witam cosmo-torun
* circular polarisation from synchrotron processes?
Kennett & Melrose, 1998, PASA, 15, 211
http://www.atnf.csiro.au/pasa/15_2/kennett/paper/node3.html
> In some sources it may be that the relativistic
> particles are electron-positron pairs (e.g., Wilson &
> Weiler 1997). Electrons and positrons contribute with
> the same sign to the linearly polarized component and
> with the opposite sign to the circularly polarized
> component. If the distributions of electrons and
> positrons are the same the wave modes can have no
> circular component and, more importantly, the intrinsic
> circular polarization from the synchrotron radiation
> sums to zero.
So if we have different distributions of electrons and
positrons, then we get a circular polarisation component.
i'm sure there must be more basic texts on this subject...
pozdr
boud
hi all
some interesting announcements
pozdr
boud
>
> ---------- Forwarded message ----------
> Date: Thu, 26 Mar 2009 16:46:49 +0100
> From: Programme National de Cosmologie et Galaxies <pncg iap.fr>
> To: Programme National de Cosmologie et Galaxies <pncg iap.fr>
> Subject: Diffusion PNCG, mess. n° 6
>
> PNCG - Message n° 6 - 26 mars 2009
>
> 1. Oxford Physics Department 2 Jobs Advert
>
> 2. NAM/JENAM 2009 : Epoch of Reionisation Session
>
> 3. Blois 2009
>
> 4. Santa Fe Cosmology Summer Workshop for 2009
>
> 5. Summer School in Statistics for Astronomers, June 1-6, 2009
>
> -----------------------------------------------------------------------
> 1. Oxford Physics Department 2 Jobs Advert
>
> Please visit http://www.physics.ox.ac.uk/jobs/ to view this.
>
> *1* Vacancy Title: Post-doctoral Researchers in OBSERVATIONAL COSMOLOGY
> within Astrophysics
>
> Reference Number: DB09005
>
> Job Description: The Department of Physics invites applications for one
> or more post-doctoral positions in observational cosmology.
>
> The observational cosmology programme at Oxford includes: the analysis
> of surveys for type Ia supernovae; analysis of large-area surveys of
> weak gravitational lensing incorporating photometric redshift estimation;
> and the design and implementation of upcoming redshift surveys to measure
> baryonic oscillations. We especially welcome applications from candidates
> interested in working on any of these projects.
>
> The post-holder will have the opportunity to engage in teaching for up
> to 3 hours per week during term. The starting salary is from £28,839
> to £38,757 pa depending on skills and experience. A benefits package
> and a research budget for travel and other expenses will be provided.
> Appointments will be for two years in the first instance, extendable
> to three years. Appointments would start on 1 May 2009 or later.
>
> Further particulars are available from
> http://www.physics.ox.ac.uk/astro/jobs/
> Applicants should send a statement of research interests,
> curriculum vitae, list of publications (one file only in pdf),
> and the names and addresses of three referees by the closing date
> of 31 March 2009, quoting reference DB09005. Email submission is
> preferred. Please ensure that the reference number DB09005 is
> included in the subject title. In addition candidates should arrange
> for letters from the referees to be sent to sec astro.ox.ac.uk by the
> closing date. Interviews are expected to be held shortly after.
>
>
> The University is an equal opportunity employer
>
>
> Anyone who thinks they may be interested in the job is encouraged
> to talk to Vanessa Ferraro-Wood (or email: sec astro.ox.ac.yuk) about it.
>
> The application deadline is 31/03/2009
>
>
> *2* Vacancy Title: Postdoctoral Researcher in Theoretical Cosmology
> (Fixed Term) within Astrophysics
>
> Reference Number: DB09006
>
> Job Description: We invite applications for a postdoctoral research
> position starting 1 October, 2009 to work in the area of Theoretical
> Cosmology for one year in the first instance, with the possibility of
> extending to 3 years. There will be a particular focus on cosmic
> microwave background anisotropy and interpretation of data from the
> Atacama Cosmology Telescope and the Planck satellite. The successful
> candidate is likely to have experience in analysis of cosmological data
> and be capable of initiating research in a lively group with significant
> interaction between theory and observation. The candidate will work
> primarily with Joanna Dunkley, but will be encouraged to interact with
> other faculty members and to carry out independent research.
>
> Oxford Astrophysics offers a stimulating research environment, with a
> large number of faculty in cosmology, including theoretical (Pedro
> Ferreira, Joe Silk, Adrianne Slyz), observational (Richard Ellis, Steve
> Rawlings, Isobel Hook, Lance Miller) and experimental (Mike Jones,
> Ghassan Yassin, Gavin Dalton).
>
>
> Anyone who thinks they may be interested in the job is encouraged to
> talk to Dr Joanna Dunkley (or email: j.dunkley1 physics.ox.ac.uk) about
> it.
>
>
> The application deadline is 31/03/2009
>
>
> -----------------------------------------------------------------------
> 2. NAM/JENAM 2009 : Epoch of Reionisation Session
>
> As part of the 2009 UK National Astronomy Meeting & the Joint European
> National Astronomy Meeting at the University of Hertfordshire
> (www.jenam2009.eu) there will be a parallel session on
>
> "Epoch of reionisation:
> first light to the earliest galaxies currently known"
>
> on Monday 20th April 2009.
> Please see www.jenam2009.eu/default.asp?ContentID=1327
> for more information.
>
> We would welcome submission of abstracts for this session by the
> deadline on Monday March 9th.
>
> Registration and abstract submission is available at
> www.jenam2009.eu/cmsapps/jenam_conference_reg/
> confreg2.asp?userid=0&confid=4&contentid=1329
>
> -----------------------------------------------------------------------
> 3. Blois 2009
>
> The XXIth Rencontres de Blois entitled "Windows on the Universe"
> will be held from June 21st to June 26th, 2009
> in the Château de Blois, Loire Valley, France.
>
> This series, started in 1989 with the celebration of the
> 25th anniversary of the discovery of CP violation, is a
> high level cross disciplinary conference series which is
> organized every year in May or June in the beautiful
> Renaissance castle of Blois.
>
> This year will be the 20th anniversary of this series of
> conferences; moreover, 2009 has also been tagged as the
> "World year of astronomy".
> To celebrate these two events, 7 Nobel laureates : J.Cronin,
> R. Giacconi, D. Gross, M. Perl, G. Smoot, J. Steinberger,
> J. Taylor and many other well known scientists have accepted
> our invitation to attend and give a lecture.
>
> Registration and abstract submission for parallel session talks
> are open at http://blois.in2p3.fr
>
> -----------------------------------------------------------------------
> 4. Santa Fe Cosmology Summer Workshop for 2009
>
> The next of our continuing series of Santa Fe Cosmology Summer workshops
> will be held in Santa Fe, New Mexico from July 6 to July 24, 2009.
> The workshop series is sponsored by Los Alamos National Laboratory and
> by the Kavli Institute for Cosmological Physics at the University of
> Chicago. The venue is the campus of St. John's College, a small liberal
> arts college that provides both a pleasant ambiance and convenient access
> to Santa Fe.
>
> The aim of the Santa Fe workshops is to bring together physicists and
> astrophysicists with interests in structure formation, the cosmic
> microwave background, and the early universe. Typically, a large
> portion of the time is devoted to discussion, with formal or informal
> talks as needed to introduce such discussion. Attendance is limited
> to about 80 participants to encourage this informality. We also
> encourage attendance by a number of graduate students and junior
> researchers, so they can be exposed to forefront research and interact
> with leaders in the field. We therefore ask you to bring this meeting
> to the attention of exceptional students and postdocs.
>
> This year, the first two weeks will follow our standard workshop
> format, while the third week will be a focused workshop on weak
> lensing. Details on third week activities will be available shortly.
>
> There will be no registration fee and highly subsidized housing will
> be provided (the precise cost estimates will be available soon, but
> are typically $150/week, less for students). Travel support will not
> be available.
>
> To register for the meeting and to make suggestions for the scientific
> program, go to the Workshop website at
>
> http://www.lanl.gov/projects/cosmology/sf09/
>
> We will be filling spaces on a rolling basis, so you are strongly
> advised to register as soon as possible, and preference will be given
> to those who register before April 08, 2009.
>
> -----------------------------------------------------------------------
> 5. Summer School in Statistics for Astronomers, June 1-6, 2009
>
> First Announcement
>
> Summer School in Statistics for Astronomers V
> June 1-6, 2009
> Penn State University
> http://astrostatistics.psu.edu/su09/
>
> The fifth annual Penn State Summer School in Statistics for
> Astronomers will be held at Penn State. This is a 6-day course
> in fundamental statistical inference designed to provide
> physical scientists, particularly young researchers in astronomy,
> with a strong conceptual foundation in modern statistics and to
> develop a repertoire of well-established techniques applicable
> to observational astronomy. Classroom instruction is interspersed
> with hands-on analysis of astronomical data using the public-domain
> R software package. The course is taught by a team of statistics
> and astronomy professors with opportunity for discussion of
> methodological issues.
>
> Statistical techniques covered include:
>
> * exploratory data analysis
> * hypothesis testing and parameter estimation
> * regression & confidence interval estimation
> * model selection & goodness-of-fit
> * maximum likelihood methods & Bayes' Theorem
> * non-parametric methods
> * Monte Carlo methods
> * Poisson processes
> * time series analysis
>
> INTERESTED PARTICIPANTS SHOULD REGISTER AT
> http://astrostatistics.psu.edu/su09/reg.html
> REGISTRATION DEADLINE: May 1, 2009
> (or when the enrollment limit reaches)
> REGISTRATION FEE: $250.
>
> The 2009 Summer School is organized by Penn State University's
> Center for Astrostatistics. It will be modeled on the last four Penn
> State Summer Schools and the 2008 Indian Institute of Astrophysics-
> Penn State Summer School. See http://astrostatistics.psu.edu/
> for past lecture notes. This Web site
> http://astrostatistics.psu.edu/su09/
> also gives information on travel, lodging, and visas.
>
