Articles with "galactic centre" as a keyword



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Searching for pulsars in the Galactic centre at 3 and 2 mm

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Published in 2021 at "Astronomy and Astrophysics"

DOI: 10.1051/0004-6361/202140775

Abstract: Pulsars in the Galactic Centre promise to enable unparalleled tests of gravity theories and black hole physics and serve as probes of the stellar formation history and evolution and the interstellar medium in the complex… read more here.

Keywords: frequency; centre; galactic centre; population ... See more keywords
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Dark matter substructure cannot explain properties of the Fermi Galactic Centre excess

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Published in 2018 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2018/07/060

Abstract: An excess of gamma rays has been identified at the centre of the Milky Way, and annihilation of dark matter has been posited as a potential source. This hypothesis faces significant challenges: difficulty characterizing astrophysical… read more here.

Keywords: matter substructure; matter; dark matter; galactic centre ... See more keywords
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Feedback between Sgr A and B: AGN–starburst connection in the galactic centre

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Published in 2020 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staa2389

Abstract: Propagation of fast-mode magneto-hydrodynamic (MHD) compression waves is traced in the Galactic Centre. MHD waves produced by the active Galactic nucleus (Sgr A) focus on the molecular clouds such as Sgr B in the central… read more here.

Keywords: sgr; agn; mhd waves; galactic centre ... See more keywords
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Interaction of the galactic-centre super bubbles with the gaseous disc

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Published in 2021 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stab1857

Abstract: The interaction of Galactic centre (GC) super bubbles (GSBs) with the gaseous disc and halo of the Milky Way is investigated using radio continuum, X-ray, H i, and CO line surveys. The radio North Polar Spur… read more here.

Keywords: super bubbles; gaseous disc; interaction galactic; centre super ... See more keywords
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Erratum: Seeding the Galactic Centre gas stream: gravitational instabilities set the initial conditions for the formation of protocluster clouds: Table 1.

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Published in 2017 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stw2555

Abstract: LJMU has developed LJMU Research Online for users to access the research output of the University more effectively. Copyright © and Moral Rights for the papers on this site are retained by the individual authors… read more here.

Keywords: research; erratum seeding; centre gas; seeding galactic ... See more keywords
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Complex organic molecules in the Galactic Centre: the N-bearing family

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Published in 2018 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/sty1174

Abstract: We present an unbiased spectral line survey toward the Galactic Centre (GC) quiescent giant molecular cloud (QGMC), G+0.693 using the GBT and IRAM 30$\,$ telescopes. Our study highlights an extremely rich organic inventory of abundant… read more here.

Keywords: bearing species; chemistry; complex organic; organic molecules ... See more keywords
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Tidal breakup of triple stars in the Galactic Centre

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Published in 2018 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/sty145

Abstract: The last decade has seen the detection of fast moving stars in the Galactic halo, the so-called hypervelocity stars (HVSs). While the bulk of this population is likely the result of a close encounter between… read more here.

Keywords: triple; tidal breakup; galactic centre; stars galactic ... See more keywords
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A common origin for the circumnuclear disc and the nearby molecular clouds in the Galactic Centre

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Published in 2019 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stz2147

Abstract: The origin of the molecular clouds orbiting SgrA* is one of the most debated questions about our Galactic Centre. Here, we present the hydrodynamic simulation of a molecular cloud infalling towards SgrA*, performed with the… read more here.

Keywords: common origin; molecular clouds; circumnuclear disc; galactic centre ... See more keywords
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The dynamical evolution of molecular clouds near the Galactic Centre – II. Spatial structure and kinematics of simulated clouds

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Published in 2019 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stz381

Abstract: The evolution of molecular clouds in galactic centres is thought to differ from that in galactic discs due to a significant influence of the external gravitational potential. We present a set of numerical simulations of… read more here.

Keywords: evolution molecular; molecular clouds; kinematics; galactic centre ... See more keywords
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Accretion of magnetized stellar winds in the Galactic centre: implications for Sgr A* and PSR J1745−2900

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Published in 2018 at "Monthly Notices of the Royal Astronomical Society: Letters"

DOI: 10.1093/mnrasl/sly201

Abstract: The observed rotation measures (RMs) towards the galactic centre magnetar and towards Sagittarius A* provide a strong constraint on MHD models of the galactic centre accretion flow, probing distances from the black hole separated by… read more here.

Keywords: stellar winds; accretion; magnetized stellar; j1745 2900 ... See more keywords