Observations of the Sagittarius dwarf galaxy by the HESS experiment and search for a dark matter signal

F. Aharonian; A. G. Akhperjanian; A. R. Bazer-Bachi; M. Beilicke; W. Benbow; D. Berge; K. Bernlöhr; C. Boisson; O. Bolz; V. Borrel; I. Braun; E. Brion; A. M. Brown; R. Bühler; I. Büsching; T. Boutelier; S. Carrigan; P. M. Chadwick; L. M. Chounet; G. Coignet; R. Cornils; L. Costamante; B. Degrange; H. J. Dickinson; A. Djannati-Ataï; L. O.C. Drury; G. Dubus; K. Egberts; D. Emmanoulopoulos; P. Espigat; C. Farnier; F. Feinstein; E. Ferrero; A. Fiasson; G. Fontaine; Seb Funk; S. Funk; M. Füßling; Y. A. Gallant; B. Giebels; J. F. Glicenstein; B. Glück; P. Goret; C. Hadjichristidis; D. Hauser; M. Hauser; G. Heinzelmann; G. Henri; G. Hermann; J. A. Hinton; A. Hoffmann; W. Hofmann; M. Holleran; S. Hoppe; D. Horns; A. Jacholkowska; O. C. de Jager; E. Kendziorra; M. Kerschhaggl; B. Khélifi; Nu Komin; K. Kosack; G. Lamanna; I. J. Latham; R. Le Gallou; A. Lemière; M. Lemoine-Goumard; T. Lohse; J. M. Martin; O. Martineau-Huynh; A. Marcowith; C. Masterson; G. Maurin; T. J.L. McComb; E. Moulin; M. de Naurois; D. Nedbal; S. J. Nolan; A. Noutsos; E. Nuss; J. P. Olive; K. J. Orford; J. L. Osborne; M. Panter; G. Pelletier; P. O. Petrucci; S. Pita; G. Pühlhofer; M. Punch; S. Ranchon; B. C. Raubenheimer; M. Raue; S. M. Rayner; J. Ripken; L. Rob; L. Rolland; S. Rosier-Lees; G. Rowell; V. Sahakian; A. Santangelo; L. Saugé; S. Schlenker; R. Schlickeiser; R. Schröder; U. Schwanke; S. Schwarzburg; S. Schwemmer; A. Shalchi; H. Sol; D. Spangler; F. Spanier; R. Steenkamp; C. Stegmann; G. Superina; P. H. Tam; J. P. Tavernet; R. Terrier; M. Tluczykont; C. van Eldik; G. Vasileiadis; C. Venter; J. P. Vialle; P. Vincent; M. Vivier; H. J. Völk; S. J. Wagner; M. Ward

doi:10.1016/j.astropartphys.2007.11.007

Observations of the Sagittarius dwarf galaxy by the HESS experiment and search for a dark matter signal

F. Aharonian, A. G. Akhperjanian, A. R. Bazer-Bachi, M. Beilicke, W. Benbow, D. Berge, K. Bernlöhr, C. Boisson, O. Bolz, V. Borrel, I. Braun, E. Brion, A. M. Brown, R. Bühler, I. Büsching, T. Boutelier, S. Carrigan, P. M. Chadwick, L. M. Chounet, G. CoignetR. Cornils, L. Costamante, B. Degrange, H. J. Dickinson, A. Djannati-Ataï, L. O.C. Drury, G. Dubus, K. Egberts, D. Emmanoulopoulos, P. Espigat, C. Farnier, F. Feinstein, E. Ferrero, A. Fiasson, G. Fontaine, Seb Funk, S. Funk, M. Füßling, Y. A. Gallant, B. Giebels, J. F. Glicenstein, B. Glück, P. Goret, C. Hadjichristidis, D. Hauser, M. Hauser, G. Heinzelmann, G. Henri, G. Hermann, J. A. Hinton, A. Hoffmann, W. Hofmann, M. Holleran, S. Hoppe, D. Horns, A. Jacholkowska, O. C. de Jager, E. Kendziorra, M. Kerschhaggl, B. Khélifi, Nu Komin, K. Kosack, G. Lamanna, I. J. Latham, R. Le Gallou, A. Lemière, M. Lemoine-Goumard, T. Lohse, J. M. Martin, O. Martineau-Huynh, A. Marcowith, C. Masterson, G. Maurin, T. J.L. McComb, E. Moulin^*, M. de Naurois, D. Nedbal, S. J. Nolan, A. Noutsos, E. Nuss, J. P. Olive, K. J. Orford, J. L. Osborne, M. Panter, G. Pelletier, P. O. Petrucci, S. Pita, G. Pühlhofer, M. Punch, S. Ranchon, B. C. Raubenheimer, M. Raue, S. M. Rayner, J. Ripken, L. Rob, L. Rolland, S. Rosier-Lees, G. Rowell, V. Sahakian, A. Santangelo, L. Saugé, S. Schlenker, R. Schlickeiser, R. Schröder, U. Schwanke, S. Schwarzburg, S. Schwemmer, A. Shalchi, H. Sol, D. Spangler, F. Spanier, R. Steenkamp, C. Stegmann, G. Superina, P. H. Tam, J. P. Tavernet, R. Terrier, M. Tluczykont, C. van Eldik, G. Vasileiadis, C. Venter, J. P. Vialle, P. Vincent, M. Vivier, H. J. Völk, S. J. Wagner, M. Ward

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

115 Scopus citations

Abstract

Observations of the Sagittarius dwarf spheroidal (Sgr dSph) galaxy were carried out with the HESS array of four imaging air Cherenkov telescopes in June 2006. A total of 11 h of high quality data are available after data selection. There is no evidence for a very high energy γ-ray signal above the energy threshold at the target position. A 95% CL flux limit of 3.6 × 10^{- 12} cm^{- 2} s^{- 1} above 250 GeV has been derived. Constraints on the velocity-weighted cross-section 〈 σ v 〉 are calculated in the framework of dark matter particle annihilation using realistic models for the dark matter halo profile of Sagittarius dwarf galaxy. Two different models have been investigated encompassing a large class of halo types. A 95% CL exclusion limit on 〈 σ v 〉 of the order of 2 × 10^{- 25} cm³ s^{- 1} is obtained for a core profile in the 100 GeV-1 TeV neutralino mass range.

Original language	English (US)
Pages (from-to)	55-62
Number of pages	8
Journal	Astroparticle Physics
Volume	29
Issue number	1
DOIs	https://doi.org/10.1016/j.astropartphys.2007.11.007
State	Published - Feb 2008
Externally published	Yes

Bibliographical note

Funding Information:
The support of the Namibian authorities and of the University of Namibia in facilitating the construction and operation of HESS is gratefully acknowledged, as is the support by the German Ministry for Education and Research (BMBF), the Max Planck Society, the French Ministry for Research, the CNRS-IN2P3 and the Astroparticle Interdisciplinary Programme of the CNRS, the UK Particle Physics and Astronomy Research Council (PPARC), the IPNP of the Charles University, the South African Department of Science and Technology and National Research Foundation, and by the University of Namibia. We appreciate the excellent work of the technical support staff in Berlin, Durham, Hamburg, Heildelberg, Palaiseau, Paris, Saclay, and in Namibia in the construction and operation of the equipment. We thank Edmond Giraud for suggestions and discussions concerning the Sagittarius dwarf Galaxy observations by HESS.

Keywords

Dark matter
Dwarf spheroidal galaxy
Gamma-rays: observations

ASJC Scopus subject areas

Astronomy and Astrophysics

Access to Document

10.1016/j.astropartphys.2007.11.007

Cite this

Aharonian, F., Akhperjanian, A. G., Bazer-Bachi, A. R., Beilicke, M., Benbow, W., Berge, D., Bernlöhr, K., Boisson, C., Bolz, O., Borrel, V., Braun, I., Brion, E., Brown, A. M., Bühler, R., Büsching, I., Boutelier, T., Carrigan, S., Chadwick, P. M., Chounet, L. M., ... Ward, M. (2008). Observations of the Sagittarius dwarf galaxy by the HESS experiment and search for a dark matter signal. Astroparticle Physics, 29(1), 55-62. https://doi.org/10.1016/j.astropartphys.2007.11.007

@article{4746bd77da1e4ea2a75862f5c227fccc,

title = "Observations of the Sagittarius dwarf galaxy by the HESS experiment and search for a dark matter signal",

abstract = "Observations of the Sagittarius dwarf spheroidal (Sgr dSph) galaxy were carried out with the HESS array of four imaging air Cherenkov telescopes in June 2006. A total of 11 h of high quality data are available after data selection. There is no evidence for a very high energy γ-ray signal above the energy threshold at the target position. A 95% CL flux limit of 3.6 × 10- 12 cm- 2 s- 1 above 250 GeV has been derived. Constraints on the velocity-weighted cross-section 〈 σ v 〉 are calculated in the framework of dark matter particle annihilation using realistic models for the dark matter halo profile of Sagittarius dwarf galaxy. Two different models have been investigated encompassing a large class of halo types. A 95% CL exclusion limit on 〈 σ v 〉 of the order of 2 × 10- 25 cm3 s- 1 is obtained for a core profile in the 100 GeV-1 TeV neutralino mass range.",

keywords = "Dark matter, Dwarf spheroidal galaxy, Gamma-rays: observations",

author = "F. Aharonian and Akhperjanian, {A. G.} and Bazer-Bachi, {A. R.} and M. Beilicke and W. Benbow and D. Berge and K. Bernl{\"o}hr and C. Boisson and O. Bolz and V. Borrel and I. Braun and E. Brion and Brown, {A. M.} and R. B{\"u}hler and I. B{\"u}sching and T. Boutelier and S. Carrigan and Chadwick, {P. M.} and Chounet, {L. M.} and G. Coignet and R. Cornils and L. Costamante and B. Degrange and Dickinson, {H. J.} and A. Djannati-Ata{\"i} and Drury, {L. O.C.} and G. Dubus and K. Egberts and D. Emmanoulopoulos and P. Espigat and C. Farnier and F. Feinstein and E. Ferrero and A. Fiasson and G. Fontaine and Seb Funk and S. Funk and M. F{\"u}{\ss}ling and Gallant, {Y. A.} and B. Giebels and Glicenstein, {J. F.} and B. Gl{\"u}ck and P. Goret and C. Hadjichristidis and D. Hauser and M. Hauser and G. Heinzelmann and G. Henri and G. Hermann and Hinton, {J. A.} and A. Hoffmann and W. Hofmann and M. Holleran and S. Hoppe and D. Horns and A. Jacholkowska and {de Jager}, {O. C.} and E. Kendziorra and M. Kerschhaggl and B. Kh{\'e}lifi and Nu Komin and K. Kosack and G. Lamanna and Latham, {I. J.} and {Le Gallou}, R. and A. Lemi{\`e}re and M. Lemoine-Goumard and T. Lohse and Martin, {J. M.} and O. Martineau-Huynh and A. Marcowith and C. Masterson and G. Maurin and McComb, {T. J.L.} and E. Moulin and {de Naurois}, M. and D. Nedbal and Nolan, {S. J.} and A. Noutsos and E. Nuss and Olive, {J. P.} and Orford, {K. J.} and Osborne, {J. L.} and M. Panter and G. Pelletier and Petrucci, {P. O.} and S. Pita and G. P{\"u}hlhofer and M. Punch and S. Ranchon and Raubenheimer, {B. C.} and M. Raue and Rayner, {S. M.} and J. Ripken and L. Rob and L. Rolland and S. Rosier-Lees and G. Rowell and V. Sahakian and A. Santangelo and L. Saug{\'e} and S. Schlenker and R. Schlickeiser and R. Schr{\"o}der and U. Schwanke and S. Schwarzburg and S. Schwemmer and A. Shalchi and H. Sol and D. Spangler and F. Spanier and R. Steenkamp and C. Stegmann and G. Superina and Tam, {P. H.} and Tavernet, {J. P.} and R. Terrier and M. Tluczykont and {van Eldik}, C. and G. Vasileiadis and C. Venter and Vialle, {J. P.} and P. Vincent and M. Vivier and V{\"o}lk, {H. J.} and Wagner, {S. J.} and M. Ward",

note = "Funding Information: The support of the Namibian authorities and of the University of Namibia in facilitating the construction and operation of HESS is gratefully acknowledged, as is the support by the German Ministry for Education and Research (BMBF), the Max Planck Society, the French Ministry for Research, the CNRS-IN2P3 and the Astroparticle Interdisciplinary Programme of the CNRS, the UK Particle Physics and Astronomy Research Council (PPARC), the IPNP of the Charles University, the South African Department of Science and Technology and National Research Foundation, and by the University of Namibia. We appreciate the excellent work of the technical support staff in Berlin, Durham, Hamburg, Heildelberg, Palaiseau, Paris, Saclay, and in Namibia in the construction and operation of the equipment. We thank Edmond Giraud for suggestions and discussions concerning the Sagittarius dwarf Galaxy observations by HESS.",

year = "2008",

month = feb,

doi = "10.1016/j.astropartphys.2007.11.007",

language = "English (US)",

volume = "29",

pages = "55--62",

journal = "Astroparticle Physics",

issn = "0927-6505",

publisher = "Elsevier B.V.",

number = "1",

}

Aharonian, F, Akhperjanian, AG, Bazer-Bachi, AR, Beilicke, M, Benbow, W, Berge, D, Bernlöhr, K, Boisson, C, Bolz, O, Borrel, V, Braun, I, Brion, E, Brown, AM, Bühler, R, Büsching, I, Boutelier, T, Carrigan, S, Chadwick, PM, Chounet, LM, Coignet, G, Cornils, R, Costamante, L, Degrange, B, Dickinson, HJ, Djannati-Ataï, A, Drury, LOC, Dubus, G, Egberts, K, Emmanoulopoulos, D, Espigat, P, Farnier, C, Feinstein, F, Ferrero, E, Fiasson, A, Fontaine, G, Funk, S, Funk, S, Füßling, M, Gallant, YA, Giebels, B, Glicenstein, JF, Glück, B, Goret, P, Hadjichristidis, C, Hauser, D, Hauser, M, Heinzelmann, G, Henri, G, Hermann, G, Hinton, JA, Hoffmann, A, Hofmann, W, Holleran, M, Hoppe, S, Horns, D, Jacholkowska, A, de Jager, OC, Kendziorra, E, Kerschhaggl, M, Khélifi, B, Komin, N, Kosack, K, Lamanna, G, Latham, IJ, Le Gallou, R, Lemière, A, Lemoine-Goumard, M, Lohse, T, Martin, JM, Martineau-Huynh, O, Marcowith, A, Masterson, C, Maurin, G, McComb, TJL, Moulin, E, de Naurois, M, Nedbal, D, Nolan, SJ, Noutsos, A, Nuss, E, Olive, JP, Orford, KJ, Osborne, JL, Panter, M, Pelletier, G, Petrucci, PO, Pita, S, Pühlhofer, G, Punch, M, Ranchon, S, Raubenheimer, BC, Raue, M, Rayner, SM, Ripken, J, Rob, L, Rolland, L, Rosier-Lees, S, Rowell, G, Sahakian, V, Santangelo, A, Saugé, L, Schlenker, S, Schlickeiser, R, Schröder, R, Schwanke, U, Schwarzburg, S, Schwemmer, S, Shalchi, A, Sol, H, Spangler, D, Spanier, F, Steenkamp, R, Stegmann, C, Superina, G, Tam, PH, Tavernet, JP, Terrier, R, Tluczykont, M, van Eldik, C, Vasileiadis, G, Venter, C, Vialle, JP, Vincent, P, Vivier, M, Völk, HJ, Wagner, SJ & Ward, M 2008, 'Observations of the Sagittarius dwarf galaxy by the HESS experiment and search for a dark matter signal', Astroparticle Physics, vol. 29, no. 1, pp. 55-62. https://doi.org/10.1016/j.astropartphys.2007.11.007

TY - JOUR

T1 - Observations of the Sagittarius dwarf galaxy by the HESS experiment and search for a dark matter signal

AU - Aharonian, F.

AU - Akhperjanian, A. G.

AU - Bazer-Bachi, A. R.

AU - Beilicke, M.

AU - Benbow, W.

AU - Berge, D.

AU - Bernlöhr, K.

AU - Boisson, C.

AU - Bolz, O.

AU - Borrel, V.

AU - Braun, I.

AU - Brion, E.

AU - Brown, A. M.

AU - Bühler, R.

AU - Büsching, I.

AU - Boutelier, T.

AU - Carrigan, S.

AU - Chadwick, P. M.

AU - Chounet, L. M.

AU - Coignet, G.

AU - Cornils, R.

AU - Costamante, L.

AU - Degrange, B.

AU - Dickinson, H. J.

AU - Djannati-Ataï, A.

AU - Drury, L. O.C.

AU - Dubus, G.

AU - Egberts, K.

AU - Emmanoulopoulos, D.

AU - Espigat, P.

AU - Farnier, C.

AU - Feinstein, F.

AU - Ferrero, E.

AU - Fiasson, A.

AU - Fontaine, G.

AU - Funk, Seb

AU - Funk, S.

AU - Füßling, M.

AU - Gallant, Y. A.

AU - Giebels, B.

AU - Glicenstein, J. F.

AU - Glück, B.

AU - Goret, P.

AU - Hadjichristidis, C.

AU - Hauser, D.

AU - Hauser, M.

AU - Heinzelmann, G.

AU - Henri, G.

AU - Hermann, G.

AU - Hinton, J. A.

AU - Hoffmann, A.

AU - Hofmann, W.

AU - Holleran, M.

AU - Hoppe, S.

AU - Horns, D.

AU - Jacholkowska, A.

AU - de Jager, O. C.

AU - Kendziorra, E.

AU - Kerschhaggl, M.

AU - Khélifi, B.

AU - Komin, Nu

AU - Kosack, K.

AU - Lamanna, G.

AU - Latham, I. J.

AU - Le Gallou, R.

AU - Lemière, A.

AU - Lemoine-Goumard, M.

AU - Lohse, T.

AU - Martin, J. M.

AU - Martineau-Huynh, O.

AU - Marcowith, A.

AU - Masterson, C.

AU - Maurin, G.

AU - McComb, T. J.L.

AU - Moulin, E.

AU - de Naurois, M.

AU - Nedbal, D.

AU - Nolan, S. J.

AU - Noutsos, A.

AU - Nuss, E.

AU - Olive, J. P.

AU - Orford, K. J.

AU - Osborne, J. L.

AU - Panter, M.

AU - Pelletier, G.

AU - Petrucci, P. O.

AU - Pita, S.

AU - Pühlhofer, G.

AU - Punch, M.

AU - Ranchon, S.

AU - Raubenheimer, B. C.

AU - Raue, M.

AU - Rayner, S. M.

AU - Ripken, J.

AU - Rob, L.

AU - Rolland, L.

AU - Rosier-Lees, S.

AU - Rowell, G.

AU - Sahakian, V.

AU - Santangelo, A.

AU - Saugé, L.

AU - Schlenker, S.

AU - Schlickeiser, R.

AU - Schröder, R.

AU - Schwanke, U.

AU - Schwarzburg, S.

AU - Schwemmer, S.

AU - Shalchi, A.

AU - Sol, H.

AU - Spangler, D.

AU - Spanier, F.

AU - Steenkamp, R.

AU - Stegmann, C.

AU - Superina, G.

AU - Tam, P. H.

AU - Tavernet, J. P.

AU - Terrier, R.

AU - Tluczykont, M.

AU - van Eldik, C.

AU - Vasileiadis, G.

AU - Venter, C.

AU - Vialle, J. P.

AU - Vincent, P.

AU - Vivier, M.

AU - Völk, H. J.

AU - Wagner, S. J.

AU - Ward, M.

N1 - Funding Information: The support of the Namibian authorities and of the University of Namibia in facilitating the construction and operation of HESS is gratefully acknowledged, as is the support by the German Ministry for Education and Research (BMBF), the Max Planck Society, the French Ministry for Research, the CNRS-IN2P3 and the Astroparticle Interdisciplinary Programme of the CNRS, the UK Particle Physics and Astronomy Research Council (PPARC), the IPNP of the Charles University, the South African Department of Science and Technology and National Research Foundation, and by the University of Namibia. We appreciate the excellent work of the technical support staff in Berlin, Durham, Hamburg, Heildelberg, Palaiseau, Paris, Saclay, and in Namibia in the construction and operation of the equipment. We thank Edmond Giraud for suggestions and discussions concerning the Sagittarius dwarf Galaxy observations by HESS.

PY - 2008/2

Y1 - 2008/2

N2 - Observations of the Sagittarius dwarf spheroidal (Sgr dSph) galaxy were carried out with the HESS array of four imaging air Cherenkov telescopes in June 2006. A total of 11 h of high quality data are available after data selection. There is no evidence for a very high energy γ-ray signal above the energy threshold at the target position. A 95% CL flux limit of 3.6 × 10- 12 cm- 2 s- 1 above 250 GeV has been derived. Constraints on the velocity-weighted cross-section 〈 σ v 〉 are calculated in the framework of dark matter particle annihilation using realistic models for the dark matter halo profile of Sagittarius dwarf galaxy. Two different models have been investigated encompassing a large class of halo types. A 95% CL exclusion limit on 〈 σ v 〉 of the order of 2 × 10- 25 cm3 s- 1 is obtained for a core profile in the 100 GeV-1 TeV neutralino mass range.

AB - Observations of the Sagittarius dwarf spheroidal (Sgr dSph) galaxy were carried out with the HESS array of four imaging air Cherenkov telescopes in June 2006. A total of 11 h of high quality data are available after data selection. There is no evidence for a very high energy γ-ray signal above the energy threshold at the target position. A 95% CL flux limit of 3.6 × 10- 12 cm- 2 s- 1 above 250 GeV has been derived. Constraints on the velocity-weighted cross-section 〈 σ v 〉 are calculated in the framework of dark matter particle annihilation using realistic models for the dark matter halo profile of Sagittarius dwarf galaxy. Two different models have been investigated encompassing a large class of halo types. A 95% CL exclusion limit on 〈 σ v 〉 of the order of 2 × 10- 25 cm3 s- 1 is obtained for a core profile in the 100 GeV-1 TeV neutralino mass range.

KW - Dark matter

KW - Dwarf spheroidal galaxy

KW - Gamma-rays: observations

UR - http://www.scopus.com/inward/record.url?scp=38649128791&partnerID=8YFLogxK

U2 - 10.1016/j.astropartphys.2007.11.007

DO - 10.1016/j.astropartphys.2007.11.007

M3 - Article

AN - SCOPUS:38649128791

SN - 0927-6505

VL - 29

SP - 55

EP - 62

JO - Astroparticle Physics

JF - Astroparticle Physics

IS - 1

ER -

Observations of the Sagittarius dwarf galaxy by the HESS experiment and search for a dark matter signal

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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