Conference on

The Pioneer Anomaly

- Observations, Attempts at Explanation, Further Exploration -

ZARM, Bremen 18. - 19. May 2004

Objective

Time and Place

Organization

Fees

Schedule + Talks

Participants

Travel

Sponsors

Literature

Pictures

 

Objective:

Recently, the observation of an anomalous behaviour of massive bodies in weak gravitational fields attracted some interest. The most prominent example is the Pioneer anomaly. Another example concerns the rotation curves of galaxies. On the phenomenological side this behaviour has been related, e.g., on a phenomenological level, to a theory with a modified Newtonian dynamics (MOND theory) or, on a more fundamental level, to a bi-metric theory. Also its relation to dark matter and dark energy has been discussed.
In this meeting the status of this area and possible approaches for further exploration and clarification will be discussed.


Time and Place:

Begin: Tuesday, 18. May 2004 at 9:45
End: Wednesday, 19. May 2004,

The lectures will be held at
Center for Applied Space Technology and Microgravity (ZARM)
University Bremen
Am Fallturm
28359 Bremen
Germany


Organization:

Lämmerzahl, Claus

ZARM
University of Bremen
Am Fallturm
28359 Bremen
Germany

e-mail: laemmerzahl@zarm.uni-bremen.de
Phone: +49 (0)421 - 218 - 8687
Fax: +49 (0)421 - 218 - 2521


Conference Fees:

We will take conference fees of 30 Euro. We are able to accept credit cards.

These fees cover lunchs, coffe breaks and the conference dinner.


Schedule and Talks:

Monday 17.5.

 

approx. 18:00

Short visit of the City of Bremen

 

19:30

Dinner for those who already arrived

       
Tuesday 18.5.

 

09:45 - 10:00

Lämmerzahl/Dittus

Welcome

 
Overview lectures

 

10:00 - 10:45

Turyshev

The Pioneer effect: History and overview

 

10:45 - 11:45

Nieto

Finding the origin of the Pioneer anomaly

 

11:45 - 12:30

Turyshev

Overview: proposed mechanisms to explain the Pioneer anomaly and missions to test it

 

12:30 - 13:30

Lunch

 
Attempts at explanations

 

13:30 - 14:15

Mashhoon

Attempts at explanations within standard physics

 

14:15 - 14:45

Bertolami

Pioneer anomaly, braneworlds and scalar fields

 

14:45 - 15:15

Rosales

The Pioneer anomaly is just a cosmological Berry phase

 

15:15 - 15:45

Ranada

Pioneer acceleration, light acceleration and time acceleration

 

15:45 - 16:15

coffee break

 
proposed missions

 

16:15 -17:00

Nieto

A proposed mission to verify the Pioneer anomaly

 

17:00 -17:30

Johann

ENIGMA - a mission exploring the Pioneer effect

 

17:30 - 18:00

Rathke

Testing for the Pioneer anomaly on a Pluto-exploration mission

 

18:00 - 18:30

Penanen

Dark Matter Explorer Mission

 

18:30 - 19:00

Ni / Lämmerzahl

Deep space mission ASTROD: MOND and the Pioneer anomaly

 

19:30

Conference Dinner

       
Wednesday 19.5.
 
Detection of forces

 

09:00 - 09:45

Reynaud

Testing Newton force law at short and long distances

 

09:45 - 10:05

Rasel

Atom interferometer based inertial sensors for long term missions?

 

10:05 - 10:25

Bouyer

Atomic interferometry with coherent ensembles

 

10:25 - 11:00

Coffe break

 

11:00 - 11:30

Tucker

Sagnac Revisited: A Spacetime Perspective

 

11:30 - 12:00

Blome

The Cosmological Constant and Non-Newtonian Gravity

 

12:00 - 12:30

Bertolami

ESA Study on Gravity Control and its Influence on Space Propulsion

 

12:30 - 13:30

Lunch

 
Other missions

 

13:30 - 14:00

Turyshev

The LATOR mission

 

14:00 - 14:10

Dachwald

Fast solar system escape missions using non-futuristic solar sails

 

14:10 - 14:40

Turyshev

Cassini measurement of gravitational time delay

 

14:40 - 15:15

Drop-tower tour

 

15:15 - 15:45

Coffe break

 
Fundamental physics at NASA and ESA

 

15:45 - 16:15

Turyshev

NASA Fundamental Physics

 

16:15 - 16:45

de Matos

Perspectives in Fundamental Physics in Space

 

16:45 - 16:55

Reinhard

ESA call: cosmic vision 2015

 

16:55 - 18:30

All

Discussion

 

19:00

Dinner and end of workshop

(subject to changes)


Participants:

Angonin, Marie-Christine (Paris, France)
Bertolami, Orfeu (Lisboa, Portugal)
Blome, Hansjoachim (FH Aachen)
Bordé, Christian (Institute Poincarée, Villetaneuse, France)
Boyer, Philippe (Orsay, France)
Brihaye, Yves (Univ. Mons, Belgium)
Dachwald, Bernd (DLR, Köln, Germany)
Dittus, Hansjörg (ZARM, Univ. Bremen, Germany)
Duif, Chris P. (Delft Univ., The Netherlands)
Genet, Frank (Paris, France)
Hartmann, Betti (International Univ. Bremen, Germany)
Hehl, Friedrich W. (Univ. Köln, Germany)
Johann, Ulrich (Astrium, Friedrichshafen, Germany)
Kent, Barry (Rutherford Appleton Laboratory, Chilton, UK)
Kleihaus, Burkhard (Univ. Oldernburg, Germany)
Kunz, Jutta (Univ. Oldernburg, Germany)
Lämmerzahl, Claus (ZARM, Univ. Bremen, Germany)
Mashhoon, Bahram (University of Missouri-Columbia, USA)
Matos, Clovis de (ESA, Paris, France)
Mehls, Carsten (ZARM, Univ. Bremen, Germany)
Nieto, Michael M. (Los Alamos, USA)
Páramos, Jorge (Lisboa, Portugal)
Penanen, Konstantin (JPL, USA)
Peters, Achim (Humboldt-Univ. Berlin, Germany)
Perlick, Volker (TU Berlin, Germany)
Ranada, Antonio F. (Univ. Madrid, Spain)
Rasel, Ernst M. (Institute for Quantum Optics, Univ. Hannover, Germany)
Rathke, Andreas (ESA, Noordvijk, The Netherlands)
Reinhard, Rüdeger (ESA, Noordvijk, The Netehrlands)
Reynaud, Serge (Univ. Paris VI, France)

Rosales, Jose Luis ( Madrid, Spain)
Schäfer, Gerhard (Univ. Jena, Germany)
Schalinski, Cornelius (OHB Systeme, Bremen, Germany)

Scheithauer, Silvia (ZARM, Univ. Bremen, Germany)
Schleicher, Alexander (ZARM, Univ. Bremen, Germany)
Seboldt, Wolfgang (DLR, Köln, Germany)
Selig, Hanns (ZARM, Univ.
Bremen, Germany)
Theil, Stephan (ZARM, Univ.
Bremen, Germany)
Touboul, Pierre (ONERA, Paris, France)
Tucker, Robin (Univ Lancaster, UK)
Turyshev, Slava G. (JPL, USA)

 


Travel:

There are good connections between Bremen airport and the international airports Frankfurt and Amsterdam.

Travel from the airport to Hotel Horner Eiche: Take tram No 6 (direction ''University'') to main train station, change there to tram No 4 (direction ''Borgfeld''), get off the tram at stop ''Kopernikusstrasse'' (15 stops after main station), then 2 minutes by foot to the hotel. The tram ticket costs 1.95 Euro. [Last tram at 23:44.]

From main station to hotel: take tram No 4 (direction ''Borgfeld'') and get off the tram at stop ''Kopernikusstrasse'' (15th stop), then 2 minutes by foot to the hotel. The tram ticket costs 1.95 Euro. [Last tram at 0:30.]

Web page of Hotel Horner Eiche.

Here is the travel information about how to arrive at ZARM.

From Hotel Horner Eiche there is a public bus to ZARM (bus No 32). The bus stop is in front of the hotel. The single fare is 80 Euro-cents.

Here is a map showing the location of the Hotel Horner Eiche and the Bremen Drop Tower (ZARM). This is in the north of Bremen. The distance between the Hotel and the ZARM is about 2 km.

      

 


Sponsors:

This meeting is sponsored by EADS Astrium and ZARM.

                      


Literature:

On the observation

  1. J.D. Anderson, P.A. Laing, E.L. Lau, A.S. Liu, M.M. Nieto, and S.G. Turyshev: Study of the anomalous acceleration of Pioneer 10 and 11, Phys. Rev. D 65, 082004 (2002).
  2. J.D. Anderson, P.A. Laing, E.L. Lau, A.S. Liu, M.M. Nieto, and S.G. Turyshev: Indication, from Pioneer 10/11, Galileo, and Ulysses data, of an apparent anomalous, weak, long-range acceleration, Phys. Rev. Lett. 81, 2858 (1998). [Comment by J.I. Katz: Phys. Rev. Lett. 83, 1892 (1999); Reply: Phys. Rev. Lett. 83, 1893 (1999)].

Attempts at explanations within standard physics

  1. A.F. Ranada: The Pioneer anomaly as acceleration of the clocks, gr-qc/0410084.
  2. Y.G. Yi: On the indication from Pioneer 10/11 data of an apparent anomalous, weak, long-range acceleration, Gen. Rel. Grav. 36, 875 (2004).
  3. D. Bini, C. Cherubini, and B. Mashhoon: Vacuum C-Metric and the Gravitational Stark Effect, Phys. Rev. D 70, 044020 (2004) [gr-qc/0401071].
  4. J.L. Rosales: The Pioneer's Anomalous Doppler Drift as a Berry Phase, gr-qc/0401014.
  5. J.D. Anderson and B. Mashhoon: Pioneer Anomaly and the Helicity-Rotation Coupling, Phys. Lett. A 315, 199 (2003).
  6. M.M. Nieto and S.G. Turyshev: Finding rhe origin of the Pioneer anomaly, gr-qc/0308017.
  7. L.K. Scheffer: Conventional forces can explain the anomalous acceleration of Pioneer 10, Phys. Rev. D 67, 084021 (2003).
  8. J.-L. Rosales, and J.-L. Sanchez--Gomez: The 'Pioneer effect' as a manifestation of the cosmic expansion in the solar system, gr-qc/9810085.
    J.L. Rosales: The Pioneer's acceleration anomaly and Hubble's constant, gr-qc/0212019.
  9. J.D. Anderson, E.L. Lau, S.G. Turyshev, et al.: Search for a standard explanation of the pioneer anomaly, Mod. Phys. Lett. A 17, 875 (2002).
  10. L. Licht: The Expanding Universe, Planetary Motion and the Pioneer 10/11 Anomaly, gr-qc/0102103.

Phenomenology

  1. J.D. Bekenstein: Relativistic gravitation theory for the MOND paradigm, astro-ph/0403694.
  2. M. Milgrom: MOND - theoretical aspects, New Astr. Rev. 46, 741 (2002).
  3. D. Ostvang: An explanation of the 'Pioneer effect' based on quasi-metric relativity, Class. Quantum Grav. 19, 4131 (2002).

Attempts at explanations with ''new physics''

  1. K. Krogh: Origin of the Blueshift in Signals from Pioneer 10 and 11, astro-ph/0409615
  2. R. Foot: Implications of the DAMA and CRESST experiments for mirror matter-type dark matter, Phys. Rev. D 69, 036001 (2004).
  3. K. Trencevski: Hubble red shift and the anomalous acceleration of Pioneer 10 and 11, gr-qc/0402024
  4. J.W. Moffat: Modified Gravitational Theory and the Pioneer 10 and 11 Spacecraft Anomalous Acceleration, gr-qc/0405076.
  5. A.F. Ranada: On the Pioneer acceleration as light acceleration, gr-qc/0403013.
  6. A.F. Ranada: The light speed and the interplay of the quantum vacuum, the gravitation of all the universe and the fourth Heisenberg relation, Int. J. Mod. Phys. D 12, 1755 (2003).
  7. M. Cadoni: An Einstein-like theory of gravity with a non-Newtonian weak-field limit, gr-qc/0312054.
  8. O. Bertolami, J. Páramos: The Pioneer anomaly in a bimetric theory of gravity on the brane, gr-qc/0310101.
  9. A.F. Ranada: The Pioneer riddle, the quantum vacuum and the acceleration of light, Europhys. Lett. 63, 653 (2002).
  10. M.A. Ivanov: Non-Dopplerian cosmological redshift parameters in a model of graviton-dusty universe, Class. Quantum Grav. 19, 1351 (2002).
  11. J.Q. Shen: Gravitational analogues, geometric effects and gravitomagnetic charge,Gen. Rel. Grav. 34, 1423 (2002).
  12. M.A. Ivanov: Possible manifestations of the graviton background, Gen. Rel. Grav. 33,: 479 (2001).
  13. R. Foot, R. R. Volkas: A mirror world explanation for the Pioneer spacecraft anomalies?, Phys.Lett. B 517, 13 (2001).
  14. E. Schmutzer: Distribution of Dark Matter around a Central Body, Pioneer Effect and Fifth Force, Astronom. Nachr. 322, 93 (2001).
  15. Dag Østvang: An Explanation of the "Pioneer Effect" based on Quasi-Metric Relativity, Class.Quant.Grav. 19, 4131 (2002).
  16. G. Modanese: Effect of a scale-dependent cosmological term on the motion of small test particles in a Schwarzschild background, Nucl.Phys. B 556, 397 (1999).

Proposals for new missions

  1. J.D. Anderson, M.M. Nieto, M.M. and S.G. Turyshev: A Mission to test the Pioneer Anomaly, Int. J. Mod. Phys. D 11, 1545 (2002).
  2. J.L. Rosales: The Pioneer anomalous acceleration: a measurement of the cosmological constant at the scale of the solar system, gr-qc/0307042.
  3. O.,Bertolami and M. Tajmar: Gravity Control and Possible Influence on Space Propulsion: A Scientific Study, ESA CR(P)4365.Lett. A 315, 199 (2003).
  4. O. Bertolami and M. Tajmar: Hypothetical Gravity Control and Implications for Spacecraft Propulsion, gr-qc/0207123

Some pictures from Bremen

ZARM with Drop tower
(146 m)

 

 

 

City Hall

 

 

Market square with "Roland"

residential area

downtown Bremen

The Bremen flag.

This flag has its origin in the middle ages. The red and white stripes symbolize the liberty of the citizens of Bremen. It is told that the American flag is modeled on this flag.

areal view

 

Bremen town musicians

Windmill in downtown Bremen

 

 

Typical countryside architecture

Some more information on Bremen can be found on http://en.wikipedia.org/wiki/Bremen

 

Welcome to Bremen!