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Related papers: Dynamical Formation of Millisecond Pulsars in Glob…

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Globular cluster systems exhibit a bewildering variety of characteristics. No single scenario appears to be able to account for the wide range of specific globular cluster frequencies that are observed in galaxies of various types. The…

Astrophysics · Physics 2009-10-31 Sidney van den Bergh

I-band CCD images of two large regions of the Galactic globular cluster NGC 1261 have been used to construct stellar luminosity functions (LF) for 14000 stars in three annuli from 1.4' from the cluster center to the tidal radius. The LFs…

Astrophysics · Physics 2007-05-23 M. Zoccali , G. Piotto , S. R. Zaggia , M. Capaccioli

Millisecond pulsars (MSPs) have been firmly established as a class of gamma-ray emitters via the detection of pulsations above 0.1 GeV from eight MSPs by the Fermi Large Area Telescope (LAT). Using thirteen months of LAT data significant…

High Energy Astrophysical Phenomena · Physics 2015-05-18 The Fermi LAT Collaboration , Pulsar Timing Consortium

Currently three isolated radio pulsars and one binary radio pulsar with no evidence of any previous recycling are known in 97 surveyed Galactic globular clusters. As pointed out by Lyne et al., the presence of these pulsars cannot be…

Molecular clouds at the Galactic center (GC) have environments considerably different from their disk counterparts. The GC may therefore provide important clues about how the environment affects star formation. Interestingly, while the…

High Energy Astrophysical Phenomena · Physics 2015-05-13 Marco Fatuzzo , Fulvio Melia

Globular clusters (GCs) are thought to be ancient relics from the early formative phase of galaxies, although their physical origin remains uncertain. GCs are most numerous around massive elliptical galaxies, where they can exhibit a broad…

Astrophysics of Galaxies · Physics 2020-10-13 Jeremy Lim , Emily Wong , Youichi Ohyama , Tom Broadhurst , Elinor Medezinski

We estimate the conventional astrophysical emission from dwarf spheroidal satellite galaxies (dSphs) of the Milky Way, focusing on millisecond pulsars (MSPs), and evaluate the potential for confusion with dark matter (DM) annihilation…

High Energy Astrophysical Phenomena · Physics 2016-11-15 Miles Winter , Gabrijela Zaharijas , Keith Bechtol , Justin Vandenbroucke

The extreme timing stability of radio millisecond pulsars (MSPs) combined with their exotic environment and evolutionary history makes them excellent laboratories to probe matter in extreme condition. Population studies indicate that we…

High Energy Astrophysical Phenomena · Physics 2022-04-06 Bhaswati Bhattacharyya , Jayanta Roy

The decimetric luminosity of many galaxies appears to be dominated by synchrotron emission excited by supernova explosions. Simple models suggest that the luminosity is directly proportional to the rate of supernova explosions of massive…

Astrophysics · Physics 2009-10-30 L. E. Cram

We present results of our pulsar population synthesis of ordinary isolated and millisecond pulsars in the Galactic plane. Over the past several years, a program has been developed to simulate pulsar birth, evolution and emission using Monte…

Astrophysics · Physics 2008-11-26 Peter L. Gonthier , Sarah A. Story , Brian D. Clow , Alice K. Harding

The observed dynamical mass-to-light (M/L) ratios of globular clusters (GCs) are systematically lower than those expected from `canonical' simple stellar population models, which do not account for the preferential loss of low-mass stars…

Astrophysics of Galaxies · Physics 2015-05-13 J. M. Diederik Kruijssen , Steffen Mieske

(Abridged) Objects with radii of 10 to 100 pc and masses in the range from 10^6 to 10^8 M_sun have been discovered during the past decade. These so-called ultra compact dwarf galaxies (UCDs) constitute a transition between classical star…

Astrophysics · Physics 2008-04-01 J. Dabringhausen , M. Hilker , P. Kroupa

This paper presents the discovery and timing parameters for five millisecond pulsars (MSPs), four in binary systems with probable white dwarf companions and one isolated, found in ongoing processing of the High Time Resolution Universe…

Data are presently available on the luminosities and half-light radii of 101 globular clusters associated with low-luminosity parent galaxies. The luminosity distribution of globulars embedded in dwarf galaxies having $M_{v} > -16$ is found…

Astrophysics · Physics 2009-11-11 Sidney van den Bergh

We combine our compilation of photometry of M31 globular cluster and probable cluster candidates with new near-infrared photometry for 30 objects. Using these data we determine the globular cluster luminosity function (GCLF) in multiple…

Astrophysics · Physics 2007-05-23 P. Barmby , J. P. Huchra , J. P. Brodie

Recent work has shown that NIR Hubble Space Telescope (HST) photometry allows us to disentangle multiple populations (MPs) among M dwarfs of globular clusters (GCs) and investigate this phenomenon in very low-mass (VLM) stars. Here, we…

The Galactic Centre {\gamma}-ray excess (GCE), observed by Fermi-LAT around Sgr A*, exceeds expectations from standard cosmic-ray models and is commonly attributed either to dark matter annihilation or to unresolved millisecond pulsars…

High Energy Astrophysical Phenomena · Physics 2026-04-02 M. Kalambay , M. Ishchenko , D. Kuvatova , T. Panamarev , P. Berczik

We present the analysis of the radial distributions and kinematic properties of the multiple stellar populations (mPOPs) hosted in the globular cluster (GC) NGC 6352 as part of the Hubble Space Telescope (HST) "UV Legacy Survey of Galactic…

Solar and Stellar Astrophysics · Physics 2019-03-20 M. Libralato , A. Bellini , G. Piotto , D. Nardiello , R. P. van der Marel , J. Anderson , L. R. Bedin , E. Vesperini

We investigate the dynamical formation and evolution of binaries containing neutron stars in dense globular clusters. Our numerical simulations combine a simple Monte Carlo prescription for stellar dynamics, a sophisticated binary…

Astrophysics · Physics 2007-05-23 Natalia Ivanova , John M. Fregeau , Frederic A. Rasio

Globular Clusters (GCs) are generally treated as natural validators of simple stellar population (SSP) models. However, there are still some differences between real GCs and SSPs. In this work we use a direct $N$-body simulation code {\hf…

Astrophysics of Galaxies · Physics 2015-06-22 Yulong Zhuang , Fenghui Zhang , Peter Anders , Zhifeng Ruan , Liantao Cheng , Xiaoyu Kang
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