The IXPE View of GRB 221009A
| Title: | The IXPE View of GRB 221009A |
|---|---|
| Authors: | Negro, M; Di Lallaa, N; Omodei, N; Veres, P; Silvestri, S; Manfreda, A; Burns, E; Baldini, L; Costa, E; Ehlert, SR; Kennea, JA; Liodakis, I; Marshall, HL; Mereghetti, S; Middei, R; Muleri, F; O'Dell, SL; Roberts, OJ; Romani, RW; Sgro, C; Terashima, M; Tiengo, A; Viscolo, D; Di Marco, A; La Monaca, F; Latronico, L; Matt, G; Perri, M; Puccetti, S; Poutanen, J; Ratheesh, A; Rogantini, D; Slane, P; Soffitta, P; Lindfors, E; Nilsson, K; Kasikov, A; Marscher, AP; Tavecchio, F; Cibrario, N; Gunji, S; Malacaria, C; Paggi, A; Yang, YJ; Zane, S; Weisskopf, MC; Agudo, I; Antonelli, LA; Bachetti, M; Baumgartner, WH; Bellazzini, R; Bianchi, S; Bongiorno, SD; Bonino, R; Brez, A; Bucciantini, N; Capitanio, F; Castellano, S; Cavazzuti, E; Chen, CT; Ciprini, S; De Rosa, A; Del Monte, E; Di Gesu, L; Donnarumma, I; Doroshenko, V; Dovciak, M; Enoto, T; Evangelista, Y; Fabiani, S; Ferrazzoli, R; Garcia, JA; Hayashida, K; Heyl, J; Iwakiri, W; Jorstad, SG; Kaaret, P; Karas, V; Kislat, F; Kitaguchi, T; Kolodziejczak, JJ; Krawczynski, H; Maldera, S; Marin, F; Marinucci, A; Mitsuishi, I; Mizuno, T; Ng, CY; Oppedisano, C; Papitto, A; Pavlov, GG; Peirson, AL; Pesce-Rollins, M; Petrucci, PO; Pilia, M; Possenti, A; Ramsey, BD; Rankin, J; Spandre, G; Swartz, DA; Tamagawa, T; Taverna, R; Tawara, Y; Tennant, AF; Thomas, NE; Tombesi, F; Trois, A; Tsygankov, SS; Turolla, R; Vink, J; Wu, KW; Xie, F |
| Contributors: | Negro, M; Di Lallaa, N; Omodei, N; Veres, P; Silvestri, S; Manfreda, A; Burns, E; Baldini, L; Costa, E; Ehlert, Sr; Kennea, Ja; Liodakis, I; Marshall, Hl; Mereghetti, S; Middei, R; Muleri, F; O'Dell, Sl; Roberts, Oj; Romani, Rw; Sgro, C; Terashima, M; Tiengo, A; Viscolo, D; Di Marco, A; La Monaca, F; Latronico, L; Matt, G; Perri, M; Puccetti, S; Poutanen, J; Ratheesh, A; Rogantini, D; Slane, P; Soffitta, P; Lindfors, E; Nilsson, K; Kasikov, A; Marscher, Ap; Tavecchio, F; Cibrario, N; Gunji, S; Malacaria, C; Paggi, A; Yang, Yj; Zane, S; Weisskopf, Mc; Agudo, I; Antonelli, La; Bachetti, M; Baumgartner, Wh; Bellazzini, R; Bianchi, S; Bongiorno, Sd; Bonino, R; Brez, A; Bucciantini, N; Capitanio, F; Castellano, S; Cavazzuti, E; Chen, Ct; Ciprini, S; De Rosa, A; Del Monte, E; Di Gesu, L; Donnarumma, I; Doroshenko, V; Dovciak, M; Enoto, T; Evangelista, Y; Fabiani, S; Ferrazzoli, R; Garcia, Ja; Hayashida, K; Heyl, J; Iwakiri, W; Jorstad, Sg; Kaaret, P; Karas, V; Kislat, F; Kitaguchi, T; Kolodziejczak, Jj; Krawczynski, H; Maldera, S; Marin, F; Marinucci, A; Mitsuishi, I; Mizuno, T; Ng, Cy; Oppedisano, C; Papitto, A; Pavlov, Gg; Peirson, Al; Pesce-Rollins, M; Petrucci, Po; Pilia, M; Possenti, A; Ramsey, Bd; Rankin, J; Spandre, G; Swartz, Da |
| Publisher Information: | IOP Publishing Ltd |
| Publication Year: | 2023 |
| Collection: | Padua Research Archive (IRIS - Università degli Studi di Padova) |
| Description: | We present the IXPE observation of GRB 221009A, which includes upper limits on the linear polarization degree of both prompt and afterglow emission in the soft X-ray energy band. GRB 221009A is an exceptionally bright gamma-ray burst (GRB) that reached Earth on 2022 October 9 after traveling through the dust of the Milky Way. The Imaging X-ray Polarimetry Explorer (IXPE) pointed at GRB 221009A on October 11 to observe, for the first time, the 2-8 keV X-ray polarization of a GRB afterglow. We set an upper limit to the polarization degree of the afterglow emission of 13.8% at a 99% confidence level. This result provides constraints on the jet opening angle and the viewing angle of the GRB, or alternatively, other properties of the emission region. Additionally, IXPE captured halo-rings of dust-scattered photons that are echoes of the GRB prompt emission. The 99% confidence level upper limit to the prompt polarization degree depends on the background model assumption, and it ranges between similar to 55% and similar to 82%. This single IXPE pointing provides both the first assessment of X-ray polarization of a GRB afterglow and the first GRB study with polarization observations of both the prompt and afterglow phases. |
| Document Type: | article in journal/newspaper |
| File Description: | STAMPA |
| Language: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/wos/WOS:000982868800001; volume:946; issue:1; firstpage:21; lastpage:41; numberofpages:21; journal:THE ASTROPHYSICAL JOURNAL LETTERS; https://hdl.handle.net/11577/3485902 |
| DOI: | 10.3847/2041-8213/acba17 |
| Availability: | https://hdl.handle.net/11577/3485902; https://doi.org/10.3847/2041-8213/acba17 |
| Rights: | info:eu-repo/semantics/openAccess ; license:Creative commons ; license uri:http://creativecommons.org/licenses/by/4.0/ |
| Accession Number: | edsbas.7EF31AF9 |
| Database: | BASE |