New blazar candidates from the 9Y-MST catalogue detected at energies higher than 10 GeV

  • R. CampanaEmail author
  • E. Massaro
Original Article


We present a list of 24 new blazar candidates selected in a search for possible counterparts of spatial clusters of \(\gamma \)-ray photons in the recent 9Y-MST catalogue, at energies higher than 10 GeV and at Galactic latitudes higher than \(20^{\circ}\). 13 of these clusters are also included in the preliminary release of the 4FGL catalogue of \(\gamma \)-ray sources. The search for possible counterparts is based on the possible associations of the clusters with radio sources within a circle having a radius of \(6'\). We then investigated the possible optical or mid-IR associations of these sources, checking if they show some properties typical of new blazar candidates.


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



We acknowledge use of archival Fermi data. We made large use of the online version of the Roma-BZCAT and of the scientific tools developed at the ASI Space Science Data Center (SSDC), of the final release of 6dFGS archive, of the Sloan Digital Sky Survey (SDSS) archive, of the NED database and other astronomical catalogues distributed in digital form (Vizier and Simbad) at Centre de Dates astronomiques de Strasbourg (CDS) at the Louis Pasteur University. This publication makes also use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration.

Compliance with ethical standards

Conflict of Interest: The authors declare that they have no conflict of interest. Ethical approval: This article does not contain any studies with human participants or animals performed by any of the authors.


  1. Abdo, A.A., Ackermann, M., Ajello, M., Allafort, A., Antolini, E., Atwood, W.B., Axelsson, M., Baldini, L., et al.: Astrophys. J. 715, 429 (2010) ADSCrossRefGoogle Scholar
  2. Ackermann, M., Ajello, M., Allafort, A., Asano, K., Atwood, W.B., Baldini, L., Ballet, J., Barbiellini, G., et al.: Astrophys. J. 765, 54 (2013) ADSCrossRefGoogle Scholar
  3. Ajello, M., Atwood, W.B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., Blandford, R.D., Bloom, E.D., Bonino, R., Bregeon, J., Britto, R.J., Bruel, P., Buehler, R., Buson, S., Cameron, R.A., Caputo, R., Caragiulo, M., Caraveo, P.A., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C.C., Chiaro, G., Ciprini, S., Cohen, J.M., Costantin, D., Costanza, F., Cuoco, A., Cutini, S., D’Ammando, F., de Palma, F., Desiante, R., Digel, S.W., Di Lalla, N., Di Mauro, M., Di Venere, L., Domínguez, A., Drell, P.S., Dumora, D., Favuzzi, C., Fegan, S.J., Ferrara, E.C., Fortin, P., Franckowiak, A., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giommi, P., Giordano, F., Giroletti, M., Glanzman, T., Green, D., Grenier, I.A., Grondin, M.-H., Grove, J.E., Guillemot, L., Guiriec, S., Harding, A.K., Hays, E., Hewitt, J.W., Horan, D., Jóhannesson, G., Kensei, S., Kuss, M., La Mura, G., Larsson, S., Latronico, L., Lemoine-Goumard, M., Li, J., Longo, F., Loparco, F., Lott, B., Lubrano, P., Magill, J.D., Maldera, S., Manfreda, A., Mazziotta, M.N., McEnery, J.E., Meyer, M., Michelson, P.F., Mirabal, N., Mitthumsiri, W., Mizuno, T., Moiseev, A.A., Monzani, M.E., Morselli, A., Moskalenko, I.V., Negro, M., Nuss, E., Ohsugi, T., Omodei, N., Orienti, M., Orlando, E., Palatiello, M., Paliya, V.S., Paneque, D., Perkins, J.S., Persic, M., Pesce-Rollins, M., Piron, F., Porter, T.A., Principe, G., Rainò, S., Rando, R., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Reposeur, T., Saz Parkinson, P.M., Sgrò, C., Simone, D., Siskind, E.J., Spada, F., Spandre, G., Spinelli, P., Stawarz, L., Suson, D.J., Takahashi, M., Tak, D., Thayer, J.G., Thayer, J.B., Thompson, D.J., Torres, D.F., Torresi, E., Troja, E., Vianello, G., Wood, K., Wood, M.: Astrophys. J. Suppl. Ser. 232, 18 (2017) ADSCrossRefGoogle Scholar
  4. Bernieri, E., Campana, R., Massaro, E., Paggi, A., Tramacere, A.: Astron. Astrophys. 551, 5 (2013) ADSCrossRefGoogle Scholar
  5. Brescia, M., Cavuoti, S., Longo, G.: Mon. Not. R. Astron. Soc. 450, 3893 (2015) ADSCrossRefGoogle Scholar
  6. Campana, R., Massaro, E., Gasparrini, D., Cutini, S., Tramacere, A.: Mon. Not. R. Astron. Soc. 383, 1166 (2008) ADSCrossRefGoogle Scholar
  7. Campana, R., Bernieri, E., Massaro, E., Tinebra, F., Tosti, G.: Astrophys. Space Sci. 347, 169 (2013) ADSCrossRefGoogle Scholar
  8. Campana, R., Massaro, E., Bernieri, E., D’Amato, Q.: Astrophys. Space Sci. 360, 19 (2015) CrossRefGoogle Scholar
  9. Campana, R., Massaro, E., Bernieri, E.: Astrophys. Space Sci. 361, 367 (2016a). 1609.06488 ADSCrossRefGoogle Scholar
  10. Campana, R., Massaro, E., Bernieri, E.: Astrophys. Space Sci. 361, 185 (2016b) ADSCrossRefGoogle Scholar
  11. Campana, R., Massaro, E., Bernieri, E.: Astrophys. Space Sci. 361, 183 (2016c) ADSCrossRefGoogle Scholar
  12. Campana, R., Maselli, A., Bernieri, E., Massaro, E.: Mon. Not. R. Astron. Soc. 465, 2784 (2017) ADSCrossRefGoogle Scholar
  13. Campana, R., Massaro, E., Bernieri, E.: Astron. Astrophys. 619, 23 (2018) ADSCrossRefGoogle Scholar
  14. Costamante, L., Ghisellini, G., Giommi, P., Tagliaferri, G., Celotti, A., Chiaberge, M., Fossati, G., Maraschi, L., Tavecchio, F., Treves, A., Wolter, A.: Astron. Astrophys. 371, 512 (2001) ADSCrossRefGoogle Scholar
  15. Cutri, R.M., Wright, E.L., Conrow, T., Fowler, J.W., Eisenhardt, P.R.M., Grillmair, C., Kirkpatrick, J.D., Masci, F., et al.: Explanatory supplement to the AllWISE data release products. Technical report (November 2013) Google Scholar
  16. D’Abrusco, R., Massaro, F., Paggi, A., Smith, H.A., Masetti, N., Landoni, M., Tosti, G.: Astrophys. J. Suppl. Ser. 215, 14 (2014) ADSCrossRefGoogle Scholar
  17. D’Abrusco, R., Álvarez Crespo, N., Massaro, F., Campana, R., Chavushyan, V., Landoni, M., La Franca, F., Masetti, N., Milisavljevic, D., Paggi, A.: Astrophys. J. Suppl. Ser. 242(1), 4 (2019) ADSCrossRefGoogle Scholar
  18. Fan, J.H., Yang, J.H., Liu, Y., Luo, G.Y., Lin, C., Yuan, Y.H., Xiao, H.B., Zhou, A.Y., Hua, T.X., Pei, Z.Y.: Astrophys. J. Suppl. Ser. 226(2), 20 (2016) ADSCrossRefGoogle Scholar
  19. Flesch, E.W.: Publ. Astron. Soc. Aust. 32, 010 (2015) ADSCrossRefGoogle Scholar
  20. Flesch, E.W.: Publ. Astron. Soc. Aust. 33, 052 (2016) ADSCrossRefGoogle Scholar
  21. Hurley-Walker, N., Callingham, J.R., Hancock, P.J., Franzen, T.M.O., Hindson, L., Kapińska, A.D., Morgan, J., Offringa, A.R., Wayth, R.B., Wu, C., Zheng, Q., Murphy, T., Bell, M.E., Dwarakanath, K.S., For, B., Gaensler, B.M., Johnston-Hollitt, M., Lenc, E., Procopio, P., Staveley-Smith, L., Ekers, R., Bowman, J.D., Briggs, F., Cappallo, R.J., Deshpande, A.A., Greenhill, L., Hazelton, B.J., Kaplan, D.L., Lonsdale, C.J., McWhirter, S.R., Mitchell, D.A., Morales, M.F., Morgan, E., Oberoi, D., Ord, S.M., Prabu, T., Shankar, N.U., Srivani, K.S., Subrahmanyan, R., Tingay, S.J., Webster, R.L., Williams, A., Williams, C.L.: Mon. Not. R. Astron. Soc. 464, 1146 (2017) ADSCrossRefGoogle Scholar
  22. Lacy, M.: Astrophys. J. Lett. 536, 1 (2000) ADSCrossRefGoogle Scholar
  23. Makarov, D., Prugniel, P., Terekhova, N., Courtois, H., Vauglin, I.: Astron. Astrophys. 570, 13 (2014) ADSCrossRefGoogle Scholar
  24. Massaro, F., D’Abrusco, R.: Astrophys. J. 827, 67 (2016) ADSCrossRefGoogle Scholar
  25. Massaro, E., Nesci, R., Piranomonte, S.: Mon. Not. R. Astron. Soc. 422, 2322 (2012) ADSCrossRefGoogle Scholar
  26. Massaro, F., Paggi, A., Errando, M., D’Abrusco, R., Masetti, N., Tosti, G., Funk, S.: Astrophys. J. Suppl. Ser. 207, 16 (2013) ADSCrossRefGoogle Scholar
  27. Massaro, E., Maselli, A., Leto, C., et al.: Multifrequency Catalogue of Blazars, 5th edn. Aracne Editrice, Rome (2014) Google Scholar
  28. Massaro, F., Thompson, D.J., Ferrara, E.C.: Astron. Astrophys. Rev. 24, 2 (2016) ADSCrossRefGoogle Scholar
  29. Massaro, F., Marchesini, E.J., D’Abrusco, R., Masetti, N., Andruchow, I., Smith, H.A.: Astrophys. J. 834, 113 (2017) ADSCrossRefGoogle Scholar
  30. 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). ADSCrossRefGoogle Scholar
  31. Plotkin, R.M., Anderson, S.F., Hall, P.B., Margon, B., Voges, W., Schneider, D.P., Stinson, G., York, D.G.: Astron. J. 135, 2453 (2008) ADSCrossRefGoogle Scholar
  32. Reid, R.I., Kronberg, P.P., Perley, R.A.: Astrophys. J. Suppl. Ser. 124, 285 (1999) ADSCrossRefGoogle Scholar
  33. Richards, G.T., Myers, A.D., Peters, C.M., Krawczyk, C.M., Chase, G., Ross, N.P., Fan, X., Jiang, L., Lacy, M., McGreer, I.D., Trump, J.R., Riegel, R.N.: Astrophys. J. Suppl. Ser. 219, 39 (2015). 1507.07788 ADSCrossRefGoogle Scholar
  34. Roberts, D.H., Cohen, J.P., Lu, J., Saripalli, L., Subrahmanyan, R.: Astrophys. J. Suppl. Ser. 220, 7 (2015) ADSCrossRefGoogle Scholar
  35. 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) ADSCrossRefGoogle Scholar
  36. The Fermi-LAT collaboration: arXiv e-prints (2019). 1902.10045
  37. Turriziani, S., Cavazzuti, E., Giommi, P.: Astron. Astrophys. 472, 699 (2007) ADSCrossRefGoogle Scholar
  38. Ungruhe, R., Seitter, W.C., Duerbeck, H.W.: J. Astron. Data 9, 1U (2003) Google Scholar

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© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.INAF/OAS-BolognaBolognaItaly
  2. 2.INAF/IAPSRomaItaly
  3. 3.In Unam SapientiamRomaItaly

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