Astrophysics

Authors and titles for January 2000

[401] arXiv:astro-ph/0001401 [pdf, other]

Title: Power Density Spectra of GRBs

A.M. Beloborodov, B.E. Stern, R. Svensson

Comments: 9 pages, accepted to ApJ

Journal-ref: Astrophys.J. 535 (2000) 158-166

Subjects: Astrophysics (astro-ph)

[402] arXiv:astro-ph/0001402 [pdf, other]

Title: Chandra X-ray Observations of the Hydra A Cluster: An Interaction Between the Radio Source and the X-Ray-Emitting Gas

B.R. McNamara (CfA), M. Wise (MIT/CSR), P.E.J. Nulsen (U. Wollongong), L.P. David (CfA), C.L. Sarazin (U. Virginia), M. Bautz (MIT/CSR), M. Markevitch (CfA), A. Vikhlinin (CfA), W.R. Forman (CfA), C. Jones (CfA), D.E. Harris (CfA)

Comments: 4 pages, 3 figures; submitted to ApJ Letters

Journal-ref: Astrophys.J.534:L 135,2000

Subjects: Astrophysics (astro-ph)

[403] arXiv:astro-ph/0001403 [pdf, other]

Title: Properties of disk galaxies in a hierarchical formation scenario

V. Avila-Reese (1), C. Firmani (1,2) ((1) Instituto de Astronomia, UNAM, Mexico (2) Osservatorio Astronomico di Brera, Italy)

Comments: 24 pages, includes figures, uses this http URL. Accepted for publication in RevMexAA, Vol. 36, No. 1 (April 2000)

Journal-ref: Rev. Mex. Astron. Astrofis., V. 36, N. 1, pp. 23-42 (2000)

Subjects: Astrophysics (astro-ph)

[404] arXiv:astro-ph/0001404 [pdf, other]

Title: ROSAT observations of X-ray emission from planetary nebulae

Martin A. Guerrero, You-Hua Chu, Robert A. Gruendl (Department of Astronomy, University of Illinois at Urbana-Champaign)

Comments: To be published in The Astrophysical Journal Supplement Series. 21 pages, 7 figures, 5 tables

Journal-ref: Astrophys.J.Suppl. 129 (2000) 295

Subjects: Astrophysics (astro-ph)

[405] arXiv:astro-ph/0001405 [pdf, other]

Title: Hydrodymanic collimation of GRB fireballs

A. Levinson (TAU), D. Eichler (BGU)

Comments: 8 pages, uses REVTEX, submitted to Phys. Rev. Lett

Subjects: Astrophysics (astro-ph)

[406] arXiv:astro-ph/0001406 [pdf, other]

Title: The deuterium abundance in QSO absorption systems: a mesoturbulent approach

Sergei A. Levshakov (Ioffe Institute, <a href="http://St.Petersburg" rel="external noopener nofollow" class="link-external link-http">this http URL</a>, Russia)

Comments: 6 pages, 2 eps figures, this http URL file, to appear in the Proceedings of the IAU Symposium 198 "The light elements and their evolution", November 22-27, 1999, Natal, Brazil

Subjects: Astrophysics (astro-ph)

[407] arXiv:astro-ph/0001407 [pdf, other]

Title: Broad-band BeppoSAX observation of the low-mass X-ray binary X1822-371

A.N. Parmar (1), T. Oosterbroek (1), S. Del Sordo (2), A. Segreto (2), A. Santangelo (2), D. Dal Fiume (3), M. Orlandini (3) ((1) ESA/ESTEC, (2) IFCAI/Palermo, (3) ITESRE/Bologna)

Comments: 7 pages. To appear in A&A

Subjects: Astrophysics (astro-ph)

[408] arXiv:astro-ph/0001408 [pdf, other]

Title: Transformations between the theoretical and observational planes in the HST-NICMOS and WFPC2 photometric systems

Livia Origlia, Claus Leitherer

Comments: 22 pages, 14 figures

Subjects: Astrophysics (astro-ph)

[409] arXiv:astro-ph/0001409 [pdf, other]

Title: Evolution of D and 3He in the Galaxy

Monica Tosi (Osservatorio Astronomico di Bologna, Italy)

Comments: 10 pages including 7 figs, to appear in "The Light Elements and Their Evolution", IAU Symp.198, L. Da Silva, M. Spite, J.R. Medeiros eds, ASP Conf. Ser., in press

Subjects: Astrophysics (astro-ph)

[410] arXiv:astro-ph/0001410 [pdf, other]

Title: New Extreme Synchrotron BL Lac Objects

L. Costamante, G. Ghisellini, P. Giommi, G. Tagliaferri, A. Celotti, M. Chiaberge, L. Chiappetti, G. Fossati, L. Maraschi, E. Pian, F. Tavecchio, A. Treves, A. Wolter

Comments: To appear in the proceedings of the conference "X-Ray Astronomy '99", Bologna, Italy, September 1999; 4 pages, 3 figures, uses this http URL. Corrected authors' list

Subjects: Astrophysics (astro-ph)

[411] arXiv:astro-ph/0001411 [pdf, other]

Title: Search for Astronomical Sites in Developing Countries and their Preventive Protection

F. R. Querci (Obs. Midi-Pyrenees, Toulouse), M. Querci (Obs. Midi-Pyrenees, Toulouse)

Comments: in Proc. IAU Symposium 196 on "Preserving the Astronomical Sky", held in Vienna (Austria), 12-16 July 1999, in conjunction with UNISPACE III, to be published in A.S.P. Conf. Series (eds. R.J. Cohen and W.T. Sullivan)

Subjects: Astrophysics (astro-ph)

[412] arXiv:astro-ph/0001412 [pdf, other]

Title: The enigmatic Soft X-ray AGN RX J0134.2--4258

D. Grupe, K.M. Leighly, H.-C. Thomas, S.A. Laurent-Muehleisen

Comments: 13 pages (including 13 Figures), accepted for in A&A (main journal), also available at this http URL

Subjects: Astrophysics (astro-ph)

[413] arXiv:astro-ph/0001413 [pdf, other]

Title: Microjansky radio sources in DC0107-46 (Abell 2877)

A. Hopkins, A. Georgakakis, L. Cram, J. Afonso, B. Mobasher

Comments: 14 pages, 3 figures, Accepted by ApJS (v128n2p JUN 2000 issue)

Journal-ref: Astrophys.J.Suppl.128:469-478,2000

Subjects: Astrophysics (astro-ph)

[414] arXiv:astro-ph/0001414 [pdf, other]

Title: Predicting Future Duration from Present Age: A Critical Assessment

Carlton M. Caves (University of New Mexico)

Comments: 17 pages, standard LaTeX; to be published in Contemporary Physics

Journal-ref: Contemp.Phys. 41 (2000) 143-153

Subjects: Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc); Data Analysis, Statistics and Probability (physics.data-an)

[415] arXiv:astro-ph/0001415 [pdf, other]

Title: Measuring the Diffuse Optical Light in Abell 1651

Anthony H. Gonzalez, Ann I. Zabludoff, Dennis Zaritsky, Julianne J. Dalcanton

Comments: 28 pages including 8 figures. Color version of figure 6 available at this http URL . Accepted to ApJ

Journal-ref: Erratum-ibid. 611 (2004) 1208

Subjects: Astrophysics (astro-ph)

[416] arXiv:astro-ph/0001416 [pdf, other]

Title: Magnetic field and unstable accretion during AM Herculis low states

J.M. Bonnet-Bidaud (1), M. Mouchet (2,3), N.M. Shakhovskoy (4), T.A. Somova (5), N.N. Somov (5), I.L. Andronov (6), D. de Martino (7), S.V. Kolesnikov (6), Z. Kraicheva (8) ((1)Service d'Astrophysique, DSM/DAPNIA/SAp, CE Saclay, (2)DAEC, Observatoire de Paris Section de Meudon, (3)Université Denis Diderot, (4)Crimean Astrophysical Observatory, (5)Special Astrophysical Observatory, (6)Department of Astronomy Odessa University, (7)Osservatorio Astronomico di Capodimonte, (8)Institute of Astronomy Bulgaria)

Comments: accepted in Astronomy & Astrophysics (Main Journal), 10 pages, 6 Figures, Latex

Subjects: Astrophysics (astro-ph)

[417] arXiv:astro-ph/0001417 [pdf, other]

Title: OGLE Cepheids have Lower Amplitudes in SMC than in LMC

Bohdan Paczynski, Bart Pindor

Comments: 5 pages with 1 figure, AASTex latex, submitted on January 24, 2000 to The Astrophysical Journal Letters

Subjects: Astrophysics (astro-ph)

[418] arXiv:astro-ph/0001418 [pdf, other]

Title: The Magnetic Fields of the Universe and Their Origin

Stirling A. Colgate, Hui Li (LANL)

Comments: 10 pages, 1 figure (this http URL), invited talk at IAU 195

Subjects: Astrophysics (astro-ph)

[419] arXiv:astro-ph/0001419 [pdf, other]

Title: Constraints on Photometric Calibration from Observations of High-Redshift Type Ia Supernovae

David W. Hogg (IAS)

Comments: Submitted to AJ. Comments greatly appreciated

Subjects: Astrophysics (astro-ph)

[420] arXiv:astro-ph/0001420 [pdf, other]

Title: Screw Instability and Blandford-Znajek Mechanism

Li-Xin Li

Comments: 10 pages, 1 figure

Journal-ref: Astrophys.J. 531 (2000) L111

Subjects: Astrophysics (astro-ph)

[421] arXiv:astro-ph/0001421 [pdf, other]

Title: A Natural Formalism for Microlensing

Andrew Gould (Ohio State University)

Comments: 8 pages, 1 figure tells all. Interested parties are requested to vote on a proposed standard for microlensing notation given in the appendix. Submitted to ApJ

Subjects: Astrophysics (astro-ph)

[422] arXiv:astro-ph/0001422 [pdf, other]

Title: Gas Stripping of Dwarf Galaxies in Clusters of Galaxies

Masao Mori (University of Tokyo), Andreas Burkert (Max-Planck-Institut fuer Astronomie)

Comments: 9 pages, 6 figures; accepted for publication in ApJ

Subjects: Astrophysics (astro-ph)

[423] arXiv:astro-ph/0001423 [pdf, other]

Title: BeppoSAX and Chandra Observations of SAXJ0103.2-7209=2E0101.5-7225: a new Persistent 345s X-ray Pulsar in the SMC

G.L. Israel, S. Campana, S. Covino, D. Dal Fiume, T.J. Gaetz, S. Mereghetti, T. Oosterbroek, M. Orlandini, A.N. Parmar, D. Ricci, L. Stella

Comments: 4 pages. Accepted for publication in ApJ Letters. Emulateapj style used

Subjects: Astrophysics (astro-ph)

[424] arXiv:astro-ph/0001424 [pdf, other]

Title: Stellar Dynamics and the implications on the merger evolution in NGC6240

M. Tecza, R. Genzel, L. J. Tacconi, S. Anders, L. E. Tacconi-Garman, N. Thatte

Comments: 34 pages, 11 figures, using AASTEX 5.0rc3.1, paper submitted to the Astrophysical Journal, revised version

Subjects: Astrophysics (astro-ph)

[425] arXiv:astro-ph/0001425 [pdf, other]

Title: Black Hole Formation and Gamma Ray Bursts

Remo Ruffini

Comments: 10 pages, 4 figures, to appear in the proceedings of the ESO workshop on "Black Holes in Binaries and Galactic Nuclei", in honour of Prof. R. Giacconi, edited by L. Kaper, E.P.J. van den Heuvel, and P.A. Woudt, and printed in the series ESO Astrophysics Symposia by Springer (2000)

Subjects: Astrophysics (astro-ph)

[426] arXiv:astro-ph/0001426 [pdf, other]

Title: Early Galactic Evolution of Carbon, Nitrogen and Oxygen

G. Israelian, R. Garcia Lopez, Rafael Rebolo

Comments: 10 pages, 3 figures, To appear in the proceedings of the conference "The Chemical Evolution of The Milky Way: Stars versus Clusters", eds. F. Matteucci and F. Giovannelli, Vulcano, Italy, September 20-24 1999

Subjects: Astrophysics (astro-ph)

[427] arXiv:astro-ph/0001427 [pdf, other]

Title: Note on the Origin of the Highest Energy Cosmic Rays

Pierre Billoir, Antoine Letessier-Selvon (LPNHE Paris)

Comments: 3 pages, 2 figures

Subjects: Astrophysics (astro-ph)

[428] arXiv:astro-ph/0001428 [pdf, other]

Title: Stellar Dynamics in the Galactic centre: Proper Motions and Anisotropy

R. Genzel (1), C. Pichon (2 and 3), A. Eckart (1), O.E. Gerhard (2), T. Ott (1) ((1) MPE, (2) Univ. Basel, (3) Obs. de Strasbourg)

Comments: 35 pages, 17 figures, submitted to M.N.R.A.S

Journal-ref: Mon.Not.Roy.Astron.Soc. 317 (2000) 348

Subjects: Astrophysics (astro-ph)

[429] arXiv:astro-ph/0001429 [pdf, other]

Title: Comptonization of the Cosmic Microwave Background by Relativistic Plasma

Torsten A. Ensslin, Christian R. Kaiser (MPI fuer Astrophysik, Garching)

Comments: 15 pages, 9 figures, Accepted by Astronomy & Astrophysics; corrected Planck sensitivity in Fig. 9; added Appendix about detectability of the Cluster rSZ Effect; added paragraph about electron cooling in radio plasma

Journal-ref: Astron.Astrophys.360:417-430,2000

Subjects: Astrophysics (astro-ph)

[430] arXiv:astro-ph/0001430 [pdf, other]

Title: Outbursts of EX Hydrae: mass-transfer events or disc instabilities?

Coel Hellier (Keele University), Jonathan Kemp, T. Naylor, Frank M. Bateson, Albert Jones, Danie Overbeek, Rod Stubbings, Koji Mukai

Comments: To appear in MNRAS (8 pages; 9 figs)

Subjects: Astrophysics (astro-ph)

[431] arXiv:astro-ph/0001431 [pdf, other]

Title: A GRB Tool Shed

David J. Haglin (1), Richard J. Roiger (1), Jon Hakkila (1), Geoffrey Pendleton (2), Robert Mallozzi (2) ((1) Minnesota State University, Mankato, (2) University of Alabam in Huntsville)

Comments: 5 pages, 1 figure, presented at the 5th Huntsville Gamma-Ray Burst Symposium

Subjects: Astrophysics (astro-ph)

[432] arXiv:astro-ph/0001432 [pdf, other]

Title: Power filtration of CMB observational data

D. Novikov (1,2,3,4), P. Naselsky (5,6), H.E. Jorgensen (3), P.R. Christensen (5,7), I. Novikov (3,4,5,8), H.U. Norgaard-Nielsen (9) ((1) Ludwig Maximilians Universitat, (2) University of Oxford,(3)Copenhagen University Observatory, (4) Astro-Space Center of P.N. Lebedev Physical Institute, (5) Theoretical Astrophysics Center,(6)Rostov State University, (7) Niels Bohr Institute, (8) NORDITA,(9) Danish Space Research Institute)

Comments: 17 pages; 4 figures; submitted to International Journal of Modern Physics

Subjects: Astrophysics (astro-ph)

[433] arXiv:astro-ph/0001433 [pdf, other]

Title: Theoretical Implications of Diffuse Non-Thermal Emission from Clusters of Galaxies

Torsten A. Ensslin (MPI fuer Astrophysik, Garching)

Comments: 8 pages, 2 figures, LaTeX, uses this http URL, invited talk at IAU 199 `The Universe at Low Radio Frequencies' in Pune, India, 1999

Subjects: Astrophysics (astro-ph)

[434] arXiv:astro-ph/0001434 [pdf, other]

Title: Broad-band colour evolution of star clusters

Leo Girardi (Padova)

Comments: 6 pages, to appear in proc. of Strasbourg workshop "Massive Stellar Clusters", ASP Conf. Ser., eds. A. Lancon, C. Boily

Subjects: Astrophysics (astro-ph)

[435] arXiv:astro-ph/0001435 [pdf, other]

Title: The MACHO Project 9 Million Star Color-Magnitude Diagram of the Large Magellanic Cloud

C. Alcock, R.A. Allsman, D.R. Alves, T.S. Axelrod, A. Basu, A.C. Becker, D.P. Bennett, K.H. Cook, A.J. Drake, K.C. Freeman, M. Geha, K. Griest, L. King, M.J. Lehner, S.L. Marshall, D. Minniti, C. Nelson, B.A. Peterson, P. Popowski, M.R. Pratt, P.J. Quinn, C.W. Stubbs, W. Sutherland, A.B. Tomaney, T. Vandehei, D.L. Welch (The MACHO Collaboration)

Comments: to appear in the Astronomical Journal, 49 pages, 12 figures, this http URL

Subjects: Astrophysics (astro-ph)

[436] arXiv:astro-ph/0001436 [pdf, other]

Title: X-Ray Afterglows of Gamma-Ray Bursts

Luigi Piro (IAS/CNR, Roma)

Comments: 14 pages, 8 figures, Proc.s. of "X-Ray Astronomy '99:Stellar Endpoints, AGN and the Diffuse X-ray Background", September 6-10, 1999, CNR Bologna

Subjects: Astrophysics (astro-ph)

[437] arXiv:astro-ph/0001437 [pdf, other]

Title: SAX J1810.8-2609: A New Hard X-ray Bursting Transient

L. Natalucci, A. Bazzano, M. Cocchi, P. Ubertini, J. Heise, E. Kuulkers, J.J.M. in 't Zand, M.J.S. Smith

Comments: 15 pages, 4 figures, accepted for publication in ApJ

Subjects: Astrophysics (astro-ph)

[438] arXiv:astro-ph/0001438 [pdf, other]

Title: Prompt Optical Observations of Gamma-ray Bursts

Carl Akerlof, Richard Balsano, Scott Barthelmy, Jeff Bloch, Paul Butterworth, Don Casperson, Tom Cline, Sandra Fletcher, Fillippo Frontera, Galen Gisler, John Heise, Jack Hills, Kevin Hurley, Robert Kehoe, Brian Lee, Stuart Marshall, Tim McKay, Andrew Pawl, Luigi Piro, John Szymanski, Jim Wren

Comments: 4 pages, 3 figures, submitted to ApJ Letters

Subjects: Astrophysics (astro-ph)

[439] arXiv:astro-ph/0001439 [pdf, other]

Title: Hydrodynamic Simulations of the Bardeen-Petterson Effect

Richard P. Nelson, John C.B. Papaloizou

Comments: 18 pages, 14 figures. Accepted for publication in M.N.R.A.S. A version with posctcript figures included can be obtained from this http URL

Journal-ref: Mon.Not.Roy.Astron.Soc. 315 (2000) 570

Subjects: Astrophysics (astro-ph)

[440] arXiv:astro-ph/0001440 [pdf, other]

Title: Estimating reaction rates and uncertainties for primordial nucleosynthesis

Kenneth M. Nollett, Scott Burles

Comments: 20 pages, 17 figures, accepted for publication in Physical Review D

Journal-ref: Phys.Rev. D61 (2000) 123505

Subjects: Astrophysics (astro-ph)

[441] arXiv:astro-ph/0001441 [pdf, other]

Title: Geometrodynamics of Variable-Speed-of-Light Cosmologies

Bruce A. Bassett (University of Oxford, Portsmouth University), Stefano Liberati (SISSA, INFN; Trieste), Carmen Molina-Paris (Los Alamos), Matt Visser (Washington University in Saint Louis)

Comments: 19 pages, latex 209, revtex 3.1; To appear in Physical Review D; Numerous small changes of presentation and emphasis; new section on the entropy problem; references updated; central results unaffected

Journal-ref: Phys.Rev.D62:103518,2000

Subjects: Astrophysics (astro-ph); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Phenomenology (hep-ph)

[442] arXiv:astro-ph/0001442 [pdf, other]

Title: RR Lyrae - Theory vs Observation

Zoltan Kollath, J. Robert Buchler, Michael Feuchtinger

Comments: 6 pages, 5 figures (revised april 2000, revisions relatively minor)

Journal-ref: ApJ, Vol. 540, p. 468-473 (2000)

Subjects: Astrophysics (astro-ph)

[443] arXiv:astro-ph/0001443 [pdf, other]

Title: Scale Dependent Dimension of Luminous Matter in the Universe

Per Bak, Kan Chen

Comments: 6 pages, 2 figures

Subjects: Astrophysics (astro-ph); Statistical Mechanics (cond-mat.stat-mech); Adaptation and Self-Organizing Systems (nlin.AO)

[444] arXiv:astro-ph/0001444 [pdf, other]

Title: Possible solar cycle variations in the convection zone

Sarbani Basu, H. M. Antia

Comments: To appear in Solar Physics

Journal-ref: Solar Phys. 192 (2000) 449

Subjects: Astrophysics (astro-ph)

[445] arXiv:astro-ph/0001445 [pdf, other]

Title: The FIR-Radio Correlation of Wolf-Rayet Galaxies and the Role of Star Formation in LINERs

L. Ji, Y. Chen, J. H. Huang, Q. S. Gu, S. J. Lei (Department of Astronomy, Nanjing University, Nanjing, China)

Comments: 9 pages, 4 figures, to be published in Astronomy & Astrophysics

Subjects: Astrophysics (astro-ph)

[446] arXiv:astro-ph/0001446 [pdf, other]

Title: Preheated Advection Dominated Accretion Flow

Myeong-Gu Park (1), Jeremiah P. Ostriker (2) ((1) Kyungpook National University, Korea, (2) Princeton University)

Comments: 41 pages with 10 postscript figures (aastex5). Submitted to ApJ

Subjects: Astrophysics (astro-ph)

[447] arXiv:astro-ph/0001447 [pdf, other]

Title: Growth of a Vortex Mode during Gravitational Collapse Resulting in Type II Supernova

Tomoyuki Hanawa, Tomoaki Matsumoto

Comments: AAS LaTeX, 14 pages including 6 figures, submitted to Astrophysical Journal in January

Subjects: Astrophysics (astro-ph)

[448] arXiv:astro-ph/0001448 [pdf, other]

Title: Evaporation and Condensation Processes of Giant Molecular Clouds in a Hot Plasma

Wolfgang Vieser, Gerhard Hensler

Comments: to appear in: 1999, Proc. "Astrophysical Dynamics", eds. D. Berry et al., Astroph. Sp. Sci., in press

Journal-ref: Astrophys.Space Sci. 272 (2000) 189-196

Subjects: Astrophysics (astro-ph)

[449] arXiv:astro-ph/0001449 [pdf, other]

Title: Optical surface photometry of radio galaxies - II. Observations and data analysis

F. Govoni, R. Falomo, G. Fasano, R. Scarpa

Comments: 9 pages, plus 17 .gif figures, accepted by Astronomy and Astrophysics, Supplement Series

Subjects: Astrophysics (astro-ph)

[450] arXiv:astro-ph/0001450 [pdf, other]

Title: Frequency resolved spectroscopy of Cyg X-1: fast variability of the reflected emission in the soft state

M. Gilfanov (1,2), E.Churazov (1,2), M. Revnivtsev (2,1) ((1) MPA, Garching; (2)IKI, Moscow)

Comments: submitted to MNRAS

Journal-ref: Mon.Not.Roy.Astron.Soc. 316 (2000) 923

Subjects: Astrophysics (astro-ph)