Search Publications
A neutrino model fit to the CMB power spectrum
Shanks, T.; Johnson, R. W. F.; Schewtschenko, J. A. +1 more
The standard cosmological model, Λ cold dark matter (ΛCDM), provides an excellent fit to cosmic microwave background (CMB) data. However, the model has well-known problems. For example, the cosmological constant, Λ, is fine-tuned to 1 part in 10100 and the CDM particle is not yet detected in the laboratory. Shanks previously investigate…
Rosetta rendezvous with comet following 10-year chase
Commissariat, Tushna
The European Space Agency’s Rosetta mission has become the first spacecraft to rendezvous with a comet.
Neutrino mass scale in the era of precision cosmology
Gerbino, M.
In this work, we study how recent cosmological datasets in combination with particle physics results are able to constrain the neutrino mass scale. In particular, we present current bounds on the electron neutrino mass mβ, the effective Majorana mass mββ and the total neutrino mass Σmv and we discuss the sensitivit…
Long term optical variability of bright X-ray point sources in elliptical galaxies
Shalima, P.; Jithesh, V.; Jeena, K. +3 more
We present long term optical variability studies of bright X-ray sources in four nearby elliptical galaxies with the Chandra Advanced CCD Imaging Spectrometer array (ACIS-S) and observations from the Hubble Space Telescope (HST) Advanced Camera for Surveys. Out of the 46 bright (X-ray counts > 60) sources that are in the common field of view of…
Mid- and far-infrared variability of PV Cep
Larionov, V. M.; Arkharov, A. A.; Di Paola, A. +4 more
We present the collection of all the mid- and far-IR observations (λ=3–170 µm) of the young eruptive variable PV Cep available so far in the literature. These data allow us to confirm that flux variability is a prominent feature at mid-IR wavelength (λ=3–25 µm). Color-magnitude plots clearly indicate that the observed variability is no…
MAVEN turns to COMET Siding Spring
Wickramasinghe, Chandra; Smith, William E.
2014-10-14 : Just 5 days to go to Mars Obiter MAVEN turning from MARS to observe Comet Siding Spring. A short summary video is well worth watching http://youtu.be/AwMjoy_02Ic It should be noted that unlike short-period Comets Halley and 67P/G-C (Rosetta target) which are short period Comets (75 years and 7 years respectively), Comet Siding Spring …
Hinode 7: Conference summary and future suggestions
Priest, Eric
This conclusion to the seventh Hinode science meeting (2013 November in Takayama, Japan) attempts to summarise what we have learnt during the conference (mainly from the review talks) about new observations from Hinode and about theories stimulated by them. Suggestions for future study are also offered.
Relating in situ gas measurements to the surface outgassing properties of cometary nuclei
Thomas, N.; Finklenburg, S.
The sensitivity of the gas flow field to changes in different initial conditions has been studied for the case of a highly simplified cometary nucleus model. The nucleus model simulated a homogeneously outgassing sphere with a more active ring around an axis of symmetry. The varied initial conditions were the number density of the homogeneous regi…
Looking closer at the Sun
Harra, Louise K.
Publisher's Erratum to: The Herschel PACS photometer calibration. A time dependent flux calibration for the PACS chopped point-source photometry AOT mode
Sauvage, Marc; Okumura, Koryo; Linz, Hendrik +7 more