A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
The geometry of the hot corona in MCG-05-23-16 constrained by X-ray polarimetry
Tekijät: Tagliacozzo D., Marinucci A., Ursini F., Matt G., Bianchi S., Baldini L., Barnouin T., Cavero Rodriguez N., De Rosa A., Di Gesu L., Dovčiak M., Harper D., Ingram A., Karas V., Kim D.E., Krawczynski H., Madejski G., Marin F., Middei R., Marshall H.L., Muleri F., Panagiotou C., Petrucci P.O., Podgorny J., Poutanen J., Puccetti S., Soffitta P., Tombesi F., Veledina A., Zhang W., Agudo I., Antonelli L.A., Bachetti M., Baumgartner W.H., Bellazzini R., Bongiorno S.D., Bonino R., Brez A., Bucciantini N., Capitanio F., Castellano S., Cavazzuti E., Chen C.T., Ciprini S., Costa E., Del Monte E., Di Lalla N., Di Marco A., Donnarumma I., Doroshenko V., Ehlert S.R., Enoto T., Evangelista Y., Fabiani S., Ferrazzoli R., Garcia J.A., Gunji S., Heyl J., Iwakiri W., Jorstad S.G., Kaaret P., Kislat F., Kitaguchi T., Kolodziejczak J.J., La Monaca F., Latronico L., Liodakis I., Maldera S., Manfreda A., Marscher A.P., Massaro F., Mitsuishi I., Mizuno T., Negro M., Ng C.Y., O'Dell S.L., Omodei N., Oppedisano C., Papitto A., Pavlov G.G., Peirson A.L., Perri M., Pesce-Rollins M., Pilia M., Possenti A., Ramsey B.D., Rankin J., Ratheesh A., Roberts O.J., Romani R.W., Sgrò C., Slane P., Spandre G., Swartz D.A., Tamagawa T., Tavecchio F., Taverna R., Tawara Y., Tennant A.F., Thomas N.E., Trois A., Tsygankov S.S., Turolla R., Vink J., Weisskopf M.C., Wu K., Xie F., Zane S.
Kustantaja: Oxford University Press
Julkaisuvuosi: 2023
Journal: Monthly Notices of the Royal Astronomical Society
Tietokannassa oleva lehden nimi: Monthly Notices of the Royal Astronomical Society
Vuosikerta: 525
Numero: 3
Aloitussivu: 4735
Lopetussivu: 4743
eISSN: 1365-2966
DOI: https://doi.org/10.1093/mnras/stad2627
Verkko-osoite: https://academic.oup.com/mnras/article/525/3/4735/7258658
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/181482679
We report on the second observation of the radio-quiet active galactic nucleus MCG-05-23-16 performed with the Imaging X-ray Polarimetry Explorer (IXPE). The observation started on 2022 November 6 for a net observing time of 640 ks, and was partly simultaneous with NuSTAR (86 ks). After combining these data with those obtained in the first IXPE pointing on 2022 May (simultaneous with XMM–Newton and NuSTAR ) we find a 2–8 keV polarization degree Π = 1.6 ± 0.7 (at 68 per cent confidence level), which corresponds to an upper limit Π = 3.2 per cent (at 99 per cent confidence level). We then compare the polarization results with Monte Carlo simulations obtained with the MONK code, with which different coronal geometries have been explored (spherical lamppost, conical, slab, and wedge). Furthermore, the allowed range of inclination angles is found for each geometry. If the best-fitting inclination value from a spectroscopic analysis is considered, a cone-shaped corona along the disc axis is disfavoured.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
