YNAO OpenIR  > 高能天体物理研究组
Millisecond Pulsar Origin of the Galactic Center Excess and Extended Gamma-Ray Emission from Andromeda: A Closer Look
Eckner, Christopher1; Hou X(侯贤)2,3,4; Serpico, Pasquale D.5; Winter, Miles6; Zaharijas, Gabrijela1,7; Martin, Pierrick8; di Mauro, Mattia9; Mirabal, Nestor10,11; Petrovic, Jovana12; Prodanovic, Tijana12; Vandenbroucke, Justin5
Source PublicationASTROPHYSICAL JOURNAL
2018-07-20
Volume862Issue:1
DOI10.3847/1538-4357/aac029
Contribution Rank第2完成单位
Indexed BySCI
KeywordGamma Rays: Galaxies Local Group Pulsars: General
Abstract

A new measurement of a spatially extended gamma-ray signal from the center of the Andromeda galaxy (M31) has recently been published by the Fermi-LAT collaboration, reporting that the emission broadly resembles the so-called Galactic center excess (GCE) of the Milky Way (MW). The weight of the evidence is steadily accumulating on a millisecond pulsar (MSPs) origin for the GCE. These elements prompt us to compare these observations with what is, perhaps, the simplest model for an MSP population, which is solely obtained by rescaling of the MSP luminosity function that is determined in the local MW disk via the respective stellar mass of the systems. Remarkably, we find that without free fitting parameters, this model can account for both the energetics and the morphology of the GCE within uncertainties. For M31, the estimated luminosity due to primordial MSPs is expected to only contribute about a quarter of the detected emission, although a stronger contribution cannot be excluded given the large uncertainties. If correct, the model predicts that the M31 disk emission due to MSPs is not far below the present upper bound. We also discuss additional refinements of this simple model. Using the correlation between globular cluster gamma-ray luminosity and stellar encounter rate, we gauge the dynamical MSP formation in the bulge. This component is expected to contribute to the GCE only at a level of less than or similar to 5%, it could affect the signal's morphology. We also comment on the limitations of our model and on future perspectives for improved diagnostics.

Funding ProjectNASA[81303] ; National Natural Science Foundation of China[11503078] ; National Natural Science Foundation of China[11661161010] ; National Natural Science Foundation of China[11673060] ; Centre National dEtudes Spatiales ; Agence Nationale de la Recherche(ANR-15-IDEX-02)
Funding OrganizationNASA[81303] ; National Natural Science Foundation of China[11503078, 11661161010, 11673060] ; Centre National dEtudes Spatiales ; Agence Nationale de la Recherche(ANR-15-IDEX-02)
Language英语
Subject Area天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000439959500003
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordAnnihilating Dark-matter ; Large-area Telescope ; Globular-clusters ; Milky-way ; Dynamical Formation ; Bulge ; M31 ; Stellar ; Population ; Nucleus
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/17388
Collection高能天体物理研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorEckner, Christopher; Hou X(侯贤); Serpico, Pasquale D.; Zaharijas, Gabrijela
Affiliation1.Laboratory for Astroparticle Physics, University of Nova Gorica, Vipavska 13, SI-5000 Nova Gorica, Slovenia
2.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, People's Republic of China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, People's Republic of China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People's Republic of China
5.LAPTh, Université Savoie Mont Blanc & CNRS, F-74941 Annecy Cedex, France
6.University of Wisconsin, Madison, 500 Lincoln Drive, Madison, WI 53706, USA
7.Istituto Nazionale di Fisica Nucleare—Sezione Trieste, Padriciano 99, I-34149 Trieste, Italy
8.Institut de Recherche en Astrophysique et Planétologie, CNRS-INSU, Université Paul Sabatier, 9 avenue Colonel Roche, BP 44346, F-31028 Toulouse Cedex 4, France
9.W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305, USA
10.CRESST/CSST/Department of Physics, UMBC, Baltimore, MD 21250, USA
11.NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
12.Department of Physics, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 4, 21000 Novi Sad, Serbia
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Eckner, Christopher,Hou X,Serpico, Pasquale D.,et al. Millisecond Pulsar Origin of the Galactic Center Excess and Extended Gamma-Ray Emission from Andromeda: A Closer Look[J]. ASTROPHYSICAL JOURNAL,2018,862(1).
APA Eckner, Christopher.,Hou X.,Serpico, Pasquale D..,Winter, Miles.,Zaharijas, Gabrijela.,...&Vandenbroucke, Justin.(2018).Millisecond Pulsar Origin of the Galactic Center Excess and Extended Gamma-Ray Emission from Andromeda: A Closer Look.ASTROPHYSICAL JOURNAL,862(1).
MLA Eckner, Christopher,et al."Millisecond Pulsar Origin of the Galactic Center Excess and Extended Gamma-Ray Emission from Andromeda: A Closer Look".ASTROPHYSICAL JOURNAL 862.1(2018).
Files in This Item:
File Name/Size DocType Version Access License
Millisecond Pulsar O(846KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Eckner, Christopher]'s Articles
[Hou X(侯贤)]'s Articles
[Serpico, Pasquale D.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Eckner, Christopher]'s Articles
[Hou X(侯贤)]'s Articles
[Serpico, Pasquale D.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Eckner, Christopher]'s Articles
[Hou X(侯贤)]'s Articles
[Serpico, Pasquale D.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Millisecond Pulsar Origin of the Galactic Center Excess and Extended Gamma-Ray Emission from Andromeda_ A Closer Look.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.