JUNE 3-5, 1998




in the framework of the

International School of Astrophysics


Sponsored by the Commission of European Communities



JUNE 3-5, 1998


in the framework of the
International School of Astrophysics

Sponsored by the Commission of European Communities

The fifth COLLOQUE COSMOLOGIE will be held in
Paris at the Observatoire de Paris, from
Wednesday June 3 to Friday June 5, 1998.

The purpose of these meetings is to cover selected topics
of high current interest in the interplay between
cosmology and fundamental physics.

The COLLOQUES COSMOLOGIE are informal meetings.

Topics covered this year include:

Phase Transitions in Cosmology and Evolution out of the Equilibrium of Quantum Fields; Fundamental Strings in Cosmology; The Value of the Hubble Constant; Large-scale Structure of the Universe; Fractals and Scaling Laws in Astrophysics and Galaxy Distributions. AGN and Black-Hole Transients. High Energy Cosmic Rays, Gamma Ray Bursts and Neutrinos in Astrophysics.

The main aim of this series of COLLOQUIA is to put in contact fundamental theoretical physics (including string theory) with real physical problems that arise in the study of the universe. The Paris Cosmology Colloquia bring together physicists, astrophysicists and astronomers. The format of the Colloque is intended to allow easy and fruitful mutual contacts and communication.

The purpose of these Colloquia is an updated understanding, from a fundamental point of view, of the progress and current problems in the early universe, cosmic microwave background radiation, large scale structure, gamma ray bursts and neutrinos in astrophysics, dark matter problem, and the interplay between them. Emphasis is given to the mutual impact of fundamental physics and cosmology, both at theoretical and experimental -or observational- levels.

Deep understanding, clarification, synthesis, a careful interdisciplinarity within a fundamental physics approach, are goals of this series of Colloques.

All Lectures are plenary, have the same duration and are followed by a discussion. No short contributions, neither poster sessions will be scheduled.

Sessions will last for three days leaving time for private discussions and to enjoy the beautiful parisian campus of the Observatoire de Paris (built on orders from Colbert and to plans by Claude Perrault from 1667 to 1672). Sessions will take place at the `Salle du Conseil' in the historic Perrault building under the portraits of Laplace, Le Verrier, Lalande, Arago, Delambre and Louis XIV.

More information can be found in the Proceedings of the Second (1994) and Third Colloquia (1995) published by World Scientific (H J de Vega and N. Sánchez, Editors). The Proceedings of the Fourth Colloquium (1997) will appear soon by the same publisher.

DEMIRM - Observatoire de Paris
61, Avenue de l'Observatoire, 75014 Paris, France.
Tel: 33(0)140512007 ~~-~~ Fax: 33(0)140512002


The Origin of the Highest Energy Particles Observed in the Universe.
o Peter L. BIERMANN, (MPI-Bonn)

Inflationary Dynamics and Cosmological Perturbations.
o Daniel BOYANOVSKY (Pittsburgh)

Baryogenesis above the Fermi Scale.

Large Scale Structure: Recent Work and Plans for the Near Future.
o Guido CHINCARINI (Brera & Milan):

Fractals and Scaling Laws in Galaxy Distributions and in the Interstellar Medium: New Field Theory Approach.
o Héctor J. de VEGA (Paris VI)

Neutrino and Light Elements Abundances.
o Alexander DOLGOV (TAC, Copenhagen)

String Cosmology
o Maurizio GASPERINI (Torino)

Fractality, Lacunarity and the Near-Isotropic Distribution of Galaxies.
o Benoit MANDELBRÖT (IBM Yorktown & Yale)

Scale Invariance of Galaxy Clustering: General Concepts.
o Luciano PIETRONERO (Roma)

From the Gamma-ray Bursts to their Afterglows.
o Luigi PIRO (IAS-Roma)

New Developments in String Gravity and String Cosmology.
o Norma SÁNCHEZ (Obs. Paris-DEMIRM)

Scale Invariance of Galaxy Clustering: Application to the Most Recent Data.
o Francesco SYLOS LABINI (Geneva & Roma)

What is New about Ho.
o Gustav TAMMANN (Basel)

Clusters of Galaxies, AGN at High Redshift and Black-Hole Transients.
o Joachim TRÜMPER (MPE-Garching)

Neutrinos in Astrophysics and Cosmology.
o José W. F. VALLE (Valencia)

The Problem of Initial Conditions in Pre-big Bang Cosmology.




JUNE 3 - 5, 1998


in the framework of the International School of Astrophysics


and sponsored by the Commission of European Communities

The fifth COLLOQUE COSMOLOGIE will be held in Paris at the Observatoire de Paris, from Wednesday June 3 to Friday June 5, 1998. Sessions will last for three days leaving enough time for private discussions and to enjoy the beautiful parisian campus of the Paris Observatory (built on orders from Colbert and to plans by Claude Perrault from 1667 to 1672).

The entrance of the Observatoire de Paris is at 77, Av. Denfert-Rochereau, Paris 75014. [Notice that this differs from the postal address: 61, Avenue de l'Observatoire, Paris 75014, although they are nearby]. The nearest metro station is Denfert-Rochereau (100 m. approx). The RER station Port Royal is about the same distance. You can also reach the Observatoire with the buses 38, 91, 83 and Orlybus.

Sessions will take place at the `Salle du Conseil' in the historic Perrault building. Another lecture hall (`salle de séminaires') will be at the disposal of the COLLOQUE for discussions at the ground floor of bâtiment B of 77, Av. Denfert-Rochereau. Participants are invited to bring their recent preprints and reprints for display. Participants may have lunch at the Observatoire Cafeteria. Tickets will be on sale on Wednesday morning.

A guided tour of the historic Perrault building will be organized. The visit will take 1 hour, approximately. All participants to the COLLOQUE and accompanying persons are kindly invited to it.

Sessions start on Wednesday June 3 in the morning at the `Salle du Conseil'. We shall stick strictly to the timetible during the whole meeting.

Hotel reservations for the invited Lecturers and accompanying persons will be provided by the Colloque organizers.


Hotel du Midi, 4, Av. René Coty, Paris 75014,
tel. 33(0).14327-2325. fax 33(0).14321-2458.
Double room 368f, with shower, WC and TV. Double room 428f, with bathtube, WC and TV.
Breakfast 38f.

Hotel Beauvoir, 43, Av. George Bernanos, Paris 75005,
tel. 33(0).14325-5710, fax-33(0).14354-3187.
Single room 345f. Double room 395f. Twin double rooms 495f. With shower, WC and TV (in double rooms).
Breakfast 35f.

Hotel Pierre Nicole, 39, rue Pierre-Nicole, Paris 75005,
Tel.33 (0).1 4354-7686, fax 33(0).14354-2245.
Single room 330f. Double room 385f. With shower, WC and TV in all rooms.
Breakfast 35f.

In addition, there is a tax in these hotels of 5f per day and per person.


Hotel Floridor, 28, place Denfert-Rochereau, Paris 75014.
Tel. 33(0)1-4321-3553. Fax 33(0)1-4327-6581.
Single room 287f. Double room 315/344f. With shower, WC and TV. Breakfast included.

Hotel de l'Espérance, 1, rue Grancey, Paris 75014. (Near place Denfert-Rochereau).
Tel. 33(0)1-4321-4104.
Single and double rooms with TV, shower and lavatory 260f. Without shower in the room 190F. Breakfast 25f.

Fundación Argentina in the Cité Universitaire.
19, Boulevard Jourdan, Paris 75014, RER Cité Universitaire.
Tel. 33(0)144162900, Fax 33(0)144162905.
Single room with lavatory about 180ff.


La Contre-allée, 83, Av. Denfert-Rochereau. Tel. 014354-9986. Closed Saturday noon and Sunday.
French cuisine. Recommended dishes: salade de lentilles au haddock, carpaccio à l'huile de truffe, saumon à l'unilatérale, canard à l'infusion de sauge et polenta. Dessert: Tarte Tatin tiède et sa glace. Two menus combined with à la carte well conceived: 160 and 190 ff (lunch, incl. wine).
La Chaumière des Gourmets, 22, pl. Denfert-Rochereau. Tel. 014321-2259. Closed Saturday noon and Sunday.
French cuisine, provincial style. Recommended dishes: soupe de poisson, bouillabaisse de morue, pavé de saumon à la bisque d'étrille, magret et galette croustillante, tarte aux pommes tièdes. Menus 165(lunch) - 245 ff.
La Closerie des Lilas, 171, boulevard Montparnasse. Tel. 014326-7050.
Formerly a Café littéraire had as customers Baudelaire, Verlaine, Gide, Jarry, Apollinaire, Modigliani, Hemingway, Lenin and probably Trotsky. Besides the restaurant (à la carte 500-600 ff) there is `brasserie' where meals are also served (à la carte 200-250 ff).
La Tour Mounia, 7, Av. du Général-Leclerc. Tel. 014327-2133.
Moroccan cuisine . Recommended dishes: couscous fin au bouillon dégraissé avec méchoui, pastilla de poulet, briouate de saumon fumé, tajine de kaftas ou d'agneau aux aubergines. Menu 84 ff, 115 ff and 165 ff. Carte : 250-300 ff.
Les Petites Sorcières, 12, rue Liancourt. Tel. 014321-9568.
Closed on saturdays for lunch, and sunday. Terrasse. Parisian bistrot. Recommended dishes: Soupe de lentilles et foie de canard poêlé, crême de potiron au parmesan, clafoutis de petit gris à la provençale, noisettes de lotte fumée aux poivrons, cabillaud rôti au beurre d'ail persillée, steak de canard rôti à la tapenade. Desserts: tarte sablée au chocolat amer et gratin de Golden à la frangipane. Good choice of wines.
Menus: 120ff (lunch) and 165ff.
Le Vin de Rues, 21, rue Boulard. Tel.014322-1978.
Closed on Sunday and Monday. Dinner only on Wednesday and Friday. Terrasse.
Parisian bistrot and bar à vins (somehow like a pub). Lyonnaise cuisine. Rec. dishes: Salade de lentilles aux cochonailles, cervelas à la moutarde et queue de boeuf aux oignons, petit-salé aux lentilles, coeur de veau à l'ail, excelent poulet au vinaigre, lapin morvandelle, gâteau bourguignon cassis, tarte aux pommes Mélanie, vacherin, tarte au citron meringué. Carte 160 ff - 185 ff.
L'Observatoire, 63, Av. Denfert-Rochereau (corner of rue Cassini).
Simple restaurant. It is also a Bar, Café and Brasserie.
Two `formules' at 74 ff and 89 ff, respectively. Menu 150 ff. Large choice of dishes.



It is the oldest observatory still serving.

In 1665 the physicist and astronomer Auzout convinced Colbert and Louis XIV to construct `l'Observatoire Royale'. It is built without wood (to avoid fire) or metal (to avoid magnetic disturbances). At the summer solstice of 1667, the orientation (north-south) is traced in its place by members of the Académie Royale.

Claude Perrault (the architect of the Louvre Colonnade) projected the building and directed its construction. It was finished in 1672. It is a large rectangle (31 m x 29 m) with its four faces oriented with the cardinal points of the compass. The latitude of the south face defines the Paris latitude (48° 50' 11''). The meridian line passing through its center defines the Paris longitude.

The foundations are as deep (27 m) as high is the building itself. The Observatoire is in charge of the French legal time: UTC(OP) and of the Central Bureau of the International Earth Rotation Service.

In 1933, the first speaking clock in the world started to give the accurate time by telephone (tel. 3699) from the ground floor of the Observatoire. The basement of the Observatoire is connected with the Paris catacombs (visits forbidden). The catacombs consist of 65 km of underground galleries.

First, at the head of the Observatoire de Paris was Jean-Dominique Cassini (Cassini I), born in Italy in 1625. He was followed by his son Jacques (Cassini II), his grand-son César-François and his grand-grand-son Jean-Dominique .

The Observatoire was later leaded by Joseph Jerôme Lefrançois de Lalande, Pierre-André Méchain, François Arago (1843-1853), Urbain Le Verrier (1854-1870 and 1873-77) and other distinguished personalities.

Further illustrious scientists worked at the Observatoire like Jean-Baptiste Delambre, Charles Marie de La Condamine and Pierre Simon de Laplace.

One can mention as principals scientific works made in the Observatoire:

The map of the Moon by Cassini I that was the best till the photography was invented.

The discovery of the gap in the Saturne ring by Cassini I and the table of the satellites of Jupiter movements that allowed the danish astronomer Olaüs Römer to show that the speed of light was finite and compute approximately, for the first time in 1676 while he was working at the Observatoire.

Jacques Cassini discovered the proper motion of Arcturus, showing the first that the stars were not fixed.

César-François and Jean-Dominique (IV) Cassini made the first modern map of France from 1750 to 1790.

The units of mass (gramme) and length (meter) were defined following measurements (along the France meridian) and researches made at the Observatoire. Lavoisier worked here on the mass unit.

Arago introduced here the photography in astronomy. In 1845 Hyppolite Fizeau and Léon Foucault obtained the first daguerreotype of the sun.

Foucault in 1850-51 showed manifestly the rotation of the earth with his pendulum hanging in the salle Cassini (after a first experiment at his home, and before the demonstration at the Panthéon).

The works by Le Verrier lead to the discovery of Neptune. His tables of sun and planets positions were used for more than one century. Discrepancies remarked by him between the calculated and observed orbit of Mercury were only solved with the advent of general relativity.

At present the Observatoire de Paris owns three campuses: Paris, the Meudon astrophysics section and the radioastronomy station at Nançay. More than 700 scientists, technicians and administrative staff work there.

Nearby Historic Monuments

The Observatory Fountain (1873) by Davioud is known for its decoration of the four quarters of the globe by Carpeaux (Oceania was omitted for symmetry reasons).

Before the Closerie des Lilas café stands the statue of Marshal Ney by François Rude (1853). Ney was shot nearby in 1815 for his support of Napoleon. Rodin said that this was the nicest statue in Paris.

Inside the Baudelocque Maternity (123, boulevard Port Royal) remain some buildings from the Port Royal abbey. There is the nuns chapel (constructed by Le Pautre, 1646-47), the cloister (1652-55) and the hôtel d'Atry. The benedictian nuns of Saint Bernard were there from 1626 till 1664 when Louis XIV dispersed them due to their jansenist ideas. Afterwards Visitandins nuns stay there till the french revolution. It become then a prison (Lavoisier was jailed here) and a Maternity since 1818.

In the middle of the place Denfert-Rochereau is a small bronze version of Bartholdi's Lion in commemoration of colonel Denfert-Rochereau successful defence of Belfort against the prussians in 1870-71.

In 1, Place Denfert-Rochereau there is the entrance of the Paris Catacombs. Several million skeletons are stored inside. The headquarters of the Résistance - F.F.I. (Interior French Forces) of the Ile-de-France commanded by colonel Henri Rol-Tanguy were here, inside the catacombs during the liberation of Paris in August 1944.

The elegant and vast hôtel Massa, (38, rue du Faubourg Saint-Jacques) was built in 1784 on the Champs-Elysées at the present location of the Virgin Megastore. The duke of Richelieu, the count Marescalchi and the duke of Massa lived there. In 1928 was moved here. It belongs to the Men of Letters Society.

Honoré de Balzac lived from 1829 to 1834 at the house in 6, rue Cassini. He wrote there `Eugénie Grandet', `Le Père Goriot' and may be `La Peau de Chagrin'.

International School of Astrophysics 'D.Chalonge'
Updated 3/98
Back to Chalonge School Page