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Related papers: COMPTEL Time-Averaged All-Sky Point Source Analysi…

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We present the third MAXI/GSC catalog in the high Galactic-latitude sky ($|b| > 10^\circ$) based on the 7-year data from 2009 August 13 to 2016 July 31, complementary to that in the low Galactic-latitude sky ($|b| < 10^\circ$; Hori et al.…

The identification and description of point sources is one of the oldest problems in astronomy; yet, even today the correct statistical treatment for point sources remains one of the field's hardest problems. For dim or crowded sources,…

Instrumentation and Methods for Astrophysics · Physics 2022-06-29 Gabriel H. Collin , Nicholas L. Rodd , Tyler Erjavec , Kerstin Perez

We present a search for point sources of high energy neutrinos using 3.8 years of data recorded by AMANDA-II during 2000-2006. After reconstructing muon tracks and applying selection criteria designed to optimally retain neutrino-induced…

Astrophysics · Physics 2012-08-27 The IceCube Collaboration

In this first paper of a series we develop a new technique to analyze clusters of galaxies observed during the ROSAT All-Sky Survey (RASS). We call this method the Steepness Ratio Technique (SRT). The SRT uses the convolution between the…

Astrophysics · Physics 2009-10-30 S. De Grandi , S. Molendi , H. Böhringer , G. Chincarini , W. Voges

On the basis of neutron monitor data we estimate the energy spectrum, anisotropy axis direction and pitch-angle distribution of solar energetic particles during two major ground level enhancements (GLE 59 on 14 July 2000 and GLE 70 on 13…

Space Physics · Physics 2016-03-31 Alexander Mishev , Ilya Usoskin

Although the majority of gamma-ray sources still remain unidentified, we have various kinds of information to characterize the observational properties of unidentified EGRET sources. Despite astronomical properties like locations of…

Astrophysics · Physics 2016-01-27 Olaf Reimer

We have developed a new needlet based method to detect point sources in cosmic microwave background (CMB) maps and have applied it to the WMAP 7 year data. We use both the individual frequency channels as well as internal templates, the…

Cosmology and Nongalactic Astrophysics · Physics 2012-07-11 Sandro Scodeller , Frode K. Hansen , Domenico Marinucci

We report the results of an extragalactic point source search using the 61 and 94 GHz (V- and W-band) temperature maps from the Wilkinson Microwave Anisotropy Probe (WMAP). Applying a method that cancels the ``noise'' due to the CMB…

Astrophysics · Physics 2009-11-13 Xi Chen , Edward L. Wright

GRANDProto300 (GP300) is a prototype array of the GRAND experiment, designed to validate the technique of autonomous radio-detection of astroparticles by detecting cosmic rays with energies between 10$^{17}$-10$^{18.5}$ eV. This observation…

Instrumentation and Methods for Astrophysics · Physics 2025-09-03 Jolan Lavoisier , Xishui Tian , Kumiko Kotera , Takashi Sako , Hanrui Wang , Mauricio Bustamante

Astrophysical neutrino events have been measured in the last couple of years, which show an isotropic distribution, and the current discussion is their astrophysical origin. We use both isotropic and anisotropic components of the diffuse…

High Energy Astrophysical Phenomena · Physics 2019-02-14 Ariane Dekker , Shin'ichiro Ando

The Planck space mission has observed the first three rotational lines of emission of Galactic CO. Those maps, however, are either noisy, or contaminated by astrophysical emissions from different origin. We revisit those data products to…

Astrophysics of Galaxies · Physics 2024-08-07 Shamik Ghosh , Mathieu Remazeilles , Jacques Delabrouille

We aim to evaluate the possibility of improving the ICRS realization starting from the ICRF2 catalogue by investigating the coordinate time series of radio sources observed by VLBI between 1979 and 2016. Sources with long observational…

Astrophysics of Galaxies · Physics 2017-02-14 N. Liu , J. -C. Liu , Z. Zhu

The eROSITA instrument aboard the Spectrum Roentgen Gamma (SRG) satellite has performed its first all-sky survey between December 2019 and June 2020. This paper presents the resulting hard X-ray (2.3-5 keV) sample, the first created from an…

High Energy Astrophysical Phenomena · Physics 2026-02-11 Sophia G. H. Waddell , J. Buchner , K. Nandra , M. Salvato , A. Merloni , I. Gauger , Th. Boller , R. Seppi , J. Wolf , T. Liu , M. Brusa , J. Comparat , T. Dwelly , Z. Igo , B. Musiimenta

We present the results of a search for cosmic ray point sources at energies above 40 EeV in the combined data sets recorded by the AGASA and HiRes stereo experiments. The analysis is based on a maximum likelihood ratio test using the…

Astrophysics · Physics 2008-11-26 s Eye Collaboration , G. R. Farrar

Context: In 6 years of operation, INTEGRAL/ISGRI revealed more than 500 sources. Many of these sources are variable. Taking into account that nearly half of INTEGRAL/ISGRI sources are new and many of them are still unidentified, the…

High Energy Astrophysical Phenomena · Physics 2015-05-18 I. Telezhinsky , D. Eckert , V. Savchenko , A. Neronov , N. Produit , T. J. -L. Courvoisier

The INTEGRAL/SPI, X-gamma-ray spectrometer (20 keV - 8 MeV) is an instrument for which recovering source intensity variations is not straightforward and can constitute a difficulty for data analysis. In most cases, determining the source…

Instrumentation and Methods for Astrophysics · Physics 2015-06-16 L. Bouchet , P. -R Amestoy , A. Buttari , F. -H. Rouet , M. Chauvin

Modeling the extragalactic astroparticle skies involves reconstructing the 3D distribution of the most extreme sources in the Universe. Full-sky tomographic surveys at near-infrared wavelengths have already enabled the astroparticle…

High Energy Astrophysical Phenomena · Physics 2021-08-25 J. Biteau , S. Marafico , Y. Kerfis , O. Deligny

We present results on spectral index distributions, number counts, redshift distribution and other general statistical properties of extragalactic point sources in the NEWPS5 sample L\'opez-Caniego et al. (2007). The flux calibrations at…

We present the 2SXPS (Swift-XRT Point Source) catalog, containing 206,335 point sources detected by the Swift X-ray Telescope (XRT) in the 0.3--10 keV energy range. This catalog represents a significant improvement over 1SXPS, with double…

Instrumentation and Methods for Astrophysics · Physics 2020-04-08 P. A. Evans , K. L. Page , J. P. Osborne , A. P. Beardmore , R. Willingale , D. N. Burrows , J. A. Kennea , M. Perri , M. Capalbi , G. Tagliaferri , S. B. Cenko

The Fermi-LAT collaboration has recently released a new point source catalog, referred to as 4FGL. For the first time, we perform a template fit using information from this new catalog and find that the Galactic center excess is still…

High Energy Astrophysical Phenomena · Physics 2020-07-01 Yi-Ming Zhong , Samuel D. McDermott , Ilias Cholis , Patrick J. Fox