A Precessing Stellar Disk Model for Superorbital Modulations of the Gamma-Ray Binary LS I+61° 303

被引：1
作者：
Chen, A. M. [1 ,2 ]
Takata, J. [3 ]
Yu, Y. W. [2 ,4 ]
机构：
[1] Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 201210, Peoples R China
[2] Cent China Normal Univ, MOE, Key Lab Quark & Lepton Phys, Wuhan 430079, Peoples R China
[3] Huazhong Univ Sci & Technol, Sch Phys, Dept Astron, Wuhan 430074, Peoples R China
[4] Cent China Normal Univ, Inst Astrophys, Wuhan 430079, Peoples R China
来源：
ASTROPHYSICAL JOURNAL | 2024年 / 973卷 / 02期
基金：
国家重点研发计划; 中国博士后科学基金; 中国国家自然科学基金;
关键词：
HIGH-ENERGY EMISSIONS; LONG-TERM MODULATION; X-RAY; VERITAS OBSERVATIONS; ORBITAL PERIODS; RADIO-EMISSION; LIGHT CURVES; PULSAR WIND; H-ALPHA; VARIABILITY;
D O I：
10.3847/1538-4357/ad6b0a
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Gamma-ray binary LS I+61 degrees 303 consists of a neutron star orbiting around a Be star with a period of P orb similar or equal to 26.5 days. Apart from orbital modulations, the binary shows long-term flux variations with a superorbital period of Psup similar or equal to 4.6yr as seen in nearly all wavelengths. The origin of this superorbital modulation is still not well understood. Under the pulsar wind-stellar outflow interaction scenario, we propose that the superorbital modulations of LS I+61 degrees 303 could be caused by the precession of the Be disk. Assuming X-rays arise from synchrotron radiation of the intrabinary shock, we develop an analytical model to calculate expected flux modulations over the orbital and superorbital phases. The asymmetric two-peak profiles in orbital light curves and sinusoidal-like long-term modulations are reproduced under the precessing disk scenario. The observed orbital phase drifting of the X-ray peak and our fitting of long-term X-ray data indicate that the neutron star is likely orbiting around the star with a small eccentricity and periastron phase around Phi p similar to 0.6. We compare the Corbet diagrams of LS I+61 degrees 303 with other Be/X-ray binaries, and the linear correlation in the Psup-Porb diagram suggests that the precession of the Be disk in LS I+61 degrees 303 is induced by the tidal torque of its neutron star companion.
引用
收藏
页数：11
相关论文
共 33 条
  • [21] Orbital variability of the optical linear polarization of the γ-ray binary LS I+61° 303 and new constraints on the orbital parameters
    Kravtsov, Vadim
    Berdyugin, Andrei V.
    Piirola, Vilppu
    Kosenkov, Ilia A.
    Tsygankov, Sergey S.
    Chernyakova, Maria
    Malyshev, Denys
    Sakanoi, Takeshi
    Kagitani, Masato
    Berdyugina, Svetlana V.
    Poutanen, Juri
    ASTRONOMY & ASTROPHYSICS, 2020, 643
  • [22] DETECTION OF THE γ-RAY BINARY LS I+61°303 IN A LOW-FLUX STATE AT VERY HIGH ENERGY γ-RAYS WITH THE MAGIC TELESCOPES IN 2009
    Aleksic, J.
    Alvarez, E. A.
    Antonelli, L. A.
    Antoranz, P.
    Asensio, M.
    Backes, M.
    Barrio, J. A.
    Bastieri, D.
    Becerra Gonzalez, J.
    Bednarek, W.
    Berdyugin, A.
    Berger, K.
    Bernardini, E.
    Biland, A.
    Blanch, O.
    Bock, R. K.
    Boller, A.
    Bonnoli, G.
    Tridon, D. Borla
    Bosch-Ramon, V.
    Braun, I.
    Bretz, T.
    Canellas, A.
    Carmona, E.
    Carosi, A.
    Colin, P.
    Colombo, E.
    Contreras, J. L.
    Cortina, J.
    Cossio, L.
    Covino, S.
    Dazzi, F.
    De Angelis, A.
    De Caneva, G.
    De Cea del Pozo, E.
    De Lotto, B.
    Delgado Mendez, C.
    Diago Ortega, A.
    Doert, M.
    Dominguez, A.
    Prester, D. Dominis
    Dorner, D.
    Doro, M.
    Elsaesser, D.
    Ferenc, D.
    Fonseca, M. V.
    Font, L.
    Fruck, C.
    Garcia Lopez, R. J.
    Garczarczyk, M.
    ASTROPHYSICAL JOURNAL, 2012, 746 (01)
  • [23] VERITAS OBSERVATIONS OF THE TeV BINARY LS I+61° 303 DURING 2008-2010
    Acciari, V. A.
    Aliu, E.
    Arlen, T.
    Aune, T.
    Beilicke, M.
    Benbow, W.
    Bradbury, S. M.
    Buckley, J. H.
    Bugaev, V.
    Byrum, K.
    Cannon, A.
    Cesarini, A.
    Ciupik, L.
    Collins-Hughes, E.
    Connolly, M. P.
    Cui, W.
    Dickherber, R.
    Duke, C.
    Errando, M.
    Falcone, A.
    Finley, J. P.
    Finnegan, G.
    Fortson, L.
    Furniss, A.
    Galante, N.
    Gall, D.
    Gillanders, G. H.
    Godambe, S.
    Griffin, S.
    Grube, J.
    Guenette, R.
    Gyuk, G.
    Hanna, D.
    Holder, J.
    Hughes, G.
    Hui, C. M.
    Humensky, T. B.
    Kaaret, P.
    Karlsson, N.
    Kertzman, M.
    Kieda, D.
    Krawczynski, H.
    Krennrich, F.
    Lang, M. J.
    LeBohec, S.
    Maier, G.
    Majumdar, P.
    McArthur, S.
    McCann, A.
    Moriarty, P.
    ASTROPHYSICAL JOURNAL, 2011, 738 (01)
  • [24] On the origin of correlated X-ray/VHE emission from LS I+61 303
    Zabalza, V.
    Paredes, J. M.
    Bosch-Ramon, V.
    ASTRONOMY & ASTROPHYSICS, 2011, 527 : 1 - 9
  • [25] FERMI LAT OBSERVATIONS OF LS I+61°303: FIRST DETECTION OF AN ORBITAL MODULATION IN GeV GAMMA RAYS
    Abdo, A. A.
    Ackermann, M.
    Ajello, M.
    Atwood, W. B.
    Axelsson, M.
    Baldini, L.
    Ballet, J.
    Barbiellini, G.
    Bastieri, D.
    Baughman, B. M.
    Bechtol, K.
    Bellazzini, R.
    Berenji, B.
    Blandford, R.
    Bloom, E. D.
    Bonamente, E.
    Borgland, A. W.
    Bregeon, J.
    Brez, A.
    Brigida, M.
    Bruel, P.
    Burnett, T. H.
    Caliandro, G. A.
    Cameron, R. A.
    Caraveo, P. A.
    Casandjian, J. M.
    Cavazzuti, E.
    Cecchi, C.
    Celik, Oe.
    Charles, E.
    Chaty, S.
    Chekhtman, A.
    Cheung, C. C.
    Chiang, J.
    Ciprini, S.
    Claus, R.
    Cohen-Tanugi, J.
    Cominsky, L. R.
    Conrad, J.
    Corbel, S.
    Corbet, R.
    Cutini, S.
    Dermer, C. D.
    de Angelis, A.
    de Luca, A.
    de Palma, F.
    Digel, S. W.
    Dormody, M.
    do Couto e Silva, E.
    Drell, P. S.
    ASTROPHYSICAL JOURNAL LETTERS, 2009, 701 (02) : L123 - L128
  • [26] PERIODIC VERY HIGH ENERGY γ-RAY EMISSION FROM LS I+61°303 OBSERVED WITH THE MAGIC TELESCOPE
    Albert, J.
    Aliu, E.
    Anderhub, H.
    Antonelli, L. A.
    Antoranz, P.
    Backes, M.
    Baixeras, C.
    Barrio, J. A.
    Bartko, H.
    Bastieri, D.
    Becker, J. K.
    Bednarek, W.
    Berger, K.
    Bernardini, E.
    Bigongiari, C.
    Biland, A.
    Bock, R. K.
    Bonnoli, G.
    Bordas, P.
    Bosch-Ramon, V.
    Bretz, T.
    Britvitch, I.
    Camara, M.
    Carmona, E.
    Chilingarian, A.
    Commichau, S.
    Contreras, J. L.
    Cortina, J.
    Costado, M. T.
    Covino, S.
    Curtef, V.
    Dazzi, F.
    De Angelis, A.
    De Cea del Pozo, E.
    De Los Reyes, R.
    De Lotto, B.
    De Maria, M.
    De Sabata, F.
    Mendez, C. Delgado
    Dominguez, A.
    Dorner, D.
    Doro, M.
    Errando, M.
    Fagiolini, M.
    Ferenc, D.
    Fernandez, E.
    Firpo, R.
    Fonseca, M. V.
    Font, L.
    Galante, N.
    ASTROPHYSICAL JOURNAL, 2009, 693 (01) : 303 - 310
  • [27] LONG-TERM X-RAY MONITORING OF THE TeV BINARY LS I+61 303 WITH THE ROSSI X-RAY TIMING EXPLORER
    Smith, A.
    Kaaret, P.
    Holder, J.
    Falcone, A.
    Maier, G.
    Pandel, D.
    Stroh, M.
    ASTROPHYSICAL JOURNAL, 2009, 693 (02) : 1621 - 1627
  • [28] LONG-TERM MONITORING OF THE HIGH-ENERGY γ-RAY EMISSION FROM LS I+61°303 AND LS 5039
    Hadasch, D.
    Torres, D. F.
    Tanaka, T.
    Corbet, R. H. D.
    Hill, A. B.
    Dubois, R.
    Dubus, G.
    Glanzman, T.
    Corbel, S.
    Li, J.
    Chen, Y. P.
    Zhang, S.
    Caliandro, G. A.
    Kerr, M.
    Richards, J. L.
    Max-Moerbeck, W.
    Readhead, A.
    Pooley, G.
    ASTROPHYSICAL JOURNAL, 2012, 749 (01)
  • [29] Hour time-scale QPOs in the X-ray and radio emission of LS I+61°303
    Noesel, S.
    Sharma, R.
    Massi, M.
    Cimo, G.
    Chernyakova, M.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2018, 476 (02) : 2516 - 2521
  • [30] MULTIWAVELENGTH OBSERVATIONS OF THE TeV BINARY LS I+61° 303 WITH VERITAS, Fermi-LAT, AND Swift/XRT DURING A TeV OUTBURST
    Aliu, E.
    Archambault, S.
    Behera, B.
    Berger, K.
    Beilicke, M.
    Benbow, W.
    Bird, R.
    Bouvier, A.
    Bugaev, V.
    Cerruti, M.
    Chen, X.
    Ciupik, L.
    Connolly, M. P.
    Cui, W.
    Dumm, J.
    Falcone, A.
    Federici, S.
    Feng, Q.
    Finley, J. P.
    Fortin, P.
    Fortson, L.
    Furniss, A.
    Galante, N.
    Gillanders, G. H.
    Griffin, S.
    Griffiths, S. T.
    Grube, J.
    Gyuk, G.
    Hanna, D.
    Holder, J.
    Hughes, G.
    Humensky, T. B.
    Kaaret, P.
    Kertzman, M.
    Khassen, Y.
    Kieda, D.
    Krennrich, F.
    Lang, M. J.
    Maier, G.
    Majumdar, P.
    McArthur, S.
    McCann, A.
    Moriarty, P.
    Mukherjee, R.
    de Bhroithe, A. O'Faolain
    Ong, R. A.
    Otte, A. N.
    Park, N.
    Perkins, J. S.
    Pohl, M.
    ASTROPHYSICAL JOURNAL, 2013, 779 (01)
1234