[Shape-univ] INTEGRAL/SPI: first 511keV-photograph of dark matter halo?

[Boud Roukema]

witam

Kn\"odlseder et al. (2005) seems to be the main "discovery" article of
the INTEGRAL/SPI results.

It has some very nice pictures - especially Figs 4, 5 and 7 - here i've
put the closed links, but the figures are in the astro-ph versions too,
of course:

Fig 4
http://www.edpsciences.org/articles/aa/full/2005/38/aa2063-04/img62.gif

Fig 5
http://www.edpsciences.org/articles/aa/full/2005/38/aa2063-04/img63.gif

Fig 7
http://www.edpsciences.org/articles/aa/full/2005/38/aa2063-04/img108.gif

We may soon be able to say that Fig.~4 was the "first picture of
invisible matter" ;).


Ascasibar et al 2005 has some very interesting conclusions - apart from
the continued validity of LDM as only (so far) viable explanation, they say:

>  One consequence is that the value of the fine structure constant \alpha
> should differ from that recommended in the CODATA (Committee on Data
> for Science and Technology). This is a very strong test for the LDM
> scenario and an additional motivation in favour of experiments
> measuring \alpha directly. Our results finally indicate that an accurate
> measurement of the shape of the dark halo profile could have a
> tremendous impact on the determination of the origin of the 511-keV
> line and vice versa.

Both of these are very good for showing that evidence should build up either
for or against the LDM hypothesis. :)

pozdr
boud


Kn\"odlseder et al. (2005)
http://arXiv.org/abs/astro-ph/0506026
http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?bibcode=2005A%26A...441..513K&db_key=AST

Ascasibar, Y et al. (2005)
http://arXiv.org/abs/astro-ph/0507142
http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?bibcode=2006MNRAS.368.1695A&db_key=AST