri , Alan P. Marscher , Simonetta Puccetti , Riccardo Middei , Matteo Perri , Luigi Pacciani , Michela Negro , Roger W. Romani , Alessandro Di Marco , Dmitry Blinov , Ioakeim G. Bourbah , Evangelos Kontopodis , Nikos Mandarakas , Stylianos Romanopoulos , Raphael Skalidis , Anna Vervelaki , Carolina Casadio , Juan Escudero , Ioannis Myserlis , Mark Gurwell , Ramprasad Rao , Garrett Keating , Pouya M. Kouch , Elina Lindfors , Francisco Josè Aceituno , Maria I. Bernardos , Giacomo Bonnoli , Vìctor Casanova , Maya Garcìa-Comas , Beatriz Agìs-Gonzàlez , Cèsar Husillos , Alessandro Marchini , Alfredo Sota , Ryo Imazawa , Mahito Sasada , Yasushi Fukazawa , Koji S. Kawabata , Makoto Uemura , Tsunefumi Mizuno , Tatsuya Nakaoka , Hiroshi Akitaya , Sergey S. Savchenko , Andrey A. Vasilyev , Josè L. Gòmez , Lucio A. Antonelli , Thibault Barnouin , Raffaella Bonino , Elisabetta Cavazzuti , Luigi Costamante , Chien-Ting Chen , Nicolò Cibrario , Alessandra De Rosa , Federico Di Pierro , Manel Errando , Philip Kaaret , Vladimir Karas , Henric Krawczynski , Lindsey Lisalda , Grzegorz Madejski , Christian Malacaria , Frédéric Marin , Andrea Marinucci , Francesco Massaro , Giorgio Matt , Ikuyuki Mitsuishi , Stephen L. O'Dell , Alessandro Paggi , Abel L. Peirson , Pierre-Olivier Petrucci , Brian D. Ramsey , Allyn F. Tennant , Kinwah Wu , Matteo Bachetti , Luca Baldini , Wayne H. Baumgartner , Ronaldo Bellazzini , Stefano Bianchi , Stephen D. Bongiorno , Alessandro Brez , Niccolò Bucciantini , Fiamma Capitanio , Simone Castellano , Stefano Ciprini , Enrico Costa , Ettore Del Monte , Niccolò Di Lalla , Victor Doroshenko , Michal Dovčiak , Teruaki Enoto , Yuri Evangelista , Sergio Fabiani , Riccardo Ferrazzoli , Javier A. Garcia , Shuichi Gunji , Kiyoshi Hayashida , Jeremy Heyl , Wataru Iwakiri , Fabian Kislat , Takao Kitaguchi , Jeffery J. Kolodziejczak , Fabio La Monaca , Luca Latronico , Simone Maldera , Alberto Manfreda , C. -Y. Ng , Nicola Omodei , Chiara Oppedisano , Alessandro Papitto , George G. Pavlov , Melissa Pesce-Rollins , Maura Pilia , Andrea Possenti , Juri Poutanen , John Rankin , Ajay Ratheesh , Oliver J. Roberts , Carmelo Sgrò , Patrick Slane , Paolo Soffitta , Gloria Spandre , Douglas A. Swartz , Toru Tamagawa , Roberto Taverna , Yuzuru Tawara , Nicholas E. Thomas , Francesco Tombesi , Alessio Trois , Sergey S. Tsygankov , Roberto Turolla , Jacco Vink , Martin C. Weisskopf , Fei Xie , Silvia Zane

Generation of circularly-polarized (CP) and linearly-polarized (LP) $\gamma$-rays via the single-shot interaction of an ultraintense laser pulse with a spin-polarized counterpropagating ultrarelativistic electron beam has been investigated…

We present full-track high-resolution radio observations of the jet of the galaxy M87 at 8 and 15 GHz. These observations were taken over three consecutive days in May 2009 using the Very Long Baseline Array (VLBA), one antenna of the Very…

Astrophysics of Galaxies · Physics 2023-10-31 A. S. Nikonov , Y. Y. Kovalev , E. V. Kravchenko , I. N. Pashchenko , A. P. Lobanov

We study the linear polarization of the radio cores of eight blazars simultaneously at 22, 43, and 86 GHz with observations obtained by the Korean VLBI Network (KVN) in three epochs between late 2016 and early 2017 in the frame of the…

X-ray polarimetry promises us an unprecedented look at the structure of magnetic fields and on the processes at the base of acceleration of particles up to ultrarelativistic energies in relativistic jets. Crucial pieces of information are…

High Energy Astrophysical Phenomena · Physics 2021-05-19 Fabrizio Tavecchio

We demonstrate a mesoscopic spin polarizer/analyzer system that allows the spin polarization of current from a quantum point contact in an in-plane magnetic field to be measured. A transverse focusing geometry is used to couple current from…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 R. M. Potok , J. A. Folk , C. M. Marcus , V. Umansky

Radio pulsar B1933+16 is brightest core-radiation dominated pulsar in the Arecibo sky, and here we carry out a comprehensive high resolution polarimetric study of its radiation at both 1.5 and 4.6 GHz. At 1.5 GHz, the polarization is…

High Energy Astrophysical Phenomena · Physics 2016-07-27 Dipanjan Mitra , Joanna Rankin , Mihir Arjunwadkar

We present here uGMRT band 4 (~650MHz) polarization images of 8 BL~Lac objects belonging to the Palomar-Green (PG) `blazar' sample. A large fraction of the sources (~63%) reveal core-halo radio structures with most of the polarization…

Astrophysics of Galaxies · Physics 2023-10-16 Janhavi Baghel , P. Kharb , T. Hovatta , S. Gulati , E. Lindfors , Silpa S

A study of the polarisation and CP properties in $ZZ$ production is presented. The used data set corresponds to an integrated luminosity of 140 fb$^{-1}$ of proton-proton collisions at a centre-of-mass energy of $13$ TeV recorded by the…

High Energy Physics - Experiment · Physics 2024-02-22 ATLAS Collaboration

We present a multi-frequency, dense radio monitoring program of the blazar OJ287 using the 100m Effelsberg radio telescope. We analyze the evolution in total flux density, linear and circular polarization to study the jet structure and its…

High Energy Astrophysical Phenomena · Physics 2018-11-14 I. Myserlis , S. Komossa , E. Angelakis , J. L. Gómez , V. Karamanavis , T. P. Krichbaum , U. Bach , D. Grupe

Previous research showed most BL Lac objects and some quasars have aligned VLBI-core and optical polarizations, although some of the AGNs also showed no obvious relationship between VLBI-core and optical polarization angles. This may…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 J. C. Algaba , D. C. Gabuzda , P. S. Smith

To study the strength and structure of the magnetic field in the Galactic centre (GC) we measured Faraday rotation of the radio emission of pulsars which are seen towards the GC. Three of these pulsars have the largest rotation measures…

Astrophysics of Galaxies · Physics 2016-04-20 D. H. F. M. Schnitzeler , R. P. Eatough , K. Ferrière , M. Kramer , K. J. Lee , A. Noutsos , R. M. Shannon

The observed polarization of radio pulsars involves several peculiar effects, such as comparable amount of orthogonal polarization modes (OPMs) which often bear the same handedness of circular polarisation V. In the average profiles of…

High Energy Astrophysical Phenomena · Physics 2018-08-22 J. Dyks

The Polarized Atomic Hydrogen Gas Jet Target polarimeter (HJET) is operated at the Relativistic Heavy Ion Collider (RHIC) since 2004 to measure the absolute polarization of each colliding proton beam. Polarimeter detectors and data…

Instrumentation and Detectors · Physics 2020-06-16 A. A. Poblaguev , A. Zelenski , G. Atoian , Y. Makdisi , J. Ritter

We describe a geometric model for synchrotron radiation from blazar jets, involving multiple emission zones with turbulent magnetic fields and a transient core with a helical B field. Including the effects of jet divergence, particle…

High Energy Astrophysical Phenomena · Physics 2018-09-19 A. L. Peirson , Roger W. Romani

The study of the linear and circular polarization in AGN allows one to gain detailed information about the properties of the magnetic fields in these objects. However, especially the observation of circular polarization (CP) with…

Instrumentation and Methods for Astrophysics · Physics 2015-05-13 E. Cenacchi , A. Kraus , A. Orfei , K. -H. Mack

We have compared the parsec-scale jet linear polarization properties of the Fermi LAT-detected and non-detected sources in the complete flux-density-limited (MOJAVE-1) sample of highly beamed AGN. Of the 123 MOJAVE sources, 30 were detected…

High Energy Astrophysical Phenomena · Physics 2010-08-23 T. Hovatta , M. L. Lister , Y. Y. Kovalev , A. B. Pushkarev , T. Savolainen