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Journal Club


"Planets which should not be there"

M. Różyczka (CAMK)

based on Setiawan et al., arXiv:1011.6376


"The Radiative Efficiency of Accretion Flows in Individual AGN"

A. Sądowski (CAMK)

based on Davis & Laor, arXiv:1012.3213


"KOI-126: A Triply Eclipsing Hierarchical Triple with Two Low-Mass Stars"

W. Pych (CAMK)

based on Carter et al., abstract

"Populations of variable red giants in the Magellanic Clouds"

A. Schwarzenberg-Czerny (CAMK)

Based on Wisniewski et al.


"Astronomical discoveries in 2010"

S. Bajtlik (CAMK)


"Segue 1 - the darkest galaxy known?"

E. Łokas (CAMK)

Based on Simon et al., (2010) arXiv:1007.4198


"Observational evidence for matter propagation in accretion flows"

P. Życki (CAMK)

Based on Revnivtsev et al., arXiv:1009.6165


"On the funding of science in Poland"

J. Ziółkowski (CAMK)


"My 3 favorite preprints from the last week"

J. Kałużny (CAMK)

Luhman et al, "Discovery of a Candidate for the Coolest Known Brown Dwarf", arXiv:1102.5411; Knispel et al., "Arecibo PALFA Survey and Einstein@Home: Binary Pulsar Discovery by Volunteer Computing", arXiv:1102.5340; Richard et al., "Discovery of an old galaxy at z=6.027, multiply imaged by the massive cluster Abell 383", arXiv:1102.5092


"How to describe Mars surface using some economic equations"

J. Kotlarz (Warsaw University)


"Is dark matter theory challenged by gassy galaxies result?"

M. Bilicki (CAMK)

Based on McGaugh, arXiv:1102.3913; (title based on this website)


"Kepler laws for beginners: simple geometry instead of differential calculus"

A. Schwarzenberg-Czerny (CAMK)

"Overview of planned Ground Station facility for BRITE satellite mission"

G. Woźniak (CAMK)


"Redshift distortions of clustering and their cosmological implications"

M. Chodorowski (CAMK)


"The Antikythera mechanism"

P. Jacewicz (CAMK)


"Katyń - refleksje umiarkowanego optymisty"

A. Pamyatnykh (CAMK)

This time in Polish!


"Evolution of the binary population in young dense star clusters"

A. Hypki (CAMK)

Based on Kaczmarek, Olczak and Pfalzner, arXiv:1102.2055


"Radio/X-ray correlation of black hole sources"

F. Yuan (Shanghai Astronomical Observatory)


"The Topology and Size of the Universe from the Cosmic Microwave Background"

S. Bajtlik (CAMK)

Based on Aslanyan and Manohar, arXiv:1104.0015


"Twisting of light around rotating black holes"

M. Bejger (CAMK)

Based on Tamburini et al., Nature, 2011, 7, 195


"Polarized Gamma-Ray Emission from the Galactic Black Hole Cygnus X-1"

A. Zdziarski (CAMK)

Based on Laurent et al., arXiv:1104.4282

"GeV Breaks in Blazars"

M. Janiak (CAMK)

Based on Poutanen and Stern, arXiv:1005.3792


"Cooling of Cassiopeia A neutron star"

M. Fortin (Observatoire de Paris-Meudon, CAMK)

Based on: Page et al., arXiv:1011.6142, Shternin et al., arXiv:1012.0045


"Variable Stars in the Space Photometry Era"

G. Handler (CAMK)


"SALT Reloaded"

W. Pych (CAMK)


"Cepheid Multiplicity and Masses: Fundamental Parameters"

N. Evans (Smithsonian Astrophysical Observatory)

Cepheids provide insight into both star formation and stellar evolution. Multiwavelength studies supply binary/multiple properties for these reasonably massive stars, which allows the exploration of differences between between high and low mass stars formation. We are conducting a survey of Cepheids with the Hubble Space Telescope Wide Field Camera 3 (WFC3) to identify possible resolved companions, for example Eta Aql. X-ray observations (Chandra and XMM-Newton) can confirm whether possible low mass companions are young enough to be physical companions of Cepheids, hence providing constraints on star formation. In a related study of intermediate mass stars, Chandra X-ray observations of late B stars in Tr 16 have been used to determine the fraction which have low mass companions (which are X-ray active in contrast to the late B stars which are X-ray quiet). Cepheids have long been used as benchmarks for evolutionary calculations where a measured mass can be combined with a luminosity for an evolved supergiant. The basis for observed masses is ground-based orbits. We discuss the combination of new velocity data from the Moscow group and the Tennessee State Automatic Spectroscopic Telescope (AST) and the new the orbit of V350 Sgr, as well as other recent developments in measured masses.


"Sensitivity of time-series period search"

A. Schwarzenberg-Czerny (CAMK)


"Pulsed very high energy emission from the Crab nebula"

R. Moderski (CAMK)

Based on arXiv:1109.6100


"Conference higlights"

B. Czerny (CAMK)



K. Leszczyński (CAMK)


"Charleston conference highlights"

A. Różańska (CAMK)

It has been six years since the AGN winds in the Caribbean conference that was dedicated to AGN outflows. Many interesting results based on Chandra, XMM, Suzaku, HST, FUSE and ground-based observatories, as well as theoretical insight, were obtained over this period of time. The AGN winds in Charleston is a relatively small workshop dedicated to the physical characteristics of AGN accretion disk winds - the structure, ionization state, kinematics, energetics, driving mechanism and their interaction with their environments. The workshop is scheduled to take place from Saturday, October 15 through Tuesday, October 18, 2011 at the College of Charleston in Charleston, South Carolina. The conference organizers will host a welcome reception on Friday evening, October 14. The workshop will have contributed talks + posters but no invited talks. We have allowed for long coffee breaks, a long lunch interspersed between scheduled events all day long, with one afternoon off for seeing the sights in historic Charleston. Graduate students are encouraged to attend this meeting.

Based on this and this


"Masses of HDE 226868/Cyg X-1 revisited"

J. Ziółkowski (NCAC, Warsaw)


"Recent Highlights on Variable Star Research"

G. Handler (NCAC, Warsaw)


"Copernicus Science Centre revives curiosity, promotes learning, and debates science-society questions"

Lech Nowicki (Copernicus Science Centre, National Centre for Nuclear Research)

Copernicus Science Centre, the largest science centre in Poland operates in Warsaw since November 2010 hosting over 3000 visitors per day. The main facilities: interactive exhibition, four laboratories, planetarium, as well as many events (Science Picnic, workshops, meetings, conferences, science shows) attract and gather wide audience around science-related topics. Copernicus Science Center’s mission will be described and several examples of educational activities of the Center will be presented.

"Discovering the Universe anew"

K. Złoczewski (CAMK, Copernicus Science Centre)

Modern planetarium offers not only view of the night sky from any position at the Earth surface, but it is also time-space travel machine. Contemporary digital projection systems allow to get fully immerse into presented world. The Heavens of Copernicus planetarium is equipped with such a system so it is capable to give interesting educational shows and combine it with deep aesthetic experience.