Apsidal precession of the outer solar planetary orbits due to the pioneer anomaly |
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| Institution: | 1. Department of Physics, & Centre for Theoretical Studies, IIT Kharagpur, Pin: 721302, India;2. National Centre For Radio Astrophysics, Post Bag 3, Ganeshkhind, Pune 411007, India;3. Department of Physics, Indian Institute of Science, Bangalore 560012, India;4. Department of Physics and Meteorology & Centre for Theoretical Studies, IIT Kharagpur, 721302 India;5. Department of Physics, Jadavpur University, Kolkata 700032, India;6. Dept of Physics and Astronomy, University of the Western Cape, Robert Sobukwe Road, Bellville 7535, South Africa;7. SKA SA, The Park, Park Road, Pinelands 7405, South Africa;8. Department of Physics, IIT (BHU), Varanasi 221005, India;1. Department of Astronomy, Nanjing University, Nanjing, Jiangshu 210000, China;2. College of Electronic and Communication Engineering, Hainan Tropical Ocean University, Sanya 572022, China;3. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;1. Department of Mathematics, Gauhati University, Guwahati-14, India;2. Department of Mathematics, A.D.P. College, Nagaon-02, India;1. Department of Physics, V V College of Engineering, Tirunelveli, 627 657 India;2. Department of Physics, VVV College for Women, Virudhunagar, 626 001 India;3. Research and Development Centre, Bharathiar University, Coimbatore, 641 046 India;4. Physics Research Centre, VHNSN College, Virudhunagar, 626 001 India |
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| Abstract: | Despite the now common position that the Pioneer anomaly is not a real gravitational effect but an effect due to the on-board thermal recoil forces – for curiosity’s sake, we here take the suggestion of Nyambuya (2015) where it has been assumed that the Pioneer anomaly – can, in-principle, be attributed to a gravitational effect due to these spacecrafts accreting some material from a rarefied Interplanetary Medium (IPM) in the domain where the Pioneer anomaly has manifested 20 AU ? r ? 70 AU]. If this assumption is correct, then, the expected Pioneer acceleration of these spacecrafts maybe much smaller than the Pioneer acceleration to cause as noticeable apsidal precession of the outer Solar planets Uranus, Neptune and Pluto, thus making it difficult to rule-out a gravitational origin of the Pioneer anomaly. |
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