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We present theoretical modelling of the electron distribution produced by annihilating neutralino dark matter in dwarf spheroidal galaxies (dSphs). In particular, we follow up the idea of Colafrancesco (2004) and find that such electrons…

Astrophysics · Physics 2009-11-11 Thomas L. Culverhouse , N. Wyn Evans , S. Colafrancesco

Plasma flow-obstacle interactions, such as those between an exoplanet's magnetosphere and the host star's stellar wind, may lead to detectable radio emissions. Despite many attempts to detect magnetospheric (auroral) radio emissions from…

Earth and Planetary Astrophysics · Physics 2024-05-01 Matthew Route

We calculate intensity and angular power spectrum of the cosmological background of synchrotron emission from cold dark matter annihilations into electron positron pairs. We compare this background with intensity and anisotropy of…

Astrophysics · Physics 2011-07-13 Le Zhang , Guenter Sigl

The ARCADE 2 collaboration has reported a significant excess in the isotropic radio background, whose homogeneity cannot be reconciled with clustered sources. This suggests a cosmological origin prior to structure formation. We investigate…

Cosmology and Nongalactic Astrophysics · Physics 2013-02-06 James M. Cline , Aaron C. Vincent

A dense ionized cloud of gas has been recently discovered to be moving directly toward the supermassive black hole, Sgr A*, at the Galactic Center. In June 2013, at the pericenter of its highly eccentric orbit, the cloud will be…

Astrophysics of Galaxies · Physics 2015-06-05 Ramesh Narayan , Feryal Ozel , Lorenzo Sironi

This is a review of some of the highlights of the 6th workshop on the physics of the tau lepton and its neutrino. This includes the test of lepton universality, measurement of Lorentz Structure, study of hadronic decays, direct evidence of…

High Energy Physics - Experiment · Physics 2009-11-07 K. K. Gan

The Jiangmen Underground Neutrino Observatory (JUNO) is a next-generation neutrino experiment under construction in China expected to be completed in 2022. As the main goal it aims to determine the neutrino mass ordering with 3-4 $\sigma$…

Instrumentation and Detectors · Physics 2020-12-30 Philipp Kampmann , Yaping Cheng , Livia Ludhova

We present an updated version of the {\it SimProp} Monte Carlo code to study the propagation of ultra high energy cosmic rays in astrophysical backgrounds computing the cosmogenic neutrino fluxes expected on earth. The study of secondary…

High Energy Astrophysical Phenomena · Physics 2015-08-11 R. Aloisio , D. Boncioli , A. di Matteo , A. F. Grillo , S. Petrera , F. Salamida

Comptonization of the cosmic microwave background (CMB) radiation by hot gas in clusters of galaxies - the Sunyaev-Zeldovich (S-Z) effect - is of great astrophysical and cosmological significance. In recent years observations of the effect…

Astrophysics · Physics 2007-05-23 Yoel Rephaeli

We investigate the low-frequency spectral emission from a network of superconducting cosmic string loops in hopes of explaining the observed radio synchrotron background. After considering constraints from a variety of astrophysical and…

Cosmology and Nongalactic Astrophysics · Physics 2023-08-08 Bryce Cyr , Jens Chluba , Sandeep Kumar Acharya

Galaxy clusters and surrounding medium, can be studied using X-ray bremsstrahlung emission and Sunyaev Zel'dovich (SZ) effect. Both astrophysical probes, sample the same environment with different parameters dependance. The SZ effect is…

The NOW2000 Workshop summarized the present status and future possibilities for all aspects of neutrino physics and astrophysics. Neutrino oscillation physics has truly come of age in the last few years. It is now data driven (analogous to…

High Energy Physics - Phenomenology · Physics 2009-11-07 Paul Langacker

We describe an upgrade to the Cosmic Background Imager instrument to increase its surface brightness sensitivity at small angular scales. The upgrade consisted of replacing the thirteen 0.9-m antennas with 1.4-m antennas incorporating a…

Low-frequency radio observations of diffuse synchrotron radiation offer a unique vantage point for investigating the intricate relationship between gas and magnetic fields in the formation of structures within the Galaxy, spanning from the…

Astrophysics of Galaxies · Physics 2024-05-29 Andrea Bracco , Marco Padovani , Daniele Galli

Radio relics are Mpc-scale diffuse synchrotron sources found in galaxy cluster outskirts. They are believed to be associated with large-scale shocks propagating through the intra-cluster medium, although the connection between radio relics…

Cosmology and Nongalactic Astrophysics · Physics 2015-01-19 Jens Erler , Kaustuv Basu , Monica Trasatti , Ulrich Klein , Frank Bertoldi

We study the synchrotron radio emission from extra-planar regions of star forming galaxies. We use ideal magneto-hydrodynamical (MHD) simulations of a rotating Milky Way-type disk galaxy with distributed star formation sites for three star…

Astrophysics of Galaxies · Physics 2020-01-08 Aditi Vijayan , Biman B. Nath , Prateek Sharma , Yuri Shchekinov

This volume contains the proceedings of the 11th International Workshop on Verification of Infinite-State Systems (INFINITY 2009). The workshop was held in Bologna, Italy on August 31, 2009, as a satellite event to the 20th International…

Logic in Computer Science · Computer Science 2009-11-19 Axel Legay

We summarize the outcome of the 13th meeting of the International Astronomical Consortium for High Energy Calibration (IACHEC), held at Tenuta dei Ciclamini (Avigliano Umbro, Italy) in April 2018. Fifty-one scientists directly involved in…

Instrumentation and Methods for Astrophysics · Physics 2019-01-07 K. K. Madsen , L. Natalucci , G. Belanger , C. E. Grant , M. Guainazzi , V. Kashyap , H. L. Marshall , E. D. Miller , J. Nevalainen , P. P. Plucinsky , Y. Terada