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wyklad 10.00g piatek 28.10.2005
by Boud Roukema 26 Oct '05

26 Oct '05

Witam, Będzie wykład monograficzny pojutro o 10.00g @KRA. pozdr boud

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ksztalt wszechswiata - monograf 2005/2006 zima
by Boud Roukema 06 Oct '05

06 Oct '05

Cześć Andrzej (Strobel), Proponuję to jako kilka zdanie dotyczący monograf. pozdr boud ---------------------------------------------------------------------- Kształt Wszechświata - Shape of the Universe Monograf dotyczy kształt Wszechświata według standardowych modelu ciepłego Wielki Wybuchu (model zbieżności), tzn jego krzywizna i jego topologia, w aspektach teoretycznych i obserwacyjnych. Linki polecane: http://pl.wikipedia.org/wiki/Ksztalt_Wszechswiata This monograph deals with the shape of the Universe according to the standard hot Big Bang model (convergence model), i.e. its curvature and topology, including both theoretical and observational aspects. Recommended links: http://en.wikipedia.org/wiki/Shape_of_the_universe ----------------------------------------------------------------------

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wikipedia - ogolna uwaga - forma zapodanych definicji:)
by Bartosz Lew 14 Jun '05

14 Jun '05

wlasnie widzialem http://pl.wikipedia.org/wiki/Brakuj%B1ca_materia IMHO, definicje rzeczy umieszczana na wikipedia powinny nasladowac taka forma jaka jest przyjeta w normalnych encyklopediach. I nie powinnos sie stowowas sformuowan typu "nie wiem co by bylo" itp. ---- ------^ jesli juz czegos nie wiadomo to lepiwj uzyc "nie wiadomo" albo nie jest jasne albo cos takiego. pozdrawiam. Bartek

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egzamin ksztalt wsz'a - wyk monog - punkty na twiki
by Boud Roukema 13 Jun '05

13 Jun '05

Witam, Chyba jeszcze są osoby, którze chcą ,,egzamin" dla wykładu monograficznego Kształt Wszechświata tym semestr - wtedy proszę daj mnie - i innych - trochę czas żeby weryfikować twoje 5 punkty na twiki! Nawet jeśli inny studenci (czy pracowników) nic nie poprawiają na twoich stronach twiki, to nie znaczy, że nikt nie to czyta :). Więc warto pokazywać, że zrobiłeś coś interesujący, i pokazuje, że rozumiesz coś o kosmologii. W każdym bądź razie, Andrzej Czarny już ma jej strona przygotowa: http://adjani.astro.uni.torun.pl/cgi-bin/twiki/view/Main/AndrzejCzarny Możesz dać komentarze, poprawić - ale oczywiście, Andrzej też będzie mogł poprawić twoja strona też... :) Więc chyba warto że twoje komentarze są konstruktywne. Andrzej (Cz) - już dałem kilka komentarze. Dotyczączy twoje strony na wikipedii, uważam, że cel wikipedii nie jest tworzony wiele strony niezależny o prawie sam idei - jeśli dwa pojęcie są prawie sam, lepiej zrobić mała poprawka, czy dodawać sekcja, do istniejąca strona niż tworzyć nową. W każdym bądź razie, lepiej dyskutujemy w sposób modularnym :) - tzn że komentarze są na stronach twiki i wikipedii. pozdr boud

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0.1.17 - phase of best match (generalised from -36, 0, +36)
by Boud Roukema 16 Feb '05

16 Feb '05

Witam, http://cosmo.torun.pl/GPLdownload/dodec/circles-0.1.17.tar.gz jest przygotowy. Mo�esz u�ywa� opcja -D �eby produkowa� wykresy i wtedy najintersuj�ce s� gs s_rot_*[tf].ps Pokazuj� S i \sigma dla rozwi�zanie w astro-ph/0402608, oko�o tych 6 okr�gi, ale zamiast tylko fazy -36.0 deg, 0.0 deg i +36.0 deg, jest dla -36.0 deg + beta gdzie beta jest faza miedzy 0 i 360 deg. Je�li hypoteza jest dobra, musi by� maksimum S na 0 i minimum \sigma na 0 deg. Wydaje mi si� �e jest to prawda: maks S i min \sigma s� na 0 deg. Oczywi�cie, to nie *wystarczy* pokazywa� �e hypoteza jest dobra, ale najmniej jest to sp�jny. s_rot_stat.ps -> S s_rot_diff.ps -> \sigma BTW, tu jest program warsztatu w Pary�u - Bartek i ja b�dziemy tam. pozdr boud ----------------------------------------------------------------------------= ---------------------------------------------------------------------- Workshop "Cosmic Topology between WMAP and PLANCK : Facts and Theories" Observatoire de Paris-Meudon, CIAS 8-10 march 2005 Preliminary Program Tuesday 8 March : Topology and CMB 10.00 - J.-P. Luminet : Opening address - Cosmic topology, New Challenges 10.45 - Coffee break 11.00 - G. Starkman : Looking for the topology=20 of the universe using circles in the sky 11.45 - B. Roukema : The Poincar=E9 dodecahedral=20 manifold and matched circles in the first-year=20 WMAP ILC data 12.30 - Discussion and Lunch 14.30 - S. Lustig: CMB Anisotropy of Spherical Spaces 15.15 - A. Riazuelo : The State-of-the-Art of CMB=20 simulations in multiconnected spaces. 16.00 - Coffee Break 16.15 - F. Steiner: CMB Anisotropy of Hyperbolic Spaces 17.00 - General Discussion Wednesday 9 March. Mathematical Methods for Multiconnected Spaces. 10.00 - J. Weeks : Mathematics of Multipoles - Ideas New and Old 10.45 - Coffee break 11.00 - M. Lachieze-Rey : A few remarks on Multipole Vectors 11.45 - J . Gundermann : Eigenmodes in spherical=20 spaces, the case of S3, S3/I*, S3/T* and S3/O*. 12.30 - Discussion and Lunch 14.30 - M. Lachieze-Rey : Mathematical methods=20 for eigenmodes in spherical spaces 15.15 - S. Caillerie : Computation of eigenmodes=20 in Spherical Dodecahedral Space 16.00 - Coffee Break and Discussion Thursday 10 March. Crystallography and Other Methods. Open Discussion. 10.00 - M. Reboucas : title to come 10.45 - Coffee break 11.00 - G. Starkman : The statistical isotropy=20 of the microwave background, or is the low-l=20 microwave background really cosmic? 11.45 - B. Lew : Tests of non-gaussian features=20 of CMBR in WMAP map as hints for non trivial=20 topology 12.30 - Discussion and Lunch 14.30 - B. Roukema : Cosmic crystallography using=20 short-lived objects - active galactic nuclei 15.15 - A. Riazuelo : CMB Polarization in multiconnected spaces. 16.00 - Final Discussion ----------------------------------------------------------------------------= ----------------------------------------------------------------------

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fascist's stuff !!!! -- Your message to Shape-univ awaits moderator approval (fwd)
by Boud Roukema 14 Feb '05

14 Feb '05

Cze¶æ shape-univ, Oko³o tygodniu temu, ilo¶æ spam do shape-univ zosta³ d³u¿szy ni¿ wcze¶niej. (Byæ mo¿e kto¶ pisa³ adres listy w formacie dla spiderów, tzn z @ zamiast z " at " lub " w " lub z "ANTISPAM" lub co¶tam?) Wcze¶niej, parametry listy by³y ¿e *ktokolwiek* z mejlem w ¶wiecie mog³ wysy³aæ mejl bezpo¶rednie na listy, tylko by³oby analizowany przez spamassassin. Teraz, je¶li kto¶ wysy³a mejla od *adresa*, który nie jest zapisany na li¶cie, bêdzie traktowany jak listy od kto¶ nie zapisany, i bêdzie czekaæ dla moderatora. Konkretnie, w version 2.0.11 mailmana, opcja jest: Restrict posting privilege to list members? (member_posting_only) (Details) No Yes Teraz jest "Yes". Mogliby¶my wróciæ do "No", ale wtedy by³oby wiêcej spam (w weekendzie byli 3). Co mo¿esz zrobiæ je¶li masz rozmaity adresy, (np kto¶@astro..., kto¶@astri, kto¶(a)wp.pl, ...), jest zapisaæ siê pod wszystki adresy, http://cosmo.torun.pl/mailman/listinfo/shape-univ Subscribing to Shape-univ Subscribe to Shape-univ by filling out the following form. You will be sent email requesting confirmation, i musisz potwierdziæ, wtedy i¶æ na dolu http://cosmo.torun.pl/mailman/listinfo/shape-univ To change your subscription (set options like digest and delivery modes, get a reminder of your password, or unsubscribe from Shape-univ), either enter your subscription email address: i kliknij na "Edit options" i wtedy zrób: Disable mail delivery Turn this on if you want mail to not be delivered to you for a little while. dla ca³y (oprócz jeden) z twoich adresy. Wtedy bêdziesz otrzymaæ tylko jedna kopia ka¿da mejla na listê (inaczej bêdziesz mieæ pod ka¿dym adresie). pozdr boud > ---------- Forwarded message ---------- > Date: Mon, 14 Feb 2005 10:35:18 +0100 (MET) > From: ****** <******* at astro.uni.torun.pl> > To: Boud Roukema <boud at astro.uni.torun.pl> > Subject: fascist's stuff !!!! -- Your message to Shape-univ awaits > moderator approval (fwd) > > > why is this fascist's stuff is holding me back ? :) Cieszê siê ¿e u¿ytkowniki nie toleruj± cokolwiek cenzury od adminów ;). > ---------- Forwarded message ---------- > Date: Mon, 14 Feb 2005 10:31:01 +0100 > From: shape-univ-admin at cosmo.torun.pl > To: ******* at astro.uni.torun.pl > Subject: Your message to Shape-univ awaits moderator approval > > Your mail to 'Shape-univ' with the subject > > ************ > > Is being held until the list moderator can review it for approval. > > The reason it is being held: > > Post by non-member to a members-only list > > Either the message will get posted to the list, or you will receive > notification of the moderator's decision. >

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bleee 20th hour
by Bartosz Lew 14 Feb '05

14 Feb '05

czesc Boud. Listen if you want to move in to 36 I think I would be good idea you talk to Marek Gleba if he has some switch because there is only one inet cable so it won't do for us two. eemmm, I'm about to finish my own versio of a program that calculates circles on the sky for dodecahedron. :) I was just wandering about the correlator you used. I have 2 remarks: 1) circles of different sizes are represented by different number of pixels. so naturally bigger circles will have bigger S value that the smaller because there is just simply more terms to sum over. like T_i*T_j from 'upper' and 'lower' circle. I'm trying to use the same correlator but normalized to one pixes - i.e. I divide each S value (for each individual circle) by the number of pixels that go into it. What do you think about that ? 2) I'm a bit worried about the fact that you don't use absolue values in the \delta T_i and \delta T_j. Imagine a fluctuations aroud the circle in shape of just a linear function T(dist_along_circle=d) ~ d and indentical in the opposite circle. whaen you correlate this you get zero - that's not much. I know it's not a prove but looks a bit worrying to me,since probably some , any random fluctuations can generate S > 0, while for the perfect match we get S=0. So I indent to use abs(T_i)*abs(T_j) (except from the normalization thing). at the moment the program don't work yet - still debuging :/ pozdr. Bart

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Delivery service mail
by Shapells 02 Feb '05

02 Feb '05

WARNING: This e-mail has been altered by MIMEDefang. Following this paragraph are indications of the actual changes made. For more information about your site's MIMEDefang policy, contact Andrzej Marecki <postmaster@localhost>. For more information about MIMEDefang, see: http://www.roaringpenguin.com/mimedefang/enduser.php3 An attachment named upd02.cpl was removed from this document as it constituted a security hazard. If you require this document, please contact the sender and arrange an alternate means of receiving it.

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Re: tesing dodec
by Boud Roukema 01 Feb '05

01 Feb '05

Witam, > If you think this could be interesting to others you can reply or cc > your opinion on shape-univ. Pewnie jest to interesujący dla shape-univ! :) Daję odpowiedź chyba niedługi... pozdr boud On Sat, 29 Jan 2005, Bartosz Lew wrote: > > Czesc Boud. > > I have a new idea. > I've just compiled the healpix soft and generated a map from > previously calculated power spectrum from new cmbfast package. > > eg. see > http://adjani.astro.uni.torun.pl/~blew/praca/topology/moj-l04-08-anim.gif > or if it's too slow moj-l04-08-anim2.gif :)) > > I was just thinking about that tast of significance of the signal > you've found and what you said that this is a lot of work doesn's seem > to be right to me now. well imagine I provide you a new simulated > map. in fits format for standard LCDM WMAP model in WMAP resolution > and pixelisation scheme. you put this through you pileline for dodec just > to see > what comes out. the rms signal or peak-to-peak dispersion would define > the valid detection threshold for the real map. isn't that right ? > > it doesn't matter that the simulation is performed for simply > connected space. - even better. in fact it's similar as doing the same > thing but on the realmap but with nonphysical case of zero rotation. > > I'll try to do it tommorow on my own with your package if I'll manage > to find out how it works and compile it correctly. > > what do you think. of couser to treat this seriously I must pay more > attention to noise thing in each pixel, size of beam etc but as I > remember I read some good publication about this stuff recently so > perhaps this isn't big problem. > > the bigger problem could possibly arise when I'd like to simulate the > map for some non-trivial topology to get some strong signal in a shape > of spikes in circles correlation function, like cornish et al. did. > > If you think this could be interesting to others you can reply or cc > your opinion on shape-univ. > > bartek > >

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topology vs inflation --- back to study :)
by Bartosz Lew 23 Jan '05

23 Jan '05

hi everybody. here I present an argument which I've just come to. the basic question is: is the compact topology consistent with the inflation. my argument point out that there is a chance that the answer could be not necessarily :) well, one of the prominent predictions of the compact topology is that the power spectrum of fluctuations should have a cut off at some topological size scale since the size of the fluctuations must fit into the the finite size of the fundamental polyhedron. eg. some wavenumber k and some related with it distance - corresponding to some eigenmode of the gravitational potential must be smaller than the size of the fundamental domain. On the other hand the inflation predicts that the eigenmodes of the gravitational fluctuations are independent from scale and yield gaussian distribution. this is inconsistent with the compact topology idea, isn't it ? what do you think about it, Boud, anybody ? pozdrawiam, Bartek

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