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Crosscorrelation of the outputs of two Gravitational Wave (GW) detectors has recently been proposed [1] as a method for detecting statistical association between GWs and Gamma Ray Bursts (GRBs). Unfortunately, the method can be effectively…

Astrophysics · Physics 2009-11-07 G. Modestino , A. Moleti

Apparently, Gamma-Ray Bursts (GRBs) are all but standard candles. Their emission is collimated into a cone and the received flux depends on the cone aperture angle. Fortunately we can derive the aperture angle through an achromatic…

Astrophysics · Physics 2010-11-11 G. Ghisellini , G. Ghirlanda , C. Firmani , D. Lazzati , V. Avila-Reese , .

We measure the angular two-point correlation and angular power spectrum from the NRAO VLA Sky Survey (NVSS) of radio galaxies. They are found to be consistent with the best-fit cosmological model from the Planck analysis, and with the…

Cosmology and Nongalactic Astrophysics · Physics 2016-06-29 Song Chen , Dominik J. Schwarz

The diffuse Galactic synchrotron emission should exhibit a low level of diffuse circular polarization (CP) due to the circular motions of the emitting relativistic electrons. This probes the Galactic magnetic field in a similar way as the…

High Energy Astrophysical Phenomena · Physics 2017-09-06 Torsten A. Enßlin , Sebastian Hutschenreuter , Valentina Vacca , Niels Oppermann

Correlations among pulse properties in the prompt emission of long GRBs can potentially be used as cosmological distance indicators to estimate redshifts of GRBs to which these pulses belong. We demonstrate application of this technique to…

High Energy Astrophysical Phenomena · Physics 2009-06-25 Jon Hakkila , P. Chris Fragile , Timothy W. Giblin

The astrophysical interpretation of recent experimental observations of cosmic rays relies increasingly on Monte Carlo simulations of cosmic ray propagation and acceleration. Depending on the energy range of interest, several different…

High Energy Astrophysical Phenomena · Physics 2019-05-22 R. Alves Batista , J. Becker Tjus , A. Dundovic , M. Erdmann , C. Heiter , K. -H. Kampert , D. Kuempel , L. Merten , G. Müller , G. Sigl , A. v. Vliet , D. Walz , T. Winchen , M. Wirtz

Baryonic feedback processes associated with galaxy formation directly influence the large-scale structure by redistributing gas. Recent measurements of the kinetic Sunyaev-Zel'dovich effect and stacks of X-ray emission from optically…

Cosmology and Nongalactic Astrophysics · Physics 2026-02-17 William McDonald , Joop Schaye , Konrad Kuijken , John Helly , Joey Braspenning , Matthieu Schaller

Cosmic rays have valuable information about universe surroundings us. Finding energy, mass and arrival direction of primary cosmic ray particle are the most important aspects of extensive air shower studies. In order to determine these…

Instrumentation and Methods for Astrophysics · Physics 2011-03-17 H. Hedayati Kh. , A. Anvari , M. Bahmanabadi , M. Khakian Ghomi , J. Samimi

A large fraction of known terrestrial-size exoplanets located in the Habitable Zone of M-dwarfs are expected to be tidally-locked. Numerous efforts have been conducted to study the climate of such planets, using in particular 3-D Global…

Earth and Planetary Astrophysics · Physics 2021-06-09 Maxence Lefèvre , Martin Turbet , Raymond Pierrehumbert

We study forecasts for the accuracy of the determination of cosmological parameters from future large scale photometric surveys obtained using the full shape of the 2-point galaxy angular correlation function. The effects of linear…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 F. Sobreira , F. de Simoni , R. Rosenfeld , L. A. N. da Costa , M. A. G. Maia , M. Makler

High energy $\gamma$ rays from Giant Molecular Clouds (GMCs) carry direct information about the spatial and energy distributions of Galactic Cosmic Rays (CRs). The recently released catalogs of GMCs contain sufficiently massive clouds to be…

High Energy Astrophysical Phenomena · Physics 2020-04-22 Felix Aharonian , Giada Peron , Ruizhi Yang , Sabrina Casanova , Roberta Zanin

The $\gamma$-ray observation of interstellar gas provides a unique way to probe the cosmic rays (CRs) outside the solar system. In this work, we use an updated version of Fermi-LAT data and recent multi-wavelength tracers of interstellar…

High Energy Astrophysical Phenomena · Physics 2019-06-19 Zhao-Qiang Shen , Xiaoyuan Huang , Qiang Yuan , Yi-Zhong Fan , Da-Ming Wei

We present the assessment of a diffusion-dominated mean field axisymmetric dynamo model in reproducing historical solar activity and forecast for solar cycle 25. Previous studies point to the Sun's polar magnetic field as an important proxy…

Solar and Stellar Astrophysics · Physics 2018-06-29 Alejandro Macario-Rojas , Katharine L. Smith , Peter C. E. Roberts

We present a new approach for extracting information about cosmic magnetic fields using cross-correlations between extragalactic Faraday rotation measure (RM) catalogs and galaxy surveys. Specifically, we propose measuring the two-point…

Cosmology and Nongalactic Astrophysics · Physics 2025-12-09 Zekai Zhang , Adam Lidz

In recent years cross correlation of lensing of the Cosmic Microwave Background (CMB) with other large scale structure (LSS) tracers has been used as a method to detect CMB lensing. Current experiments are also becoming sensitive enough to…

Cosmology and Nongalactic Astrophysics · Physics 2014-02-26 Ruth Pearson , Oliver Zahn

AMS-02 on the International Space Station has been releasing data of unprecedented accuracy. This poses new challenges for their interpretation. We refine the methodology to get a statistically sound determination of the cosmic-ray…

High Energy Astrophysical Phenomena · Physics 2019-09-04 L. Derome , D. Maurin , P. Salati , M. Boudaud , Y. Génolini , P. Kunzé

We present a novel interpretation of the $\gamma$-ray diffuse emission measured by Fermi-LAT and H.E.S.S. in the Galactic center (GC) region and the Galactic ridge (GR). In the first part we perform a data-driven analysis based on PASS8…

High Energy Astrophysical Phenomena · Physics 2017-07-26 D. Gaggero , D. Grasso , A. Marinelli , M. Taoso , A. Urbano

The energy spectra of cosmic rays (CRs) below tens of GeV are significantly modulated by solar activity within the heliosphere. To investigate the properties of Galactic CRs, it is important to determine the unmodulated local interstellar…

High Energy Astrophysical Phenomena · Physics 2025-09-24 Meng-Jie Zhao , Xing-Jian Lv , Xiao-Jun Bi , Kun Fang , Peng-Fei Yin

We present an improved method for calculating the parallel and perpendicular velocity correlation functions directly from peculiar velocity surveys using weighted maximum-likelihood estimators. A central feature of the new method is the use…

Cosmology and Nongalactic Astrophysics · Physics 2021-09-29 Yuyu Wang , Sarah Peery , Hume A. Feldman , Richard Watkins
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