| Warszawa) skrecamy obok Mostu Debnickiego (blisko Wawelu) wzdluz Wisly i torow tramwajowych do Salwatoru, w kierunku przeciwnym niz centrum. po okolo 5 km osiagamy Przegorzaly. 4. Przygotowane przez autorow PREZENTACJE PLAKATOWE (rozmiary: 60-70cm na 80-100 cm) nalezy wywiesic jak najszybciej po przybyciu na tablicach. przygotowanych w miejscu, gdzie beda sie odbywaly przerwy na kawe. Wszystkie te przerwy beda tez traktowane, jako Sesje Plakatowe. Autorow plakatow - w miare mozliwosci i checi - zapraszamy wtedy do obecnosci przy swoich plakatach. Zgloszenia "spoznionych" plakatow mozna jeszcze kierowac do LKO. 5. Sala obrad Zjazdu bedzie wyposazona w podstawowe srodki audiowizualne. 6. Wieczorek powitalny odbedzie sie w poniedzialek 10 wrzesnia po kolacji. W drugim dniu obrad Zjazdu. 11 wrzesnia odbedzie sie wieczorem Bankiet; a 12 wrzesnia - dla chetnych - ognisko w Obserwatorium Astronomicznym UJ na Skale lub inna impreza kulturalna w centrum Krakowa. Natomiast 13 wrzesnia odbedzie sie calodzienna wycieczka od 9.00 -17.00: "Szlakiem zegarow slonecznych Polski poludniowej". PROGRAM XXX ZJAZDU 10.IX - PONIEDZIALEK 10.00 - L K O Rejestracja, kwaterowanie 15.00 - 15.30 Otwarcie Zjazdu Wreczenie nagrody im.W. Zonna oraz Nagrody Mlodych PTA 15.30 - 16.30 B. Paczynski Monitorowanie zmiennosci calego nieba 16.30 - 17.00 Przerwa 17.00 - 18.00 T. Kwiatkowski Badania planetoid - 200 lat po ich odkryciu 18.00 - 19.00 Spotkanie z Prof.K.Stepniem, naszym reprezentantem w KBN od 20.00 Wieczorek powitalny ************************ 11.IX - WTOREK 09.00 - 10.00 R. Wielebinski Radiowe mapy nieba 10.00 - 11.00 J. Kaluzny Stare i mlode gromady kuliste 11.00 - 11.30 Przerwa 11.30 - 12.30 G. Madejski Zrodla rentgenowskie 15.00 - 16.00 J. Gil Zagadka promieniowania radiowego pulsarow 16.00 - 16.15 Przerwa 16.15 (16.30 drugi termin) - 18.30 WALNE ZEBRANIE POLSKIEGO TOWARZYSTWA ASTRONOMICZNEGO 18.30 - 19.30 M. Kubiak Spotkanie dyrektorow instytututow astronomicznych od 20.00 Bankiet Przewidywany porzadek obrad Walnego Zebrania: 1. Wybor przewodniczacego Zebrania 2. Przyjecie porzadku obrad 3. Zatwierdzenie protokolu poprzedniego Walnego Zebrania 4. Sprawozdanie ZG PTA z dzialalnosci w latach: 1999 - 2001 5. Sprawozdanie Komisji Rewizyjnej PTA za lata 1999 - 2001 6. Dyskusja nad sprawozdaniami 7. Zatwierdzenie proponowanych zmian w Statucie i Regulaminach PTA 8. Wybory nowych wladz PTA na lata 2001 - 2003 9. Wolne wnioski ****************** 12.IX - SRODA 09.00 - 10.00 M.Tomczak Promieniowanie rentgenowskie rozblyskow slonecznych 10.00 - 11.00 R.Juszkiewicz Parametr Omega 11.00 - 11.30 Przerwa 11.30 - 13.00 J.M.Kreiner Sesja dydaktyczna 14.30 - 15.30 M.Abramowicz Klasyczna i kwantowa fizyka czarnych dziur 15.30 - 17.30 A.Kus Sesja instrumentalna 17.30 - 17.45 Zamkniecie obrad Zjazdu 18.30 - 21.00 L K O Koncert lub ognisko na Skale **************** 13.IX - CZWARTEK 09.00 - 17.00 J.M.Kreiner Wycieczka szlakiem zegarow slonecznych Polski poludniowej WYKAZ REFERATOW zgloszonych do dnia 27 sierpnia 2001 na sesje plakatowe Bartosz Dabrowski - Centrum Astronomii Uniwersytetu Mikolaja Kopernika Sloneczne szpilki. (Dabrowski B., Zajaczkowski R., Kus A.) Iwona Gacka - Instytut Astronomiczny Uniwersytetu Wroclawskiego Znajdowanie i badanie orbit okresowych ``Trojanczykow'' dla planet zewnetrznych Ukladu Slonecznego. Michal Hanasz - Centrum Astronomii Uniwersytetu Mikolaja Kopernika Generacja galaktycznego pola magnetycznego z udzialem promieniowania kosmicznego. Grzegorz Hrynek - Centrum Astronomii Uniwersytetu Mikolaja Kopernika Emisja maserowa 6.7 GHz stowarzyszona z emisja termiczna amoniaku. Maria Jakimiec - Instytut Astronomiczny Uniwersytetu Wroclawskiego Analiza promieniowania radiowego (10.7 cm) w czterech cyklach slonecznych. Marek Jamrozy - Obserwatorium Astronomiczne Uniwersytetu Jagiellonskiego Fotometria wielobarwna galaktyk gigantycznych. (Jamrozy M., Machalski J., Zola S., Serafinovich N.) Jaroslaw Kijak - Centrum Astronomii im J. Keplera Obszary emisji radiowej pulsarow. Andrzej Kulak - Obserwatorium Astronomiczne Uniwersytetu Jagiellonskiego Wyniki obserwacji rezonansu Schumanna w 23 cyklach aktywnosci Slonca. (Kulak A., Michalec A., Kubisz J., Zieba S.) Gabriela Michalska - Instytut Astronomiczny Uniwersytetu Wroclawskiego Uklady prekataklizmiczne. Tomasz Mrozek - Instytut Astronomiczny Uniwersytetu Wroclawskiego Badanie impulsowych pojasnien w miekkim promieniowaniu rentgenowskim rozblyskow slonecznych. Andrzej Niedzielski - Centrum Astronomii Uniwersytetu Mikolaja Kopernika (Do zdecydowania pozniej) Andrzej Pigulski - Instytut Astronomiczny Uniwersytetu Wroclawskiego Uklad zacmieniowy V357 Her. (Pigulski A., Branicki A.) Krzysztof Radziszewski - Instytut Astronomiczny Uniwersytetu Wroclawskiego Kinematyka oraz grubosci optyczne plazmy slonecznej w chlodnych petlach porozblyskowych. Slawomir Rucinski - David Dunlap Observatory, University of Toronto Program spektroskopowych obserwacji krotko-okresowych gwiazd podwojnych w David Dunlap Observatory, University of Toronto. Stanislaw Rys - Obserwatorium Astronomiczne Uniwersytetu Jagiellonskiego Relativistic phenomena in AGN. Andrzej Smialkowski - Katedra Fizyki Doswiadczalnej Uniwersytet Lodzki Anisotropy of Ultra High Energy Cosmic Rays from Luminous Infrared Galaxies. (Smialkowski A., Giller M., Michalak W.) Ireneusz Wlodarczyk - Planetarium Slaskie, Chorzow Przewidywanie ruchu planetoid przyblizajacych sie do Ziemi na okres najblizszych 2000 lat. Stanislaw Zieba - Obserwatorium Astronomiczne Uniwersytetu Jagiellonskiego Periodycznosci obserwowane w radiopromieniowaniu Slonca na czestotliwosci 2800 MHz, w czterech cyklach aktywnosci. (Zieba S., Maslowski J., Michalec A., Kulak A.) - Spis uczestnikow XXX Zjazdu PTA (wg stanu na dzien 20 sierpnia 2001) * - nie czlonkowie PTA 1. Marek ABRAMOWICZ 2. Jolanta BALANDYNOWICZ 3. Urszula BAK 4. Wlodzimierz BEDNAREK 5. Jadwiga BIALA 6. Malgorzata BEDKOWSKA - SZURMINSKA 7. Henryk BRANCEWICZ 8. Andrzej BRANICKI 9. Alojzy BURNICKI 10. Henryk CHRUPALA 11. Lucyna CHOLDA * 12. Krzysztof CHYZY 13. Bartosz P. DABROWSKI 14. Marek DROZDZ 15. Maria DUCH 16. Tadeusz Zbigniew DWORAK 17. Jaroslaw DYKS 18. Iwona GACKA 19. Grazyna GAWRONSKA 20. Janusz GIL 21. Maria GILLER 22. Robert GLEBOCKI 23. Piotr GNACINSKI 24. Wlodzimierz GODLOWSKI 25. Grzegorz HRYNEK 26. Cecylia IWANISZEWSKA 27. Maria JAKIMIEC 28. Marek JAMROZY 29. Ewa JANASZAK 30. Michal JAROSZYNSKI 31. Mikolaj JERZYKIEWICZ 32. Magdalena JEDRKIEWICZ - GOS * 33. Roman JUSZKIEWICZ 34. Janusz KALUZNY 35. Jaroslaw KIJAK 36. Honorata KORPIKIEWICZ 37. Lidia KOSIOREK 38. Jerzy KREINER 39. Jacek KRELOWSKI 40. Malgorzata KROLIKOWSKA - SOLTAN 41. Agnieszka KRYSZCZYNSKA 42. Marcin KUBIAK 43. Boguslaw KULESZA 44. Andrzej KULAK 45. Maria KURPINSKA - WINIARSKA 46. Andrzej KUS 47. Tomasz KWAST 48. Tomasz KWIATKOWSKI 49. Tomasz LEWICKI 50. Jerzy MACHALSKI 51. Greg MADEJSKI 52. Andrzej MARKS 53. Napoleon MARON 54. Jozef MASLOWSKI 55. Adam MICHALEC 56. Gabriela MICHALSKA 57. Tadeusz MICHALOWSKI 58. Jan MIETELSKI 59. Tomasz MROZEK 60. Andrzej NIEDZIELSKI 61. Waldemar OGLOZA 62. Michal OSTROWSKI 63. Katarzyna OTMIANOWSKA - MAZUR 64. Bohdan PACZYNSKI 65. Andrzej PIGULSKI 66. Elzbieta PLUCINSKA 67. Bartlomiej POKRZYWKA 68. Halina PRETKA - ZIOMEK 69. Krzysztof RADZISZEWSKI 70. Wenancjusz RADZISZEWSKI 71. Radoslaw REK 72. Bronislaw RUDAK 73. Konrad RUDNICKI 74. Stanislaw RYS 75. Marek SARNA 76. Kazimierz SCHILLING 77. Irena SEMENIUK 78. Grazyna SIEMIENIEC - OZIEBLO 79. Marta SIEPRAWSKA - WINKIEL * 80. Jerzy SIKORSKI 81. Jozef SMAK 82. Leszek M. SOKOLOWSKI * 83. Andrzej SOLTAN 84. Grzegorz STACHOWSKI 85. Kazimierz STEPIEN 86. Marek STESLICKI 87. Marek SZCZEPANSKI 88. Jacek SZUBIAKOWSKI 89. Slawomira SZUTOWICZ 90. Andrzej SMIALKOWSKI 91. Malgorzata SROBKA-KUBIAK 92. Michal TOMCZAK 93. Marek URBANIK 94. Walter WEGNER 95. Richard WIELEBINSKI 96. Ireneusz WLODARCZYK 97. Edwin WNUK 98. Anrzej WOSZCZYK 99. Agnieszka WOZNA 100. Bartlomiej ZAKRZEWSKI 101. Leszek ZALESKI 102. Danuta ZAREMBA 103. Stanislaw ZIEBA 104. Krzysztof ZIOLKOWSKI 105. Janusz ZIOLKOWSKI 106. Stanislaw ZOLA ======================================================================= II. Nowosci naukowe - nie wszystkie calkiem nowe GAMMA RAY BURSTS AND SUPERNOVAS. Although the issue of whether some or most gamma-ray-burst (GRB) objects lie at extragalactic distances has been settled (they do), the question of what they are is still a mystery. Two new results reported in the 3 November issue of Science support the idea that supernovas are responsible in some way. X-ray spectra from one GRB recorded by the BeppoSAX satellite (Amati et al.) and from another GRB as recorded by the Chandra satellite (Piro et al.) detect the presence of iron, which is made in supernovas. The trouble is that there seems to be a delay (of some years) between the time of the GRB and the time of the supernova. A new hypothesis to account for the delay is offered by Mario Vietri of the Third University of Rome and Luigi Stella of the Astronomical Observatory of Rome. They believe the star in question has collapsed twice. In their "supranova" model a rapidly rotating supermassive star collapses first to a neutron star, scattering a debris cloud as it does so. Later the neutron star collapses into a black hole, unleashing a gamma burst which illuminates the debris shell left from the first collapse. COSMIC RAYS AND CLOUD COVER. Galactic cosmic rays (GCRs) play an important role in controlling global cloud cover on Earth, according to recent studies by researchers at the Danish Space Research Institute in Copenhagen (Nigel D. Marsh, 011-45- 35325740). GCRs, consisting principally of energetic protons emitted from stars within our galaxy, are a primary source of the atmospheric ionization which affects cloud formation. Because cloud cover has an impact on both the reflection of solar radiation and the retention of heat in the atmosphere, correlation between GCRs and low level clouds suggests a link between global climate changes and cosmic ray flux (see figure at http://www.aip.org/physnews/graphics). The discovery reveals a convoluted connection between solar variability and climate change. Fluctuations in the sun's radiative output are generally dismissed as too small to account directly for global warming and other climate variations. Periods of intense solar activity, however, lead to powerful solar winds which shield the atmosphere from cloud-forming GCRs, potentially modulating the global climate. (N. D. Marsh; H. Svensmark, Physical Review Letters, 4 December.) Researchers at the University of Leeds (UK), on the other hand, have observed a direct and rapid connection between atmospheric chemistry and ultraviolet light from the sun (Dwayne E. Heard, 44-113-233-6471, dwayneh@chem.leeds.ac.uk). During the 97% eclipse of the sun over Ascot, England, local ozone concentrations fell to 60% of typical daytime levels, and quickly returned to normal after the event. The study demonstrates the dynamic connection between sunlight and the photochemistry of atmospheric gasses which may contribute to global warming, smog formation, and acid rain. (J. P. Abram; et al, Geophysical Research Letters, 1 November.) THE LAKE DISTRICT ON MARS. The best images yet of the Martian surface, as recorded by the Mars Global Surveyor, show what look like thick and sometimes uniform layering within craters and other depressed areas. Such layering on Earth is associated with sedimentation arising from standing and flowing water. Today Mars is a cold and dry place, but the new images add ammunition to those who argue that Mars was once much warmer and wetter, and possessed of a thicker atmosphere. If Mars once had lakes or shallow oceans, they were pretty much distributed everywhere on the surface, to judge by the new photographs. Sedimentation layers on Earth preserve past geologic activity as well as acting as a repository for fossilized life forms, so biologists would therefore also like to get a much closer look at those Martian rock layers. (NASA press release, December 4; figures at http://www.msss.com/moc_gallery/; see also Science, 8 December 2000.) PLANETARY OCTAVE. Johannes Kepler succeeded in establishing a formula for relating a planet's orbital period to its mean distance from the sun, but he failed in his ardent attempt to discern a pattern in the spacings or periods among the planets. Such a pattern, enforced by resonant gravity effects, was subsequently observed in the commensurate periods of some of Jupiter's moons. Now the reality of synchronous planetary orbits has turned up in a solar system unknown to Kepler, or to anyone else until recently. Geoffrey Marcy (UC Berkeley) and his associates, discoverers already of tens of extrasolar planets, report now that the star Gliese 876, 15 light years from Earth, is orbited by one planet every 60 days and by a second every 30 days. (The presence of the planets around the star and their orbital properties are deduced from the subtle wobble of the star's position as it is tugged by its satellites.) The almost exact 2:1 (octave) ratio in the orbital periods should help theorists model the formation of planetary systems. Marcy, speaking at this week's meeting of the American Astronomical Society (AAS) in San Diego, also reported a second two-planet extrasolar system no less novel. The star HD168443, 123 light years from Earth, is circled every 58 days by one heavy planet (7.7 Jupiter masses) at a distance of only 0.3 astronomical units (1 AU is the distance from Earth to sun) and by another every 4.8 years. The second planet's mass, estimated to be at least 17 Jupiter masses, is the most massive exoplanet ever found, and calls into question the notion that planets could not reach much above 13 Jupiter masses without igniting as stars. (http://www.exoplanets.org) PERMIAN CATASTROPHE COMET? A trace of indium in geological records around the world corresponding to the time just between the Cretaceous and Tertiary eras 60 million years ago has generally been interpreted as evidence of a catastrophic meteor strike leading to the extinction of many species, including the dinosaurs. Could such an event have led to the even greater extinctions that occurred during the Permian era 250 million years ago? New forensic evidence seems to point in that direction. Geologic samples in Japan and China, this time from the Permian era, reveal C60 molecules bearing an anomalous ratio of helium-3 to helium-4 atoms, suggesting an extra-terrestrial origin. (Science, February 23, 2001.) THE FIRST DIRECT EVIDENCE OF BLACK HOLE ROTATION arrives in the form of the telltale dimming of x rays coming from a microquasar about 10,000 light years from Earth. The object in question, GRO J1655-40, consists of a black hole devouring a nearby normal-star companion. The pillage is not direct. Instead matter from the star collects on an accretion disk orbiting the black hole before taking the final plunge through the event horizon. This jumping-off platform is so hot that matter there glows at x-ray wavelengths. Seeing this glow and measuring how the glow changes over short time intervals requires the use of a special telescope the Rossi X Ray Timing Explorer (RXTE), which takes snapshots at a rate of 1000 per second. A common type of x- ray modulation seen in x-ray binary systems, called a quasi-periodic oscillation (QPO), is thought to occur because the hottest x-ray emitting part of the disk, in its swift orbit around the black hole, is periodically occluded by the black hole itself. The gravitational fields at work are enormous after all, the inner edge of the accretion disk is only tens of kilometers or so from a black hole of about 7 solar masses. The specific orbital radius can be deduced from the laws of general relativity which predict a fixed "innermost stable orbit" for matter circling a black hole. In this case the predicted orbit is about 64 km. Many theorists believe, however, that a black hole that spins would have a much smaller event horizon and this would permit orbiting matter to attain a much tighter innermost stable position, and a correspondingly faster orbital rate. At last week's APS meeting in Washington DC, Tod Strohmayer of the Goddard Space Flight Center (301-286-1256) reported a previously undiscovered QPO pattern in x rays from GRO J16550-40. The frequency of this QPO, 450 Hz, is the highest ever seen for x rays coming from a black hole system, implying an orbital radius of only 49 km a value consistent, Strohmayer says, with a spinning black hole. (Preprint on Los Alamos server: astro- ph/0104487);video at http://www.gsfc.nasa.gov/GSFC/SpaceSci/structure/spinningbh/spin ningbhpix.htm) ======================================================================= | |
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