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Observing with NIKA2Pol from the IRAM 30m telescope : Early results on the commissioning phase

Ritacco, A., Adam, R., Ade, P. ORCID:, Ajeddig, H., André, P., Andrianasolo, A., Aussel, H., Beelen, A., Benoît, A., Bideaud, A., Bourrion, O., Calvo, M., Catalano, A., Comis, B., De Petris, M., Désert, F.-X., Doyle, S. ORCID:, Driessen, E.F.C., Gomez, A., Goupy, J., Kéruzoré, F., Kramer, C., Ladjelate, B., Lagache, G., Leclercq, S., Lestrade, J.-F., Macías-Pérez, J.F., Mauskopf, P. ORCID:, Maury, A., Mayet, F., Monfardini, A., Perotto, L., Pisano, G. ORCID:, Ponthieu, N., Revéret, V., Romero, C., Roussel, H., Ruppin, F., Schuster, K., Shimajiri, Y., Shu, S., Sievers, A., Tucker, C. ORCID: and Zylka, R. 2020. Observing with NIKA2Pol from the IRAM 30m telescope : Early results on the commissioning phase. EPJ Web of Conferences 228 , 00022. 10.1051/epjconf/202022800022

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The NIKA2 polarization channel at 260 GHz (1.15 mm) has been proposed primarily to observe galactic star-forming regions and probe the critical scales between 0.01-0.05 pc at which magnetic field lines may channel the matter of interstellar filaments into growing dense cores. The NIKA2 polarime-ter consists of a room temperature continuously rotating multi-mesh HWP and a cold polarizer that separates the two orthogonal polarizations onto two 260 GHz KIDs arrays. We describe in this paper the preliminary results obtained during the most recent commissioning campaign performed in December 2018. We concentrate here on the analysis of the extended sources, while the observation of compact sources is presented in a companion paper [12]. We present preliminary NIKA2 polarization maps of the Crab nebula. We find that the integrated polarization intensity flux measured by NIKA2 is consistent with expectations. In terms of polarization angle, we are still limited by systematic uncertainties that will be further investigated in the forthcoming commissioning campaigns.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: EDP Sciences
ISSN: 2100-014X
Date of First Compliant Deposit: 10 March 2020
Date of Acceptance: 27 January 2020
Last Modified: 09 May 2023 01:19

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