The XXL survey: First results and future

Pierre, M; Adami, C.; Birkinshaw, M.; Chiappetti, L.; Ettori, S.; Evrard, A.; Faccioli, L.; Gastaldello, F.; Giles, P.; Horellou, C.; Iovino, A.; Koulouridis, E.; Lidman, C.; Le Brun, A.; Maughan, B.; Maurogordato, S.; Mccarthy, I.; Miyazaki, S.; Pacaud, F.; Paltani, S.; Plionis, M.; Reiprich, T.; Sadibekova, T.; Smolcic, V.; Snowden, S.; Surdej, J.; Tsirou, M.; Vignali, C.; Willis, J.; Alis, S.; Altieri, B.; Baran, N.; Benoist, C.; Bongiorno, A.; Bremer, M.; Butler, A.; Cappi, A.; Caretta, C.; Ciliegi, P.; Clerc, N.; Corasaniti, P. S.; Coupon, J.; Delhaize, J.; Delvecchio, I.; Democles, J.; Desai, S. H.; Devriendt, J.; Dubois, Y.; Eckert, D.; Elyiv, A.; Farahi, A.; Ferraril, C.; Fotopoulou, S.; Forman, W.; Georgantopoulos, I.; Guglielmo, V.; Huynh, M.; Jerlin, N.; Jones, C. H.; Lavoie, S.; Le Fevre, J. P.; Lieu, M.; Kilbinger, M.; Maruili, F.; Mantz, A.; Mcgee, S.; Melin, J. B.; Melnyk, O.; Moscardini, L.; Novak, M.; Piconcelli, E.; Poggianti, B.; Pomarede, D.; Pompei, E.; Ponman, T.; Ramos Ceja, M. E.; Rana, P.; Rapetti, D.; Raychaudhury, S.; Ricci, M.; Rottgering, H.; Sahlen, M.; Sauvageot, J. L.; Schimd, C.; Sereno, M.; Smith, G. P.; Umetsu, K.; Valageas, P.; Valotti, A.; Valtchanov, I.; Veropalumbo, A.; Ascaso, B.; Barnes, D.; De Petris, Marco; Durret, F.; Donahue, M.; Ithana, M.; Jarvis, M.; Johnston Hollitt, M.; Kalfountzou, E.; Kay, S.; La Franca, F.; Okabe, N.; Muzzin, A.; Rettura, A.; Ridl, J.; Risaliti, G.; Takizawa, M.; Thomas, P.; Truong, N.

doi:10.1002/asna.201713352

The XXL survey currently covers two 25 deg2 patches with XMM observations of ∼10 ks. We summarize the scientific results associated with the first release of the XXL dataset, which occurred in mid-2016. We review several arguments for increasing the survey depth to 40 ks during the next decade of XMM operations. X-ray (z < 2) cluster, (z < 4) active galactic nuclei (AGN), and cosmic background survey science will then benefit from an extraordinary data reservoir. This, combined with deep multi-λ observations, will lead to solid standalone cosmological constraints and provide a wealth of information on the formation and evolution of AGN, clusters, and the X-ray background. In particular, it will offer a unique opportunity to pinpoint the z > 1 cluster density. It will eventually constitute a reference study and an ideal calibration field for the upcoming eROSITA and Euclid missions.

The XXL survey: First results and future / Pierre, M., Adami, C., Birkinshaw, M., Chiappetti, L., Ettori, S., Evrard, A., Faccioli, L., Gastaldello, F., Giles, P., Horellou, C., Iovino, A., Koulouridis, E., Lidman, C., Le Brun, A., Maughan, B., Maurogordato, S., Mccarthy, I., Miyazaki, S., Pacaud, F., Paltani, S., et al.. - In: ASTRONOMISCHE NACHRICHTEN. - ISSN 0004-6337. - STAMPA. - 338:2-3(2017), pp. 334-341. [10.1002/asna.201713352]