7th Integral & Bart Workshop - 2010

List of Abstracts


Jan Štrobl: BART & D50: recent status and events (View PDF)

We will briefly introduce the actual configuration and recent status of two robotic telescopes - BART and D50, both operated, maintained and developed by HEA group in Ondřejov. Both telescopes ...

Martin Jelinek: COLORES: an imaging spectrograph for BOOTES-2 (View PDF)

COmpact LOw REsolution Spectrograph is an imaging spectrograph for BOOTES. It is designed to provide low resolution, photon-counting spectroscopy of faint objects.

Attila Meszaros: Cosmology and the subgroups of gamma-ray bursts (View PDF)

There are three subgroups of the gamma-ray bursts (Horvath et al. astro-ph/1003.0632; ApJ, in press). They are defined with respect to the duration as short, intermediate and long ones. The ...

András Kovács: Cosmology with GRBs (View PDF)

In the case of gamma-ray bursts with measured redshift one can calculate k-correction. This method products some valueable data for cosmological probes using L. Amatis relation [Amati et al. arXiv:0805.0377v2 ...

Joern Wilms: Cyclotron Lines in strongly magnetized neutron stars (View PDF)

Rene Hudec: Czech Participation in INTEGRAL (View PDF)

The Czech participation in ESA INTEGRAL satellite (with emphasis of ISDC and onboard OMC experiment) will be briefly introduced and presented, including historical background.

Rene Hudec: Czech Participation in IXO

We will review the Czech participation in the IXO project considered by ESA/NASA/JAXA, with emphasis on development of alternative (back-up) technologies for X-ray optics for this mission.

Martin Blažek: Data Mining for Faint Triggers in INTEGRAL IBIS (View PDF)

We report on our efforts and developed methods for data mining for faint triggers in INTEGRAL IBIS data. Some examples will be also given and discussed.

Matus Kocka: Detections of solar flares, GRBs and terrestrial gamma ray flares by SID monitor (View PDF)

SID monitor (Sudden ionospheric disturbance) is a very powerful method for detecting events like Solar flares, terrestrial gamma rays and even GRBs. This method is based on detection scattered waves ...

Ondrej Gedeon: Glass response to the electron and proton irradiations (View PDF)

The contribution reviews the irradiation experiments performed on various glasses. The glass response, especially the changes on surface, to irradiation is elucidated on both atomic and macroscopic level.

Rene Hudec: Hot News: The Puzzle of V407 Cygni

I will briefly review and discuss the recent results on V407 Cygni, a strange symbiotic star with Mira companion and recent nova outburst in March 2010 with probable gamma-ray emission ...

Aleksander Filip Zarnecki: Improving photometry of the Pi of the Sky (View PDF)

After brief introduction to the Pi of the Sky project standard photometry method used in the data reduction will be described. After data quality cuts uncertainty of the single measurement ...

Claudia Wigger: Jost Buergi (View PDF)

Jost Buergi (born 1552 Switzerland - 1632) was a clockmaker, a maker of astronomical instruments and a mathematician. During his time in Praha, he worked closely with Johannes Kepler.

Matus Kocka: JULO1 small stratospheric balloon platform for students` near-space experiments (View PDF)

JULO1 is small platform for near-space (stratospheric) experiments for students and inexpensive atmospheric science. It is custom made small probe with ordinary weather helium baloon designed to be capable of ...

Filip Munz: keV-TeV connection in spectra of blazars (View PDF)

Updated look on VHE sources (measured by ground-based Cerenkov observatories and recently by Fermi satellite) that might also be reasonably exposed by INTEGRAL through its lifetime.

Rene Hudec: Lessons learned from INTEGRAL: Blazars (View PDF)

We will give a short summary and discussion of INTEGRAL observations of blazars (21 objects detected and observed), with emphasis on hard X-ray and gamma-ray data (IBIS)

Rene Hudec: Lessons Learned from INTEGRAL: Cataclysmic Variables (View PDF)

We will review and discuss the INTEGRAL observations of cataclysmic variables (32 objects detected and investigated in hard X-rays) with emphasis on IBIS data.

Vladimir Lipunov: MASTER ROBOTIC NET

The main goal of the MASTER-Net project is to produce a unique fast sky survey with all sky observed over a single night down to a limiting magnitude of 21. ...

Sabine Schindler: Metal enrichment of the intra-cluster medium (View PDF)

We present X-ray observations of the metal distribution in clusters of galaxies. The metal distribution is very clumpy and inhomogeneous. With numerical simulations we study what processes are efficient to ...

Anton Chernenko: On the intrinsic simplicity of spectral variability of GRBs

Relativistically expanding sources produce radiation that manifest rich spectral evolution and diverse light curve structures. Even if individual emitting regions have similar and simple geometry and rest frame spectra, spectral ...

Klaus Schilling: Potential for Science on Satellites of 1 kg

The in orbit experiences of the two ico-satellite missions UWE-1 and -2 will be reported. The missions UWE-3 and -4 in implemetation stage will be outlined as well as planned ...

Alexei Pozanenko: Search for TGF in INTEGRAL observations (View PDF)

During CXB measurement by Earth occultation technique in early 2006 INTEGRAL observed the Earth in FOV of SPI and IBIS/ISGRI. Despite of high altitude elliptical orbit the INTEGRAL observatory could ...

Marcin Sokolowski: Searching for space debris elements with the “Pi of the Sky” system

The main purpose of the “Pi of the Sky” system is an investigation of short timescale astrophysical phenomena ( particularly gamma-ray bursts, optical transients and variable stars ). However, the ...

Rene Hudec: Silicon wafer shaping for Astronomical X-ray Optics: plastic vs. elastic deformation (View PDF)

Polished wafer from monocrystalline silicon available in semiconductor industry has thickness homogeneity of tenths of micrometer and surface roughness of tenths of nanometer. The possible utilization of silicon wafers for mirrors in astronomical x-ray optics is dependent on the possibility to precisely shape them without surface deterioration. One of the proposed solutions is lightweight optics based on self supporting wafers. We present comparison of two shaping methods: plastic deformation and the use of thin layers with intrinsic stress. Advantages and disadvantages of both methods are discussed.

Rene Hudec: Small LE X-ray Telescopes as possible Payload for a Picosatellite

We will refer on small and light Lobster-Eye X-ray telescopes as potential payload for a Pico-satellite mission.

Ivica Miskovicova: Spectroscopy of the stellar wind in the Cygnus X-1 system (View PDF)

The luminosity of black holes is produced through the accretion of material from their companion stars. Depending on the mass of the donor star, accretion of the material falling onto ...

Alberto Castro-Tirado: The BOOTES worldwide network of Robotic Telescopes

I will show the motivation for a world-wide network of fast-reacting robotic telescopes and the achievements obtained so far.

Ingo Kreykenbohm: The scarcely known X-ray pulsar 4U1909+07 - an overlooked pearl (View PDF)

We present a detailed spectral and temporal analysis of the accreting High Mass X-ray Binary (HMXB) pulsar 4U 1909+07 with INTEGRAL and RXTE which was only in the last years discovered to be a pulsar. 4U 1909+07 is typically detected at a level of about 15 mCrab in INTEGRAL/ISGRI, but can reach about 300 mCrab during flaring activity. The neutron star exhibits a very long pulse period of 605s that changes erratically around this value due to accretion from the stellar wind. The pulse profile itself is extremely energy dependent: while it shows a double peaked structure at low energies, the secondary pulse decreases rapidly with increasing energy and vanishes above 20keV such that only the sharp primary pulse is visible. This evolution is consistent between PCA, HEXTE, and ISGRI. While phase averaged spectra are usually well described by a powerlaw modified at higher energies by an exponential cutoff, an additional blackbody component is required to describe the spectrum of 4U1909+07. Pulse phase resolved spectroscopy reveals that this blackbody component as well as the cutoff energy are strongly variable with pulse phase while.

Alexei Pozanenko: Where is the third mode of bi-modal duration distribution? (View PDF)

Based on T_90 distributions of Gamma-ray bursts detected in different experiments (BAT/Swift, GRBM/BeppoSAX, BATSE/CGRO, SPI-ACS/INTEGRAL, PHEBUS/Granat and APEX/Phobos) we discuss the feasibility of a third mode of well known bi-modal ...

Matus Kocka: White dwarfs masses estimation in IP from INTEGRAL/IBIS (View PDF)

INTEGRAL/IBIS is a very powerful instrument for high energy astrophysics. One of the most interesting high energy sources from the Galaxy are intermediate polars and polars. By using spectra from IBIS/ISGRI is possible to determine masses of the white dwarfs in this systems. Determining of WD masses in IP is not a trivial task for astrophysics and this method allows us to establish it according to temperature measurements of the shock region on the poles of WD.

Rene Hudec: Wide-Field Low Resolution Spectrometry (View PDF)

One of the outcome of the ESA Gaia Mision will be Wide-Field Low Resolution Spectrometry (BP/RP photometers). We will review the instrument performance and compare with nearest analogy, i.e. wide-field plate surveys with objective prism, and discuss the scientific use and importance.

Joern Wilms: Work on broad-band black holes spectra (View PDF)

Franco Giovannelli: X-ray Transient Sources: Multifrequency Laboratories (View PDF)

We will discuss in general the multifrequency behaviour of X-ray transient sources with particular emphasis about the interactions between the two components of the systems. Low energy processes mainly occurring ...

Lorenzo Lovisari: XMM observations of metal abundances in galaxy clusters (View PDF)

Because of their deep gravitational wells, galaxy clusters retain all the metals produced by the stellar populations of the member galaxies. Most of these metals reside in the hot plasma ...


Petr Pata: Advanced processing of the images obtained from the wide-field astronomical optical systems

There are many various applications in astronomy which are using the WFC or UWFC (Ultra Wide-Field Camera) systems. UWFC systems frequently have so called SV (Space Variant) properties. Images obtained ...

Martin Jelinek: Afterglow observations by BOOTES-1B

A small presentation of the 30cm BOOTES-1B telescope.

Martin Blažek: Analysis of spatially and time variable scientifical imaging systems (View PDF)

We refer about our effort to formulate the algorithms for the image signal processing with spatially and time variant Point-Spread Function (PSF) and inhomogenous noise of the real imaging systems. ...

Róbert Andrássy: Gamma-Ray Bursts and their Precursors (View PDF)

Precursors are still a puzzle in the field of gamma-ray burst (GRB) astrophysics. The poster introduces a thesis focused on search for precursors, mainly in RHESSI GRB database. It also ...

Rene Hudec: Investigation of High-Energy Sources on Archival Astronomical Plates

We refer on investigations and identifications of high-energy sources in optical light using astronomical archival plates. The plate archives enables very long-term analyzes covering up to 100 years.

Rene Hudec: Lobster-Eye X-ray Telescopes & Astrophysical Applications

We refer on astronomical telescopes of Lobster-Eye Type, with emphasis on recent status of development, and astrophysical applications.

Rene Hudec: Low-cost optical all-sky monitor

We will refer on development and tests of a low-cost optical all-sky monitor based on a fish-eye lens and a digital camera. It represents an inexpensive device for easy duplication ...

Stanislav Vítek: MAIA - double-station video observation of the meteor

The double station observation of the meteors by means of sensitive image intensifier technique started at the Ondrejov Observatory 10 years ago. The sensitivity of such instrumentation allows detection of ...

Petr Pata: New Image Compression Algorithm Based on Adaptive Wavelet Decompositon

This paper deals with a compression of image data in astronomy applications. Astronomical images are typical with their specific properties – high grayscale bit depth, size, noise occurrence and special ...

Martina Landová: Protection of Si wafers surfase during cutting

In this experiment we cut the Si wafer for x-ray telescopes by laser beam into peaces of required size. During cutting and experiments we protect the Si wafer surface by ...

Jakub Ripa: Rising Indications for Three Gamma-Ray Burst Groups

Several papers have been written on the issue of gamma-ray burst groups (GRBs). We present a statistical study based on the durations and spectral hardnesses employing the data of the ...

Rene Hudec: Technologies for Future Astronomical X-Ray Telescopes

Technologies for future space X-ray telescopes such as IXO will be presented and discussed.

Vladimir Tichy: Tests of Lobster Eye Optics for Possible Space Mission

Prototype lobster eye optics module called P-25 manufactured in Rigaku Innovative Technologies Europe, s.r.o. is presented. This module has small mass and dimensions and it can be applied on micro- ...

Victoria Grinberg: Timing analysis with INTEGRAL (View PDF)

INTEGRAL is one of the few instruments capable of detecting X-rays above 20 keV. It is therefore in principle well suited for studies of X-ray variability in this regime. Because ...

Peter Vanya: Use of piezoelements in future X-ray astronomy

There are plans to build great orbital astronomical X-ray laboratories like IXO and Generation-X in next 10 years or so. Part of the research is expected to be done in ...