Where Can I Find Mass Profiles of Galaxy Clusters for Gravity Research?

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SUMMARY

The discussion focuses on obtaining mass profiles of galaxy clusters for gravity research, specifically through gravitational lensing measurements. Key authors to reference include Treu, Brewer, Marshall, Bartelmann, Clowe, and Braduc, who have contributed significantly to this field. The discussion highlights the absence of large public catalogs of lens profiles due to the complexity of the modeling process. A recommended paper on weak lensing, found at arxiv.org, may provide relevant insights for the research project.

PREREQUISITES
  • Understanding of gravitational lensing techniques
  • Familiarity with mass density profiles in astrophysics
  • Knowledge of modified theories of gravity
  • Experience with academic research methodologies
NEXT STEPS
  • Search for papers by authors Treu, Brewer, Marshall, Bartelmann, Clowe, and Braduc on ADS
  • Investigate the methodology of gravitational lensing and its applications in astrophysics
  • Explore the implications of weak lensing as discussed in the paper at arxiv.org
  • Contact authors of relevant papers for raw data on reconstructed profiles
USEFUL FOR

Undergraduate researchers, astrophysicists, and anyone studying gravitational lensing and its implications for modified theories of gravity will benefit from this discussion.

Mosis
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I'm doing an undergraduate research project this term on some modified theories of gravity, and I need some mass/density profiles. Does anyone know any papers that give mass profiles of galaxy clusters determined predominantly through gravitational lensing measurements? The model I'm working with does not change propagation of light (from that predicted by GR) but it does affect motion of massive objects (by changing the effective potential they see), so to test it self-consistently, I need data that was not determined via Newtonian dynamics (e.g. galaxy rotation curve data isn't very useful).

Thanks!
 
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There are plenty of papers, if you head over to http://adsabs.harvard.edu/abstract_service.html" and search for papers by some of the following authors that should get you started, then play follow the citations...

Treu, T.
Brewer, B.
Marshall, P.
Bartelmann, M.
Clowe, D.
Braduc, M.

That's just a random sample of some lensing people that came to mind, let me know if you don't find what you are after.

As a brief comment, I don't think there are any large catalogues of lens profiles as measured by strong lensing that are public, simply because the process is tricky and highly dependent on how you model various aspects (such as assuming a functional form for for the lens mass profile and/or the source light profile). Entire papers are usuallly devoted to re-constructing single systems. None the less there are plenty of results out there and based on what you find, talking to some of the authors of papers might be a good way to get some of the reconstructed profiles in a raw form (i.e. rather than reading from a plot in a paper).

By the way, given the description of your project, you might find http://arxiv.org/abs/0909.3853" recent paper interesting. It using weak lensing (rather than the strong lensing type approach you are talking about) to look at what appears to be a similar kind of gravity model, based on your description. The results are very interesting, although I have some serious doubts about the methodology. None the less it is clearly a hot topic.

Good luck with your project!
 
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