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Title: Search for Extended Sources in the Galactic Plane Using Six Years of Fermi-Large Area Telescope Pass 8 Data above 10 GeV

Abstract

The spatial extension of a γ-ray source is an essential ingredient to determine its spectral properties, as well as its potential multiwavelength counterpart. The capability to spatially resolve γ-ray sources is greatly improved by the newly delivered Fermi-Large Area Telescope (LAT) Pass 8 event-level analysis, which provides a greater acceptance and an improved point-spread function, two crucial factors for the detection of extended sources. Here, we present a complete search for extended sources located within 7° from the Galactic plane, using 6 yr of Fermi-LAT data above 10 GeV. We find 46 extended sources and provide their morphological and spectral characteristics. As a result, this constitutes the first catalog of hard Fermi-LAT extended sources, named the Fermi Galactic Extended Source Catalog, which allows a thorough study of the properties of the Galactic plane in the sub-TeV domain.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [9];  [11];  [12];  [13];  [1];  [9];  [14];  [15];  [11];  [16] more »;  [17];  [9];  [18];  [19];  [20];  [21];  [22];  [20];  [23];  [21];  [24];  [25];  [26];  [9];  [3];  [9];  [14];  [14];  [27];  [11];  [1];  [28];  [29];  [14];  [23];  [21];  [14];  [14];  [30];  [22];  [4];  [31];  [32];  [11];  [11];  [11];  [33];  [27];  [34];  [35];  [36];  [37];  [20];  [38];  [31];  [39];  [5];  [14];  [40];  [41];  [42];  [29];  [3];  [23];  [9];  [43];  [28];  [9];  [44];  [9];  [10];  [12];  [28];  [9];  [30];  [9];  [45];  [2];  [46];  [11];  [47];  [37];  [9];  [12];  [9];  [29];  [14];  [6];  [48];  [49];  [50];  [50];  [31];  [37];  [23];  [51];  [37];  [37];  [14];  [52];  [22];  [9];  [11];  [53];  [54];  [22];  [9];  [55];  [9] « less
  1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  2. Clemson Univ., Clemson, SC (United States)
  3. Univ. di Pisa and Istituto Nazionale di Fisica Nucleare, Pisa (Italy)
  4. Univ. Paris Diderot, Gif sur Yvette (France)
  5. Istituto Nazionale di Fisica Nucleare, Trieste (Italy); Univ. di Trieste, Trieste (Italy)
  6. Istituto Nazionale di Fisica Nucleare, Padova (Italy); Univ. di Padova, Padova (Italy)
  7. Istituto Nazionale de Fisica Nucleare, Pisa (Italy)
  8. Istituto Nazionale de Fisica Nucleare, Bari (Italy)
  9. Stanford Univ., Stanford, CA (United States)
  10. Istituto Nazionale di Fisica Nucleare, Torino (Italy); Univ. degli Studi di Torino, Torino (Italy)
  11. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  12. Univ. Montpellier, Montpellier (France)
  13. Ecole Polytechnique, Palaiseau (France)
  14. Istituto Nazionale di Fisica Nucleare, Bari (Italy); "M. Merlin" dell'Univ. e del Politecnico di Bari, Bari (Italy)
  15. INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica Milano, Milano (Italy)
  16. Agenzia Spaziale Italiana (ASI) Science Data Center, Roma (Italy)
  17. Istituto Nazionale di Fisica Nucleare, Perugia (Italy); Univ. degli Studi di Perugia, Perugia (Italy)
  18. George Mason Univ., Fairfax, VA (United States)
  19. Naval Research Lab., Washington, D.C. (United States)
  20. Univ. di Padova, Padova (Italy)
  21. Agenzia Spaziale Italiana (ASI) Science Data Center, Roma (Italy); Istituto Nazionale di Fisica Nucleare, Perugia (Italy)
  22. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of Maryland, College Park, MD (United States)
  23. Istituto Nazionale di Fisica Nucleare, Bari (Italy)
  24. INAF Istituto di Radioastronomia, Bologna (Italy); Univ. di Bologna, Bologna (Italy)
  25. Istituto Nazionale di Fisica Nucleare, Bari (Italy); Univ. Telematica Pegaso, Napoli (Italy)
  26. Istituto Nazionale di Fisica Nucleare, Torino (Italy); Univ. di Udine, Udine (Italy)
  27. Ecole polytechnique, Palaiseau (France)
  28. Hiroshima Univ., Hiroshima (Japan)
  29. Erlangen Centre for Astroparticle Physics, Erlangen (Germany)
  30. INAF Istituto di Radioastronomia, Bologna (Italy)
  31. Univ. Bordeaux, Gradignan Cedex (France)
  32. Univ. d'Orleans, Orleans Cedex (France); Observatoire de Paris, Nancay (France)
  33. Univ. of North Florida, Jacksonville, FL (United States)
  34. Chinese Academy of Sciences, Kunming (China); Chinese Academy of Sciences, Beijing (China)
  35. Univ. of Iceland, Reykjavik (Iceland); Nordita, Stockholm (Sweden)
  36. Univ. of Tokyo, Tokyo (Japan)
  37. Istituto Nazionale di Fisica Nucleare, Pisa (Italy)
  38. KTH Royal Institute of Technology, Stockholm (Sweden); The Oskar Klein Centre for Cosmoparticle Physics, Stockholm (Sweden)
  39. Institute of Space Sciences (IEEC-CSIC), Barcelona (Spain)
  40. Istituto Nazionale di Fisica Nucleare, Perugia (Italy)
  41. Univ. of Maryland, College Park, MD (United States)
  42. Istituto Nazionale di Fisica Nucleare, Torino (Italy)
  43. Mahidol Univ., Bangkok (Thailand)
  44. Istituto Nazionale di Fisica Nucleare, Roma (Italy)
  45. Univ. of Denver, Denver, CO (United States)
  46. Max-Planck-Institut fur Physik, Munchen (Germany)
  47. Istituto Nazionale di Fisica Nucleare, Trieste (Italy)
  48. Istituto Nazionale di Fisica Nucleare, Pisa (Italy);
  49. Univ. of Johannesburg, Auckland Park (South Africa)
  50. Leopold-Franzens-Univ. Innsbruck, Innsbruck (Austria); Stanford Univ., Stanford, CA (United States)
  51. NYCB Real-Time Computing Inc., Lattingtown, NY (United States)
  52. Purdue Univ. Calumet, Hammond, IN (United States)
  53. Institute of Space Sciences (IEEC-CSIC), Barcelona (Spain); Institucio Catalana de Recerca i Estudis Acancats (ICREA), Barcelona (Spain)
  54. Istituto Nazionale di Fisica Nucleare, Perugia (Italy); Univ. degli Studi di Perugia, Periugia (Italy)
  55. Praxis Inc., Alexandria, VA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1374391
Grant/Contract Number:
AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 843; Journal Issue: 2; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; catalogs; gamma rays: general

Citation Formats

Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., Bloom, E. D., Bonino, R., Bottacini, E., Brandt, T. J., Bregeon, J., Bruel, P., Buehler, R., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Castro, D., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C. C., Chiaro, G., Ciprini, S., Cohen, J. M., Costantin, D., Costanza, F., Cutini, S., D’Ammando, F., de Palma, F., Desiante, R., Digel, S. W., Lalla, N. Di, Mauro, M. Di, Venere, L. Di, Favuzzi, C., Fegan, S. J., Ferrara, E. C., Franckowiak, A., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giordano, F., Giroletti, M., Green, D., Grenier, I. A., Grondin, M. -H., Guillemot, L., Guiriec, S., Harding, A. K., Hays, Elizabeth A., Hewitt, J. W., Horan, D., Hou, X., Jóhannesson, G., Kamae, T., Kuss, M., La Mura, G., Larsson, S., Lemoine-Goumard, M., Li, J., Longo, F., Loparco, F., Lubrano, P., Magill, J. D., Maldera, S., Malyshev, D., Manfreda, A., Mazziotta, M. N., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Monzani, M. E., Morselli, A., Moskalenko, I. V., Negro, M., Nuss, E., Ohsugi, T., Omodei, N., Orienti, M., Orlando, E., Ormes, J. F., Paliya, V. S., Paneque, D., Perkins, J. S., Persic, M., Pesce-Rollins, M., Petrosian, V., Piron, F., Porter, T. A., Principe, G., Raino, S., Rando, R., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Reposeur, T., Sgro, C., Simone, D., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Suson, D. J., Tak, D., Thayer, J. B., Thompson, D. J., Torres, D. F., Tosti, G., Troja, E., Vianello, G., Wood, K. S., and Wood, M. Search for Extended Sources in the Galactic Plane Using Six Years of Fermi-Large Area Telescope Pass 8 Data above 10 GeV. United States: N. p., 2017. Web. doi:10.3847/1538-4357/aa775a.
Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., Bloom, E. D., Bonino, R., Bottacini, E., Brandt, T. J., Bregeon, J., Bruel, P., Buehler, R., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Castro, D., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C. C., Chiaro, G., Ciprini, S., Cohen, J. M., Costantin, D., Costanza, F., Cutini, S., D’Ammando, F., de Palma, F., Desiante, R., Digel, S. W., Lalla, N. Di, Mauro, M. Di, Venere, L. Di, Favuzzi, C., Fegan, S. J., Ferrara, E. C., Franckowiak, A., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giordano, F., Giroletti, M., Green, D., Grenier, I. A., Grondin, M. -H., Guillemot, L., Guiriec, S., Harding, A. K., Hays, Elizabeth A., Hewitt, J. W., Horan, D., Hou, X., Jóhannesson, G., Kamae, T., Kuss, M., La Mura, G., Larsson, S., Lemoine-Goumard, M., Li, J., Longo, F., Loparco, F., Lubrano, P., Magill, J. D., Maldera, S., Malyshev, D., Manfreda, A., Mazziotta, M. N., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Monzani, M. E., Morselli, A., Moskalenko, I. V., Negro, M., Nuss, E., Ohsugi, T., Omodei, N., Orienti, M., Orlando, E., Ormes, J. F., Paliya, V. S., Paneque, D., Perkins, J. S., Persic, M., Pesce-Rollins, M., Petrosian, V., Piron, F., Porter, T. A., Principe, G., Raino, S., Rando, R., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Reposeur, T., Sgro, C., Simone, D., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Suson, D. J., Tak, D., Thayer, J. B., Thompson, D. J., Torres, D. F., Tosti, G., Troja, E., Vianello, G., Wood, K. S., & Wood, M. Search for Extended Sources in the Galactic Plane Using Six Years of Fermi-Large Area Telescope Pass 8 Data above 10 GeV. United States. doi:10.3847/1538-4357/aa775a.
Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., Bloom, E. D., Bonino, R., Bottacini, E., Brandt, T. J., Bregeon, J., Bruel, P., Buehler, R., Cameron, R. A., Caragiulo, M., Caraveo, P. A., Castro, D., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C. C., Chiaro, G., Ciprini, S., Cohen, J. M., Costantin, D., Costanza, F., Cutini, S., D’Ammando, F., de Palma, F., Desiante, R., Digel, S. W., Lalla, N. Di, Mauro, M. Di, Venere, L. Di, Favuzzi, C., Fegan, S. J., Ferrara, E. C., Franckowiak, A., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giordano, F., Giroletti, M., Green, D., Grenier, I. A., Grondin, M. -H., Guillemot, L., Guiriec, S., Harding, A. K., Hays, Elizabeth A., Hewitt, J. W., Horan, D., Hou, X., Jóhannesson, G., Kamae, T., Kuss, M., La Mura, G., Larsson, S., Lemoine-Goumard, M., Li, J., Longo, F., Loparco, F., Lubrano, P., Magill, J. D., Maldera, S., Malyshev, D., Manfreda, A., Mazziotta, M. N., Michelson, P. F., Mitthumsiri, W., Mizuno, T., Monzani, M. E., Morselli, A., Moskalenko, I. V., Negro, M., Nuss, E., Ohsugi, T., Omodei, N., Orienti, M., Orlando, E., Ormes, J. F., Paliya, V. S., Paneque, D., Perkins, J. S., Persic, M., Pesce-Rollins, M., Petrosian, V., Piron, F., Porter, T. A., Principe, G., Raino, S., Rando, R., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Reposeur, T., Sgro, C., Simone, D., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Suson, D. J., Tak, D., Thayer, J. B., Thompson, D. J., Torres, D. F., Tosti, G., Troja, E., Vianello, G., Wood, K. S., and Wood, M. Mon . "Search for Extended Sources in the Galactic Plane Using Six Years of Fermi-Large Area Telescope Pass 8 Data above 10 GeV". United States. doi:10.3847/1538-4357/aa775a.
@article{osti_1374391,
title = {Search for Extended Sources in the Galactic Plane Using Six Years of Fermi-Large Area Telescope Pass 8 Data above 10 GeV},
author = {Ackermann, M. and Ajello, M. and Baldini, L. and Ballet, J. and Barbiellini, G. and Bastieri, D. and Bellazzini, R. and Bissaldi, E. and Bloom, E. D. and Bonino, R. and Bottacini, E. and Brandt, T. J. and Bregeon, J. and Bruel, P. and Buehler, R. and Cameron, R. A. and Caragiulo, M. and Caraveo, P. A. and Castro, D. and Cavazzuti, E. and Cecchi, C. and Charles, E. and Chekhtman, A. and Cheung, C. C. and Chiaro, G. and Ciprini, S. and Cohen, J. M. and Costantin, D. and Costanza, F. and Cutini, S. and D’Ammando, F. and de Palma, F. and Desiante, R. and Digel, S. W. and Lalla, N. Di and Mauro, M. Di and Venere, L. Di and Favuzzi, C. and Fegan, S. J. and Ferrara, E. C. and Franckowiak, A. and Fukazawa, Y. and Funk, S. and Fusco, P. and Gargano, F. and Gasparrini, D. and Giglietto, N. and Giordano, F. and Giroletti, M. and Green, D. and Grenier, I. A. and Grondin, M. -H. and Guillemot, L. and Guiriec, S. and Harding, A. K. and Hays, Elizabeth A. and Hewitt, J. W. and Horan, D. and Hou, X. and Jóhannesson, G. and Kamae, T. and Kuss, M. and La Mura, G. and Larsson, S. and Lemoine-Goumard, M. and Li, J. and Longo, F. and Loparco, F. and Lubrano, P. and Magill, J. D. and Maldera, S. and Malyshev, D. and Manfreda, A. and Mazziotta, M. N. and Michelson, P. F. and Mitthumsiri, W. and Mizuno, T. and Monzani, M. E. and Morselli, A. and Moskalenko, I. V. and Negro, M. and Nuss, E. and Ohsugi, T. and Omodei, N. and Orienti, M. and Orlando, E. and Ormes, J. F. and Paliya, V. S. and Paneque, D. and Perkins, J. S. and Persic, M. and Pesce-Rollins, M. and Petrosian, V. and Piron, F. and Porter, T. A. and Principe, G. and Raino, S. and Rando, R. and Razzano, M. and Razzaque, S. and Reimer, A. and Reimer, O. and Reposeur, T. and Sgro, C. and Simone, D. and Siskind, E. J. and Spada, F. and Spandre, G. and Spinelli, P. and Suson, D. J. and Tak, D. and Thayer, J. B. and Thompson, D. J. and Torres, D. F. and Tosti, G. and Troja, E. and Vianello, G. and Wood, K. S. and Wood, M.},
abstractNote = {The spatial extension of a γ-ray source is an essential ingredient to determine its spectral properties, as well as its potential multiwavelength counterpart. The capability to spatially resolve γ-ray sources is greatly improved by the newly delivered Fermi-Large Area Telescope (LAT) Pass 8 event-level analysis, which provides a greater acceptance and an improved point-spread function, two crucial factors for the detection of extended sources. Here, we present a complete search for extended sources located within 7° from the Galactic plane, using 6 yr of Fermi-LAT data above 10 GeV. We find 46 extended sources and provide their morphological and spectral characteristics. As a result, this constitutes the first catalog of hard Fermi-LAT extended sources, named the Fermi Galactic Extended Source Catalog, which allows a thorough study of the properties of the Galactic plane in the sub-TeV domain.},
doi = {10.3847/1538-4357/aa775a},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 843,
place = {United States},
year = {Mon Jul 10 00:00:00 EDT 2017},
month = {Mon Jul 10 00:00:00 EDT 2017}
}

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  • The spatial extension of a γ -ray source is an essential ingredient to determine its spectral properties, as well as its potential multiwavelength counterpart. The capability to spatially resolve γ -ray sources is greatly improved by the newly delivered Fermi -Large Area Telescope (LAT) Pass 8 event-level analysis, which provides a greater acceptance and an improved point-spread function, two crucial factors for the detection of extended sources. Here, we present a complete search for extended sources located within 7° from the Galactic plane, using 6 yr of Fermi -LAT data above 10 GeV. We find 46 extended sources and providemore » their morphological and spectral characteristics. This constitutes the first catalog of hard Fermi -LAT extended sources, named the Fermi Galactic Extended Source Catalog, which allows a thorough study of the properties of the Galactic plane in the sub-TeV domain.« less
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