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Related papers: Spatial and Spectral Modeling of the Gamma-ray Dis…

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We investigate structural, kinematical, and chemical properties of stars and gas in the Small Magellanic Cloud (SMC) interacting with the Large Magellanic Cloud (LMC) and the Galaxy based on a series of self-consistent chemodynamical…

Astrophysics · Physics 2009-11-13 Kenji Bekki , Masashi Chiba

We studied the spatial distribution of young and old stellar populations along the western half part of the minor axis of the Large Magellanic Cloud (LMC) using Washington MT1 photometry of selected fields, which span a deprojected distance…

Astrophysics of Galaxies · Physics 2017-12-06 Andrés E. Piatti

We perform two distinct spatio-spectral reconstructions of the gamma-ray sky in the range of 0.56-316 GeV based on Fermi Large Area Telescope (LAT) data. Both describe the sky brightness to be composed of a diffuse-emission and a…

High Energy Astrophysical Phenomena · Physics 2023-12-13 Lukas I. Platz , Jakob Knollmüller , Philipp Arras , Philipp Frank , Martin Reinecke , Dominik Jüstel , Torsten A. Enßlin

We present an extinction map of the Large Magellanic Cloud (LMC), using 204,502 stars from the Two Micron All Sky Survey point source catalog. We first use the NICE method to determine the reddening distribution, \ehk and \ejh, which we…

Astrophysics · Physics 2011-02-11 Nia Imara , Leo Blitz

It is widely accepted that cosmic rays (CRs) up to at least PeV energies are Galactic in origin. Accelerated particles are injected into the interstellar medium where they propagate to the farthest reaches of the Milky Way, including a…

I point out a correlation between gamma-ray emissivity and the historical star formation rate in the Large Magellanic Cloud ~12.5 Myr ago. This correlation bolsters the view that CRs in the LMC are accelerated by conglomerations of…

Astrophysics of Galaxies · Physics 2015-05-18 Yousaf M. Butt

Fermi/LAT observations of star-forming galaxies in the ~0.1-100GeV range have made possible a first population study. Evidence was found for a correlation between gamma-ray luminosity and tracers of the star formation activity. Studying…

High Energy Astrophysical Phenomena · Physics 2015-06-18 Pierrick Martin

We present our new model for the description of the very high energy Galactic gamma-ray emission based on a discrete injection of cosmic rays by individual sources. We investigate the morphology of the very high energy gamma-ray sky, the…

High Energy Astrophysical Phenomena · Physics 2025-01-13 Samy Kaci , Gwenael Giacinti

We measure the properties of optical emission lines in multiple locations across the Large Magellanic Cloud (LMC) using the Australian National University 2.3-metre telescope and the WiFeS integral field spectrograph. From these…

Astrophysics of Galaxies · Physics 2024-03-05 Philip Lah , Matthew Colless , Francesco D'Eugenio , Brent Groves , Joseph D. Gelfand

We performed a spectro-morphological analysis of the diffuse emission in the Galactic center region with H.E.S.S. gamma-ray data. We relied on templates to model the diffuse emissions (the Galactic center ridge and the foreground component)…

High Energy Astrophysical Phenomena · Physics 2025-07-02 J. Devin , A. Lemière , K. Streil , R. Terrier , C. van Eldik

We present results from the first application of the Grid of Red Supergiant and Asymptotic Giant Branch ModelS (GRAMS) model grid to the entire evolved stellar population of the Large Magellanic Cloud (LMC). GRAMS is a pre-computed grid of…

Solar and Stellar Astrophysics · Physics 2015-05-06 D. Riebel , S. Srinivasan , B. Sargent , M. Meixner

Cosmic rays fill up the entire volume of galaxies, providing an important source of heating and ionisation of the interstellar medium, and may play a significant role in the regulation of star formation and galactic evolution. Diffuse…

High Energy Astrophysical Phenomena · Physics 2015-06-03 Troy A. Porter

Galaxy clusters are predicted to produce gamma-rays through cosmic ray interactions and/or dark matter annihilation, potentially detectable by the Fermi Large Area Telescope (Fermi-LAT). We present a new, independent stacking analysis of…

High Energy Astrophysical Phenomena · Physics 2015-06-19 Rhiannon D. Griffin , Xinyu Dai , Christopher S. Kochanek

Cosmic-ray electrons and positrons propagating in the Galaxy produce diffuse gamma-rays via the inverse Compton (IC) process. The low energy target photon populations with which the cosmic-rays interact during propagation are produced by…

Astrophysics · Physics 2007-05-23 T. A. Porter , A. W. Strong

Cosmic rays interacting with gas and photon fields in the Galaxy produce interstellar gamma-ray emission (IGE), which accounts for almost 50% of the photons detected at gamma-ray energies. Models of this IGE have to be very accurate for…

High Energy Astrophysical Phenomena · Physics 2019-02-28 E. Orlando

The standard approach to cosmic-ray (CR) propagation in the Galaxy is based on the assumption that local transport properties can be extrapolated to the whole CR confining volume. Such models tend to underestimate the gamma-ray flux above…

High Energy Astrophysical Phenomena · Physics 2015-05-06 Daniele Gaggero , Alfredo Urbano , Mauro Valli , Piero Ullio

The first X-ray survey of the Large Magellanic Cloud (LMC) was performed with the Einstein satellite, revealing diffuse X-ray emission from hot gas and discrete X-ray sources. The ROSAT observations between 1990 and 1998 supplied the most…

Astrophysics · Physics 2007-05-23 F. Haberl

We present the results of a cluster search in the gamma-ray sky images of the Large Magellanic Cloud (LMC) region by means of the Minimum Spanning Tree (MST) and DBSCAN algorithms, at energies higher than 6 and 10 GeV, using 12 years of…

High Energy Astrophysical Phenomena · Physics 2022-07-13 R. Campana , E. Massaro , F. Bocchino , M. Miceli , S. Orlando , A. Tramacere

Employing data collected during the first 25 months' observations by the Fermi-LAT, we describe and subsequently seek to model the very high energy (>300 MeV) emission from the central few parsecs of our Galaxy. We analyze the…

High Energy Astrophysical Phenomena · Physics 2011-09-08 M. Chernyakova , D. Malyshev , F. A. Aharonian , R. M. Crocker , D. I. Jones

Current theories predict relativistic hadronic particle populations in clusters of galaxies in addition to the already observed relativistic leptons. In these scenarios hadronic interactions give rise to neutral pions which decay into…

High Energy Astrophysical Phenomena · Physics 2014-05-06 M. Ackermann , M. Ajello , A. Albert , A. Allafort , W. B. Atwood , L. Baldini , J. Ballet , G. Barbiellini , D. Bastieri , K. Bechtol , R. Bellazzini , E. D. Bloom , E. Bonamente , E. Bottacini , T. J. Brandt , J. Bregeon , M. Brigida , P. Bruel , R. Buehler , S. Buson , G. A. Caliandro , R. A. Cameron , P. A. Caraveo , E. Cavazzuti , R. C. G. Chaves , J. Chiang , G. Chiaro , S. Ciprini , R. Claus , J. Cohen-Tanugi , J. Conrad , F. D'Ammando , A. de Angelis , F. de Palma , C. D. Dermer , S. W. Digel , P. S. Drell , A. Drlica-Wagner , C. Favuzzi , A. Franckowiak , S. Funk , P. Fusco , F. Gargano , D. Gasparrini , S. Germani , N. Giglietto , F. Giordano , M. Giroletti , G. Godfrey , G. A. Gomez-Vargas , I. A. Grenier , S. Guiriec , M. Gustafsson , D. Hadasch , M. Hayashida , J. Hewitt , R. E. Hughes , T. E. Jeltema , G. Jóhannesson , A. S. Johnson , T. Kamae , J. Kataoka , J. Knödlseder , M. Kuss , J. Lande , S. Larsson , L. Latronico , M. Llena Garde , F. Longo , F. Loparco , M. N. Lovellette , P. Lubrano , M. Mayer , M. N. Mazziotta , J. E. McEnery , P. F. Michelson , W. Mitthumsiri , T. Mizuno , M. E. Monzani , A. Morselli , I. V. Moskalenko , S. Murgia , R. Nemmen , E. Nuss , T. Ohsugi , M. Orienti , E. Orlando , J. F. Ormes , J. S. Perkins , M. Pesce-Rollins , F. Piron , G. Pivato , S. Rainò , R. Rando , M. Razzano , S. Razzaque , A. Reimer , O. Reimer , J. Ruan , M. Sánchez-Conde , A. Schulz , C. Sgrò , E. J. Siskind , G. Spandre , P. Spinelli , E. Storm , A. W. Strong , D. J. Suson , H. Takahashi , J. G. Thayer , J. B. Thayer , D. J. Thompson , L. Tibaldo , M. Tinivella , D. F. Torres , E. Troja , Y. Uchiyama , T. L. Usher , J. Vandenbroucke , G. Vianello , V. Vitale , B. L. Winer , K. S. Wood , S. Zimmer , C. Pfrommer , A. Pinzke