 
                    
                
Nicolaus Copernicus Astronomical Center invites applications for astronomy and astrophysics PhD studies
The  Nicolaus Copernicus Astronomical Center (CAMK PAN), a leading institute  of the GeoPlanet Doctoral School, offers the opportunity to carry out  graduate studies leading to a PhD degree in astronomy. The PhD studies  are related to subjects pursued at CAMK PAN including observational and  theoretical astrophysics as well as cosmology. Our senior scientists  participate in the H.E.S.S., CTA, and VIRGO/LIGO projects and are  involved in instrumental projects concerning the astronomical satellites  SPICA, UVSat, and ATHENA. CAMK PAN represents the Polish astronomical  community in the SALT consortium which operates an 11-m optical  telescope in South Africa. The Center's scientists are leading  participants in the Polish scientific satellite project, BRITE,  dedicated to precise stellar brightness measurements, and in the project  ARAUCARIA, dedicated to the calibration of the cosmological distance  scale. They also operate SOLARIS – a network of southern hemisphere  small robotic telescopes committed to stellar astronomy and the search  for exoplanets.
Studies last 4 years and begin on October 2,  2023. During the 4-year period, students are required to take specific  courses, lectures (including interdisciplinary lectures) and participate  in seminars, as well as prepare the doctoral thesis. All seminars and  lectures are in English. The regulations of the doctoral school,  including the program of the Studies, are posted on the CAMK PAN web page. 
Students  are based and take their courses in Warsaw or in Toruń according to the  location of their supervisors. Students based in Warsaw may apply for  accommodation in the hotel run by our Center.
An information  about the proposed research topics and their supervisors is attached to  this announcement. Candidates can apply for up to two topics, but should  indicate the preferred one. Before applying, candidates should contact  their potential supervisors to obtain more details on the proposals. 
Students  in the doctoral school receive a scholarship for the period of 4 years.  The amount of scholarship is set in the Law on higher education and  science and is 2668 PLN/month, gross, before the mid-term evaluation  (years 1–2) and 4110 PLN/month, gross, after the positive mid-term  evaluation (years 3–4). 
For the application, candidates should provide their complete application documents including:
All documents should be in the PDF format, including scans, and should be submitted via
by June 2nd, 2023.  In the online system, choose "Register" and "Nicolaus Copernicus  Astronomical Center, Polish Academy of Sciences". After giving your  consents, you will be able to enter your data and upload your  application documents and select a topic. After uploading the documents you  should receive an email confirmation.
In addition to application documents given above, at least one recommendation letter should be sent directly by the referee to: phdstudies@camk.edu.pl, before the application deadline (June 2nd).
The  Recruitment Board will select candidates for the interview, which will  take place on June 12th –  June 23rd, 2023 (9 am – 4 pm, CEST).  Decisions about admission will be made by the end of mid July 2023 and  all the candidates will be notified by e-mail. For additional  information contact the coordinator of the doctoral school, Dr. Radosław  Smolec (smolec@camk.edu.pl) or the Center’s secretary office (Mrs. Katarzyna Morawska, kasia@camk.edu.pl).
  
Warsaw, May 4th, 2023                    
Attachment: Proposed topics of PhD theses:
Supervisors: Prof. J. Leszek Zdunik (contact: jlz@camk.edu.pl) and dr hab. Michał Bejger (contact: bejger@camk.edu.pl)
Neutron  stars are the most compact material objects known. Vast majority of  their interior is composed of matter much denser than the one present in  atomic nuclei. Conditions, in which this matter exists, are impossible  to reproduce and study in terrestrial experiments. Additionally, the  dense matter may exhibit exotic properties, i.e. possess exotic  particles and/or phases. One of the proposed solutions to this  fundamental physics mystery is the deconfinement of quarks, which are  constituents of nucleons (protons and neutrons). Each theoretical  description of dense matter can be quantified in the form of an equation  of state, i.e. the relation between pressure and density of matter, as  well as additional parameters. This relation is a starting point to  construct macroscopic models of neutron stars. Neutron-star astrophysics  aims at recovering the description of the dense matter through the  observations of global neutron-star properties, such as stellar masses,  radii, tidal deformabilities, moments of inertia etc.  
This PhD  project aims at studying the behavior of building block of atomic nuclei  - nucleons – in order to understand, through theoretical modeling,  their properties as objects composed of quarks, specifically to explore  their pressure-density properties inside the nuclei, and deconfinement  of quarks at high densities present in the cores of neutron stars. These  properties will subsequently be used to produce equations of state to  predict observable parameters of neutron stars in the multi-messenger  perspective: electromagnetic observations, as well as detections of  gravitational waves. 
Optimal PhD candidates should be familiar with  the theoretical methods of constructing dense matter equations of state,  and demonstrate knowledge of application of the dense-matter physics in  multi-messenger astrophysics of neutron stars. 
Location: Warsaw 
Supervisor: Dr hab. Jarosław Dyks (contact: jinx@ncac.torun.pl)
The  radio emission from pulsars is one of the greatest puzzles of  contemporaneous astrophysics. The profiles and polarization exhibit  striking shapes and mysterious symmetry. We have recently made partial  progress in disentangling the enigma: a new model for the  apparently-conal profile shape has been formed, cartographic effects in  polarization have been recognized, and the coherent transitions between  orthogonal polarization modes have been identified. Within the project  we will try to interpret the polarized profiles in terms of geometry and  physics. The student will perform diverse numerical tests and data  modelling. Candidates with good spatial imagination, and keen to learn  some plasma physics, are welcome.
Location: Toruń
Supervisor: Dr hab. Brynmor Haskell (contact: bhaskell@camk.edu.pl)
Neutron  stars are incredibly compact objects, with interior densities that  exceed nuclear density, and allow us to study fundamental physics in  regimes impossible to achieve in terrestrial experiments. They are also,  however, cold objects, and the neutrons in their interior are expected  to be superfluid and the protons superconducting. This leads to  observable astronomical phenomena, such as glitches in radio pulsars,  and may be linked to gravitational wave emission.
This project aims  to study superfluid neutron stars numerically by constructing  microscopic models of vortex motion in the interior, and using them to  derive large scale parameters for hydrodynamical models, that can then  be compared to astrophysical observations.
Location: Warsaw
Supervisor: Prof. dr hab. Włodzimierz Kluźniak (contact: wlodek@camk.edu.pl)
Topics  in high energy radiation and the astrophysics of compact objects  (singularities, black holes, neutron stars), including the structure and  emission of accretion disks.
Location: Warsaw