Minimum Spanning Tree cluster analysis of the LMC region above 10 GeV: detection of the SNRs N 49B and N 63A

Abstract

We present the results of a cluster search in the \(\gamma \)-ray sky images of the Large Magellanic Cloud region by means of the Minimum Spanning Tree algorithm at energies higher than 10 GeV, using 9 years of Fermi-LAT data. Several significant clusters were found, the majority of which associated with previously known \(\gamma \)-ray sources. New significant clusters associated with the supernova remnants N 49B and N 63A are also found, and confirmed with a Maximum Likelihood analysis of the Fermi-LAT data.

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Notes

  1. 1.

    Throughout this paper the simplifying convention to write for instance \(\varLambda _{\mathrm{cut}} = 0.7\) instead of \(\varLambda _{\mathrm{cut}} = 0.7 \varLambda _{m}\) will be used.

  2. 2.

    http://fermi.gsfc.nasa.gov/ssc/data/access/.

  3. 3.

    https://fermi.gsfc.nasa.gov/ssc/data/access/lat/fl8y/. Note that this catalog by no means official and will be soon superseded by the future 4FGL catalog.

  4. 4.

    Template available at https://fermi.gsfc.nasa.gov/ssc/data/access/lat/4yr_catalog/LAT_extended_sources_v15.tgz.

  5. 5.

    Templates available at https://fermi.gsfc.nasa.gov/ssc/data/access/lat/3FHL/LAT_extended_sources_v18.tgz.

References

  1. Acero, F., Ackermann, M., Ajello, M., Albert, A., Atwood, W.B., Axelsson, M., Baldini, L., Ballet, J., et al.: Astrophys. J. Suppl. Ser. 218, 23 (2015)

    ADS  Article  Google Scholar 

  2. Ackermann, M., Ajello, M., Albert, A., Allafort, A., Atwood, W.B., Axelsson, M., Baldini, L., Ballet, J., et al.: Astrophys. J. Suppl. Ser. 203, 4 (2012)

    ADS  Article  Google Scholar 

  3. Ackermann, M., Ajello, M., Allafort, A., Asano, K., Atwood, W.B., Baldini, L., Ballet, J., Barbiellini, G., et al.: Astrophys. J. 765, 54 (2013)

    ADS  Article  Google Scholar 

  4. Ackermann, M., Albert, A., Atwood, W.B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., et al.: Astron. Astrophys. 586, 71 (2016)

    Article  Google Scholar 

  5. Atwood, W., Albert, A., Baldini, L., Tinivella, M., Bregeon, J., Pesce-Rollins, M., Sgrò, C., Bruel, P., Charles, E., Drlica-Wagner, A., Franckowiak, A., Jogler, T., Rochester, L., Usher, T., Wood, M., Cohen-Tanugi, J., S. Zimmer for the Fermi-LAT Collaboration: ArXiv e-prints (2013). 1303.3514

  6. Bernieri, E., Campana, R., Massaro, E., Paggi, A., Tramacere, A.: Astron. Astrophys. 551, 5 (2013)

    ADS  Article  Google Scholar 

  7. Bozzetto, L.M., Filipović, M.D., Vukotić, B., Pavlović, M.Z., Urošević, D., Kavanagh, P.J., Arbutina, B., Maggi, P., Sasaki, M., Haberl, F., Crawford, E.J., Roper, Q., Grieve, K., Points, S.D.: Astrophys. J. Suppl. Ser. 230, 2 (2017)

    ADS  Article  Google Scholar 

  8. Campana, R., Massaro, E., Bernieri, E.: Astrophys. Space Sci. 361, 367 (2016a)

    ADS  Article  Google Scholar 

  9. Campana, R., Massaro, E., Bernieri, E.: Astrophys. Space Sci. 361, 185 (2016b)

    ADS  Article  Google Scholar 

  10. Campana, R., Massaro, E., Bernieri, E.: Astrophys. Space Sci. 361, 183 (2016c)

    ADS  Article  Google Scholar 

  11. Campana, R., Massaro, E., Gasparrini, D., Cutini, S., Tramacere, A.: Mon. Not. R. Astron. Soc. 383, 1166 (2008)

    ADS  Article  Google Scholar 

  12. Campana, R., Bernieri, E., Massaro, E., Tinebra, F., Tosti, G.: Astrophys. Space Sci. 347, 169 (2013)

    ADS  Article  Google Scholar 

  13. Campana, R., Massaro, E., Bernieri, E., D’Amato, Q.: Astrophys. Space Sci. 360, 19 (2015)

    Article  Google Scholar 

  14. Campana, R., Maselli, A., Bernieri, E., Massaro, E.: Mon. Not. R. Astron. Soc. 465, 2784 (2017)

    ADS  Article  Google Scholar 

  15. Corbet, R.H.D., Chomiuk, L., Coe, M.J., Coley, J.B., Dubus, G., Edwards, P.G., Martin, P., McBride, V.A., Stevens, J., Strader, J., Townsend, L.J., Udalski, A.: Astrophys. J. 829, 105 (2016)

    ADS  Article  Google Scholar 

  16. Cusumano, G., Maccarone, M.C., Mineo, T., Sacco, B., Massaro, E., Bandiera, R., Salvati, M.: Astron. Astrophys. 333, 55 (1998)

    ADS  Google Scholar 

  17. D’Abrusco, R., Massaro, F., Paggi, A., Masetti, N., Tosti, G., Giroletti, M., Smith, H.A.: Astrophys. J. Suppl. Ser. 206, 12 (2013)

    ADS  Article  Google Scholar 

  18. D’Abrusco, R., Massaro, F., Paggi, A., Smith, H.A., Masetti, N., Landoni, M., Tosti, G.: Astrophys. J. Suppl. Ser. 215, 14 (2014)

    ADS  Article  Google Scholar 

  19. Ebisawa, K., Bourban, G., Bodaghee, A., Mowlavi, N., Courvoisier, T.J.-L.: Astron. Astrophys. 411, 59 (2003). astro-ph/0309101. https://doi.org/10.1051/0004-6361:20031336

    ADS  Article  Google Scholar 

  20. Fermi LAT Collaboration, Ackermann, M., Albert, A., Baldini, L., Ballet, J., Barbiellini, G., Barbieri, C., Bastieri, D., Bellazzini, R., et al.: Science 350, 801 (2015)

    ADS  Article  Google Scholar 

  21. Foreman, G., Chu, Y.-H., Gruendl, R., Hughes, A., Fields, B., Ricker, P.: Astrophys. J. 808, 44 (2015)

    ADS  Article  Google Scholar 

  22. Ginzburg, V.L.: Nat. Phys. Sci. 239, 8 (1972)

    ADS  Article  Google Scholar 

  23. Ginzburg, V.L., Ptuskin, V.S.: J. Astrophys. Astron. 5, 99 (1984)

    ADS  Article  Google Scholar 

  24. Healey, S.E., Romani, R.W., Taylor, G.B., Sadler, E.M., Ricci, R., Murphy, T., Ulvestad, J.S., Winn, J.N.: Astrophys. J. Suppl. Ser. 171, 61 (2007)

    ADS  Article  Google Scholar 

  25. H.E.S.S. Collaboration, Abramowski, A., Acero, F., Aharonian, F., Akhperjanian, A.G., Anton, G., Balenderan, S., Balzer, A., Barnacka, A., et al.: Astron. Astrophys. 545, 2 (2012)

    Google Scholar 

  26. H.E.S.S. Collaboration, Abramowski, A., Aharonian, F., Ait Benkhali, F., Akhperjanian, A.G., Angüner, E.O., Backes, M., Balenderan, S., Balzer, A., Barnacka, A., et al.: Science 347, 406 (2015)

    ADS  Article  Google Scholar 

  27. Kozłowski, S., Onken, C.A., Kochanek, C.S., Udalski, A., Szymański, M.K., Kubiak, M., Pietrzyński, G., Soszyński, I., Wyrzykowski, Ł., Ulaczyk, K., Poleski, R., Pietrukowicz, P., Skowron, J., OGLE Collaboration, Meixner, M., Bonanos, A.Z.: Astrophys. J. 775, 92 (2013)

    ADS  Article  Google Scholar 

  28. Liu, Q.Z., van Paradijs, J., van den Heuvel, E.P.J.: Astron. Astrophys. 368, 1021 (2001). https://doi.org/10.1051/0004-6361:20010075

    ADS  Article  Google Scholar 

  29. Mac Low, M.-M., McCray, R.: Astrophys. J. 324, 776 (1988)

    ADS  Article  Google Scholar 

  30. Maggi, P., Haberl, F., Kavanagh, P.J., Sasaki, M., Bozzetto, L.M., Filipović, M.D., Vasilopoulos, G., Pietsch, W., Points, S.D., Chu, Y.-H., Dickel, J., Ehle, M., Williams, R., Greiner, J.: Astron. Astrophys. 585, 162 (2016)

    ADS  Article  Google Scholar 

  31. Marshall, F.E., Gotthelf, E.V., Zhang, W., Middleditch, J., Wang, Q.D.: Astrophys. J. Lett. 499, 179 (1998)

    ADS  Article  Google Scholar 

  32. Massaro, E., Maselli, A., Leto, C., et al.: Multifrequency Catalogue of Blazars, 5th edn. Aracne Editrice, Rome (2014)

    Google Scholar 

  33. Massaro, E., Maselli, A., Leto, C., Marchegiani, P., Perri, M., Giommi, P., Piranomonte, S.: Astrophys. Space Sci. 357, 75 (2015)

    ADS  Article  Google Scholar 

  34. Massaro, F., D’Abrusco, R.: Astrophys. J. 827, 67 (2016)

    ADS  Article  Google Scholar 

  35. Mattox, J.R., Bertsch, D.L., Chiang, J., Dingus, B.L., Digel, S.W., Esposito, J.A., Fierro, J.M., Hartman, R.C., Hunter, S.D., Kanbach, G., Kniffen, D.A., Lin, Y.C., Macomb, D.J., Mayer-Hasselwander, H.A., Michelson, P.F., von Montigny, C., Mukherjee, R., Nolan, P.L., Ramanamurthy, P.V., Schneid, E., Sreekumar, P., Thompson, D.J., Willis, T.D.: Astrophys. J. 461, 396 (1996)

    ADS  Article  Google Scholar 

  36. Schwope, A., Hasinger, G., Lehmann, I., Schwarz, R., Brunner, H., Neizvestny, S., Ugryumov, A., Balega, Y., Trümper, J., Voges, W.: Astron. Nachr. 321, 1 (2000)

    ADS  Article  Google Scholar 

  37. Secrest, N.J., Dudik, R.P., Dorland, B.N., Zacharias, N., Makarov, V., Fey, A., Frouard, J., Finch, C.: Astrophys. J. Suppl. Ser. 221, 12 (2015)

    ADS  Article  Google Scholar 

  38. Seward, F.D., Charles, P.A., Foster, D.L., Dickel, J.R., Romero, P.S., Edwards, Z.I., Perry, M., Williams, R.M.: Astrophys. J. 759, 123 (2012)

    ADS  Article  Google Scholar 

  39. Sreekumar, P., Bertsch, D.L., Dingus, B.L., Fichtel, C.E., Hartman, R.C., Hunter, S.D., Kanbach, G., Kniffen, D.A., Lin, Y.C., Mattox, J.R., Mayer-Hasselwander, H.A., Michelson, P.F., von Montigny, C., Nolan, P.L., Pinkau, K., Schneid, E.J., Thompson, D.J.: Astrophys. J. Lett. 400, 67 (1992)

    ADS  Article  Google Scholar 

  40. Tang, Q.-W.: Astrophys. Space Sci. 363, 25 (2018)

    ADS  Article  Google Scholar 

  41. Wang, Q.D., Gotthelf, E.V., Chu, Y.-H., Dickel, J.R.: Astrophys. J. 559, 275 (2001)

    ADS  Article  Google Scholar 

  42. Warwick, R.S., Saxton, R.D., Read, A.M.: Astron. Astrophys. 548, 99 (2012)

    ADS  Article  Google Scholar 

  43. White, N.E., Giommi, P., Angelini, L.: VizieR Online Data Catalog 9031 (2000)

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Acknowledgements

We are grateful to the anonymous referee, whose careful reading of the manuscript and his/her useful comments greatly improved this paper. We acknowledge the use of archival Fermi-LAT data.

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Correspondence to R. Campana.

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Campana, R., Massaro, E. & Bernieri, E. Minimum Spanning Tree cluster analysis of the LMC region above 10 GeV: detection of the SNRs N 49B and N 63A. Astrophys Space Sci 363, 144 (2018). https://doi.org/10.1007/s10509-018-3368-0

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Keywords

  • \(\gamma \)-rays: observations
  • \(\gamma \)-rays: source detection