eprintid: 10196344
rev_number: 8
eprint_status: archive
userid: 699
dir: disk0/10/19/63/44
datestamp: 2024-08-28 14:43:25
lastmod: 2024-12-19 07:10:08
status_changed: 2024-08-28 14:43:25
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Heyl, J
creators_name: Doroshenko, V
creators_name: González-Caniulef, D
creators_name: Caiazzo, I
creators_name: Poutanen, J
creators_name: Mushtukov, A
creators_name: Tsygankov, SS
creators_name: Kirmizibayrak, D
creators_name: Bachetti, M
creators_name: Pavlov, GG
creators_name: Forsblom, SV
creators_name: Malacaria, C
creators_name: Suleimanov, VF
creators_name: Agudo, I
creators_name: Antonelli, LA
creators_name: Baldini, L
creators_name: Baumgartner, WH
creators_name: Bellazzini, R
creators_name: Bianchi, S
creators_name: Bongiorno, SD
creators_name: Bonino, R
creators_name: Brez, A
creators_name: Bucciantini, N
creators_name: Capitanio, F
creators_name: Castellano, S
creators_name: Cavazzuti, E
creators_name: Chen, CT
creators_name: Ciprini, S
creators_name: Costa, E
creators_name: De Rosa, A
creators_name: Del Monte, E
creators_name: Di Gesu, L
creators_name: Di Lalla, N
creators_name: Di Marco, A
creators_name: Donnarumma, I
creators_name: Dovčiak, M
creators_name: Ehlert, SR
creators_name: Enoto, T
creators_name: Evangelista, Y
creators_name: Fabiani, S
creators_name: Ferrazzoli, R
creators_name: Garcia, JA
creators_name: Gunji, S
creators_name: Hayashida, K
creators_name: Iwakiri, W
creators_name: Jorstad, SG
creators_name: Kaaret, P
creators_name: Karas, V
creators_name: Kislat, F
creators_name: Kitaguchi, T
creators_name: Kolodziejczak, JJ
creators_name: Krawczynski, H
creators_name: La Monaca, F
creators_name: Latronico, L
creators_name: Liodakis, I
creators_name: Maldera, S
creators_name: Manfreda, A
creators_name: Marin, F
creators_name: Marinucci, A
creators_name: Marscher, AP
creators_name: Marshall, HL
creators_name: Massaro, F
creators_name: Matt, G
creators_name: Mitsuishi, I
creators_name: Mizuno, T
creators_name: Muleri, F
creators_name: Negro, M
creators_name: Ng, CY
creators_name: O’Dell, SL
creators_name: Omodei, N
creators_name: Oppedisano, C
creators_name: Papitto, A
creators_name: Peirson, AL
creators_name: Perri, M
creators_name: Pesce-Rollins, M
creators_name: Petrucci, PO
creators_name: Pilia, M
creators_name: Possenti, A
creators_name: Puccetti, S
creators_name: Ramsey, BD
creators_name: Rankin, J
creators_name: Ratheesh, A
creators_name: Roberts, OJ
creators_name: Romani, RW
creators_name: Sgrò, C
creators_name: Slane, P
creators_name: Soffitta, P
creators_name: Spandre, G
creators_name: Swartz, DA
creators_name: Tamagawa, T
creators_name: Tavecchio, F
creators_name: Taverna, R
creators_name: Tawara, Y
creators_name: Tennant, AF
creators_name: Thomas, NE
creators_name: Tombesi, F
creators_name: Trois, A
creators_name: Turolla, R
creators_name: Vink, J
creators_name: Weisskopf, MC
title: Complex rotational dynamics of the neutron star in Hercules X-1 revealed by X-ray polarization
ispublished: pub
divisions: UCL
divisions: B04
divisions: C06
divisions: F63
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions.
abstract: In an accreting X-ray pulsar, a neutron star accretes matter from a companion star through an accretion disk. The magnetic field of the rotating neutron star disrupts the inner edge of the disk, funnelling the gas to flow onto the poles on its surface. Hercules X-1 is a prototypical persistent X-ray pulsar about 7 kpc from Earth. Its emission varies on three distinct timescales: the neutron star rotates every 1.2 s, it is eclipsed by its companion each 1.7 d, and the system exhibits a superorbital period of 35 d, which has remained stable since its discovery. Several lines of evidence point to the source of this variation as the precession of the accretion disk or that of the neutron star. Despite the many hints over the past 50 yr, the precession of the neutron star itself has yet not been confirmed or refuted. X-ray polarization measurements (probing the spin geometry of Her X-1) with the Imaging X-ray Polarimetry Explorer suggest that free precession of the neutron star crust sets the 35 d period; this has the important implication that its crust is somewhat asymmetric by a few parts per ten million.
date: 2024-08
date_type: published
publisher: NATURE PORTFOLIO
official_url: http://dx.doi.org/10.1038/s41550-024-02295-8
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2290990
doi: 10.1038/s41550-024-02295-8
lyricists_name: Wu, Kinwah
lyricists_name: Zane, Silvia
lyricists_id: KWUXX50
lyricists_id: SZANE58
actors_name: Kalinowski, Damian
actors_id: DKALI47
actors_role: owner
funding_acknowledgements: [National Aeronautics and Space Administration (NASA)]; NNM15AA18C [Ball Aerospace]; ASI-ASI-OHBI-2022-13-I.0 [Italian Space Agency]; ASI-INAF-2022-19-HH.0 [Italian Space Agency]; ASI-INFN-2017.13-H0 [Italian Space Agency]; ASI-INAF-2022-14-HH.0 [Space Science Data Center]; ASI-INFN 2021-43-HH.0 [Space Science Data Center]; [Italian National Institute for Astrophysics]; [Italian National Institute for Nuclear Physics]; [Natural Sciences and Engineering Research Council of Canada through a discovery grant]; [Canadian Space Agency]; [French National Centre for Space Studies]; 333112 [Academy of Finland]; 349144 [Academy of Finland]; [Vaisala Foundation]; 57525212 [German Academic Exchange Service]
full_text_status: public
publication: Nature Astronomy
volume: 9
pagerange: 1047-1053
pages: 12
citation:        Heyl, J;    Doroshenko, V;    González-Caniulef, D;    Caiazzo, I;    Poutanen, J;    Mushtukov, A;    Tsygankov, SS;                                                                                                                                                                                                                                                                                                                                                                                     ... Weisskopf, MC; + view all <#>        Heyl, J;  Doroshenko, V;  González-Caniulef, D;  Caiazzo, I;  Poutanen, J;  Mushtukov, A;  Tsygankov, SS;  Kirmizibayrak, D;  Bachetti, M;  Pavlov, GG;  Forsblom, SV;  Malacaria, C;  Suleimanov, VF;  Agudo, I;  Antonelli, LA;  Baldini, L;  Baumgartner, WH;  Bellazzini, R;  Bianchi, S;  Bongiorno, SD;  Bonino, R;  Brez, A;  Bucciantini, N;  Capitanio, F;  Castellano, S;  Cavazzuti, E;  Chen, CT;  Ciprini, S;  Costa, E;  De Rosa, A;  Del Monte, E;  Di Gesu, L;  Di Lalla, N;  Di Marco, A;  Donnarumma, I;  Dovčiak, M;  Ehlert, SR;  Enoto, T;  Evangelista, Y;  Fabiani, S;  Ferrazzoli, R;  Garcia, JA;  Gunji, S;  Hayashida, K;  Iwakiri, W;  Jorstad, SG;  Kaaret, P;  Karas, V;  Kislat, F;  Kitaguchi, T;  Kolodziejczak, JJ;  Krawczynski, H;  La Monaca, F;  Latronico, L;  Liodakis, I;  Maldera, S;  Manfreda, A;  Marin, F;  Marinucci, A;  Marscher, AP;  Marshall, HL;  Massaro, F;  Matt, G;  Mitsuishi, I;  Mizuno, T;  Muleri, F;  Negro, M;  Ng, CY;  O’Dell, SL;  Omodei, N;  Oppedisano, C;  Papitto, A;  Peirson, AL;  Perri, M;  Pesce-Rollins, M;  Petrucci, PO;  Pilia, M;  Possenti, A;  Puccetti, S;  Ramsey, BD;  Rankin, J;  Ratheesh, A;  Roberts, OJ;  Romani, RW;  Sgrò, C;  Slane, P;  Soffitta, P;  Spandre, G;  Swartz, DA;  Tamagawa, T;  Tavecchio, F;  Taverna, R;  Tawara, Y;  Tennant, AF;  Thomas, NE;  Tombesi, F;  Trois, A;  Turolla, R;  Vink, J;  Weisskopf, MC;   - view fewer <#>    (2024)    Complex rotational dynamics of the neutron star in Hercules X-1 revealed by X-ray polarization.                   Nature Astronomy , 9    pp. 1047-1053.    10.1038/s41550-024-02295-8 <https://doi.org/10.1038/s41550-024-02295-8>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10196344/1/Zane_Complex%20rotational%20dynamics%20of%20the%20neutron%20star%20in%20Hercules%20X-1%20revealed%20by%20X-ray%20polarization_AAM.pdf