Seasonal changes of the volatile density in the coma and on the surface of comet 67P/Churyumov-Gerasimenko

被引：35
作者：
Kramer, Tobias [1 ,2 ]
Laeuter, Matthias [1 ]
Rubin, Martin [3 ]
Altwegg, Kathrin [3 ]
机构：
[1] Zuse Inst Berlin, D-14195 Berlin, Germany
[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[3] Univ Bern, Space Res & Planetary Sci, CH-3012 Bern, Switzerland
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2017年 / 469卷
基金：
瑞士国家科学基金会;
关键词：
methods: analytical; methods: data analysis; methods: numerical; comets: general; comets: individual: 67P/Churyumov-Gerasimenko; ROSETTA; DUST;
D O I：
10.1093/mnras/stx866
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Starting from several monthly data sets of Rosetta's COmetary Pressure Sensor, we reconstruct the gas density in the coma around comet 67P/Churyumov-Gerasimenko. The underlying inverse gas model is constructed by fitting ten thousands of measurements to thousands of potential gas sources distributed across the entire nucleus surface. The ensuing self-consistent solution for the entire coma density and surface activity reproduces the temporal and spatial variations seen in the data for monthly periods with Pearson correlation coefficients of 0.93 and higher. For different seasonal illumination conditions before and after perihelion, we observe a systematic shift of gas sources on the nucleus.
引用
收藏
页码：S20 / S28
页数：9
相关论文
共 50 条
  • [1] Ejection and dynamics of aggregates in the coma of comet 67P/Churyumov-Gerasimenko
    Lemos, P.
    Agarwal, J.
    Marschall, R.
    Pfeifer, M.
    ASTRONOMY & ASTROPHYSICS, 2024, 687
  • [2] Rotating dust particles in the coma of comet 67P/Churyumov-Gerasimenko
    Fulle, M.
    Ivanovski, S. L.
    Bertini, I.
    Gutierrez, P.
    Lara, L.
    Sierks, H.
    Zakharov, V.
    Della Corte, V.
    Rotundi, A.
    Barbieri, C.
    Lamy, P. L.
    Rodrigo, R.
    Koschny, D.
    Rickman, H.
    Keller, H. U.
    Agarwal, J.
    A'Hearn, M. F.
    Barucci, M. A.
    Bertaux, J. -L.
    Bodewits, D.
    Cremonese, G.
    Da Deppo, V.
    Davidsson, B.
    Debei, S.
    De Cecco, M.
    Fornasier, S.
    Groussin, O.
    Guettler, C.
    Hviid, S. F.
    Ip, W.
    Jorda, L.
    Knollenberg, J.
    Kramm, R.
    Kuehrt, E.
    Kueppers, M.
    Lazzarin, M.
    Lopez-Moreno, J. J.
    Marzari, F.
    Michalik, H.
    Naletto, G.
    Oklay, N.
    Sabau, L.
    Thomas, N.
    Tubiana, C.
    Vincent, J. -B.
    Wenzel, K. -P.
    ASTRONOMY & ASTROPHYSICS, 2015, 583
  • [3] Current sheets in comet 67P/Churyumov-Gerasimenko's coma
    Volwerk, M.
    Jones, G. H.
    Broiles, T.
    Burch, J.
    Carr, C.
    Coates, A. J.
    Cupido, E.
    Delva, M.
    Edberg, N. J. T.
    Eriksson, A.
    Goetz, C.
    Goldstein, R.
    Henri, P.
    Madanian, H.
    Nilsson, H.
    Richter, I.
    Schwingenschuh, K.
    Wieser, G. Stenberg
    Glassmeier, K. -H.
    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2017, 122 (03) : 3308 - 3321
  • [4] Airfall on Comet 67P/Churyumov-Gerasimenko
    Davidsson, Bjorn J. R.
    Birch, Samuel
    Blake, Geoffrey A.
    Bodewits, Dennis
    Dworkin, Jason P.
    Glavin, Daniel P.
    Furukawa, Yoshihiro
    Lunine, Jonathan, I
    Mitchell, Julie L.
    Nguyen, Ann N.
    Squyres, Steve
    Takigawa, Aki
    Vincent, Jean-Baptiste
    Zacny, Kris
    ICARUS, 2021, 354
  • [5] Electron acceleration at comet 67P/Churyumov-Gerasimenko
    Goldstein, R.
    Burch, J. L.
    Llera, K.
    Mokashi, P.
    Nilsson, H.
    Dokgo, K.
    Eriksson, A.
    Odelstad, E.
    Richter, I
    ASTRONOMY & ASTROPHYSICS, 2019, 630
  • [6] Cold and warm electrons at comet 67P/Churyumov-Gerasimenko
    Eriksson, A. I.
    Engelhardt, I. A. D.
    Andre, M.
    Bostrom, R.
    Edberg, N. J. T.
    Johansson, F. L.
    Odelstad, E.
    Vigren, E.
    Wahlund, J. -E.
    Henri, P.
    Lebreton, J. -P.
    Miloch, W. J.
    Paulsson, J. J. P.
    Wedlund, C. Simon
    Yang, L.
    Karlsson, T.
    Jarvinen, R.
    Broiles, T.
    Mandt, K.
    Carr, C. M.
    Galand, M.
    Nilsson, H.
    Norberg, C.
    ASTRONOMY & ASTROPHYSICS, 2017, 605
  • [7] Spin and activity of comet 67P/Churyumov-Gerasimenko
    Vincent, J. -B.
    Lara, L. M.
    Tozzi, G. P.
    Lin, Z. -Y.
    Sierks, H.
    ASTRONOMY & ASTROPHYSICS, 2013, 549
  • [8] Geomorphology of comet 67P/Churyumov-Gerasimenko
    Birch, Samuel P. D.
    Tang, Y.
    Hayes, A. G.
    Kirk, R. L.
    Bodewits, D.
    Campins, H.
    Fernandez, Y.
    Bart, R. de Freitas
    Kutsop, N. W.
    Sierks, H.
    Soderblom, J. M.
    Squyres, S. W.
    Vincent, J-B.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 469 : S50 - S67
  • [9] Dust in comet 67P/Churyumov-Gerasimenko
    Moreno, F
    Lara, LM
    Muñoz, O
    López-Moreno, JJ
    Molina, A
    ASTROPHYSICAL JOURNAL, 2004, 613 (02) : 1263 - 1269
  • [10] Plasma density structures at comet 67P/Churyumov-Gerasimenko
    Engelhardt, I. A. D.
    Eriksson, A., I
    Wieser, G. Stenberg
    Goetz, C.
    Rubin, M.
    Henri, P.
    Nilsson, H.
    Odelstad, E.
    Hajra, R.
    Vallieres, X.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2018, 477 (01) : 1296 - 1307
12345