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THE ASTROPHYSICAL JOURNAL LETTERS CONTENTS OF VOLUME 501, PART 2 1998 JULY 1, Number | \ GAMMA-RAY HALO “GLOW” FROM PRIMORDIAL BLACK HOLE EVAPORATION DavidB . Cline HIGH-RESOLUTION OPTICAL AND NEAR-INFRARED IMAGING OF THE C QUASAR RX J0911.4 I. Burud, F. Courbin, C. Lidman, A. O. Jaunsen, J. Hjorth, R. Ostensen, M. 1. Andersen, J. V asel Wucknitz, G. Mevlan, P. Magain, R. Stabell, & S. Refsdal INFRARED EMISSION-LINE GALAXIES ASSOCIATED WITH DAMPED Lva AND STRONG METAL ABSORBER REDSHIFTS F. Mannucci, D. Thompson, S. V. W. Beckwith, & G. M. Willige: THE TeV SPECTRUM OF MARKARIAN 501 F. W. Samuelson, S. D. Biller, 1. H. Bond, P. J. Bovle, S. M. Bradbury, A. Breslin, J. H. Buckle D. A. Carter-Lewis, M. Catanese, M. F. Cawley, D. J. Fegan, J. P. Finley, J. A. Gaidos, T. Hall R. W. Lessard, J. E. McEnery, C. Masterson, J. Quinn, A. J. Rodgers, H. J. Rose, G. H. Sembi T. C. Weekes, & J. Zweerink GRAVITATIONAL WAVES FROM GALAXY CLUSTERS: A NEW OBSERVABLE EFFECT Vicent Quilis, José M. Ibanez, & Diego Sade: DUSTY TORIO F SEYFERT NUCLEI PROBED BY THE WATER VAPOR MASER EMISSION: HOW LAI THE DUSTY TORI? Yoshiaki Taniguchi & Takashi Muravama OCCULTATION MAPPINGO F THE CENTRAL ENGINE IN THE ACTIVE GALAXY MCG Barry McKernan & Tahir Yaqoob THE AGES OF THE GLOBULAR CLUSTERS IN THE FORNAX DWARF GALAXY R. Buonanno, C. E. Corsi, R. Zinn, F. Fusi Pecci, E. Hardy, & N. B. Suntzeff X-RAY VARIABILITY AS A PROBE OF ADVECTION-DOMINATED ACCRETION IN LOW-LUMINOSITY ACTIVE GALACTIC NUCLEI 1. Prak, T. Yaqoob, R. Mushotzky, P. Serlemitsos, & R. Griffiths AN X-RAY MICROLENSING TEST OF AU-SCALE ACCRETION DISK STRUCTURE IN Q2237 \wsunort Yonehara, Shin Mineshige, Tadahiro Manmoto, Jun Fukue, Masavuki Umemura, & Edwin 1 THE LMC MICROLENSING EVENTS: EVIDENCE FOR A WARPED AND FLARING MILKY WAY DISK V. Wyn Evans, Geza Gvuk, Michael S. Turner, & James Binne\ ON COMPTON SCATTERING SCENARIOS FOR BLAZAR FLARES Viarkus Boucher & Charles D. Dermes TRANSIENT GAMMA-RAY SPECTROMETER MEASUREMENTS OF THE POSITRON ANNIHILATION SPECTRUM FROM THE GALACTIC CENTER Vi. J. Harris, B. J. Teegarden, T. L. Cline, N. Gehrels, D. M. Palmer, Ro Ramaty, & H. Seifert GALACTIC COSMIC-RAY CONFINEMENT TIME: ULYSSES HIGH ENERGY TELESCOPE MEASUREMENTS OF THI SECONDARY RADIONUCLIDE ‘Be I. J. Connell THE SECOND-PARAMETER EFFECT IN METAL-RICH GLOBULAR CLUSTERS 1. V. Sweigart & M. Catelan ULTRAVIOLET IMAGING TELESCOPE OBSERVATIONS OF THE HORIZONTAL BRANCH IN M13 Ronald A. Parise, Ralph C. Bohlin, Susan G. Neff, Robert W. O'Connell, Morten S. Roberts, Stephen P. Maran, Andrew h, & Theodore P. Stecher CONTENTS SPECTROSCOPIC EVIDENCE FOR NONUNIFORM STARSPOT PROPERTIES ON II PEGASI Douglas O'Neal, Steven H. Saar, & James E. Neff THE JEANS MASS CONSTRAINT AND THE FRAGMENTATION OF MOLECULAR CLOUD CORES A/anP . Boss FAINT, LARGE-SCALE Ha FILAMENTS IN THE MILKY WAY L. M. Haffner, R. J. Reynolds, & S. L. Tufte GRAVITATIONAL RADIATION AND ROTATION OF ACCRETING NEUTRON STARS Lars Bildsten THE BEAT-FREQUENCY INTERPRETATION OF KILOHERTZ QUASI-PERIODIC OSCILLATIONS IN NEUTRON STAR LOW-MASS X-RAY BINARIES Dimitrios Psaltis, Mariano Méndez, Rudy Wijnands, Jeroen Homan, Peter G. Jonker, Michiel van der Klis, Frederick K. Lamb, Erik Kuulkers, Jan van Paradijs, & Walter H. G. Lewin ANGULAR BROADENING OF NEARBY PULSARS VW. C. Britton, C. R. Gwinn, & M. J. Ojeda UNRAVELING THE 10 MICRON “SILICATE” FEATURE OF PROTOSTARS: THE DETECTIONO F FROZEN INTERSTELLAR AMMONIA I}. H. Lacy, H. Faraji, S. A. Sandford, & L. J. Allamandola SILICON NANOPARTICLES: SOURCE OF EXTENDED RED EMISSION? Adolf N. Witt, Karl D. Gordon, & Douglas G. Furton HUBBLE SPACE TELESCOPE V-BAND IMAGING OF THE BIPOLAR PROTO-PLANETARY NEBULA IRAS 17150-3224 Sun Kwok, Kate Y. L. Su, & Bruce J. Hrivnak DISCOVERY OF A 6.4 MICRON DUST FEATURE IN HYDROGEN-POOR PLANETARY NEBULAE J. Patrick Harrington, Nancy J. Lame, Kazimierz J. Borkowski, Jesse D. Bregman, & Zlatan 1. Tsvetano UVCS/SOHO EMPIRICAL DETERMINATIONS OF ANISOTROPIC VELOCITY DISTRIBUTIONS IN THE SOLAR CORONA I. L. Kohl, G. Noci, E. Antonucci, G. Tondello, M. C. FE. Huber, S. R. Cranmer, L. Strachan, A. V. Panasyuk, L. D. Gardner, M. Romoli, §. Fineschi, D. Dobrzycka, J. C. Raymond, P. Nicolosi, O. H. W. Siegmund, D. Spadaro, C. Benna, A. Ciaravella, S. Giordano, S. R. Habbal, VM. Karovska, X. Li, R. Martin, J. G. Michels, A. Modigliani, G. Naletto, R. H. O'Neal, C. Pernechele, G. Poletto, P. L. Smith, & R. M. Suleiman THE EFFECT OF TEMPERATURE ANISOTROPY ON OBSERVATIONS OF DOPPLER DIMMING AND PUMPING IN THE INNER CORONA Ying Li, Shadia Rifai Habbal, John L. Kohl, & Giancarlo Noci PROBING THE SUBSURFACE STRUCTURE OF ACTIVE REGIONS WITH THE PHASE INFORMATION IN ACOUSTIC IMAGING L139 Hueit-Ru Chen, Dean-Yi Chou, Hsiang-Kuang Chang, Ming-Tsung Sun, Sheng-Jen Yeh, Barry LaBonte, & the TON Team NETWORK ACTIVITY AND THE EVAPORATIVE FORMATION OF POLAR PLUMES Y.-M. Wang THE SUBMILLIMETER-WAVE SPECTRUM OF KCCH (X‘3) I. Xin & L. M. Ziurys ERRATUM PARITY VIOLATION IN NEUTRINO TRANSPORT AND THE ORIGIN OF PULSAR KICKS D. Lai & Y.-Z. Qian INSTRUCTIONS TO AUTHORS OF LETTERS. AND RECENT LETTERS ABSTRACTS AND OTHER Inside Back Cover BIBLIOGRAPHICAL SERVICES INSTRUCTIONS FOR ELECTRONIC MANUSCRIPT SUBMISSION Back Cover 1998 JULY 10, Number 2 ON SPECTRAL AND TEMPORAL VARIABILITY IN BLAZARS AND GAMMA-RAY BURSTS Charles D. Derme GIANT SHELLS AND STELLAR ARCS AS RELICS OF GAMMA-RAY Bl RST EXPLOSIONS Yuri N. Efremov, Bruce G. Elmegreen, & Paul W. Hodge CONTENTS A MULTIPLE MERGER MODEL FOR THE ORIGIN OF ULTRALUMINOUS INFRARED GALAXIES Yoshiaki Taniguchi & Yasuhiro Shioya NEAR-INFRARED OBSERVATIONS OF A REDSHIFT 4.92 GALAXY: EVIDENCE FOR SIGNIFICANT DUST ABSORPTION B. T. Soifer, G. Neugebauer, M. Franx, K. Matthews, & G. D. Illingworth DOES THE NUMBER DENSITY OF ELLIPTICAL GALAXIES CHANGE AT z Tomonori Totani & Yuzuru Yoshii XTE J1739—302: AN UNUSUAL NEW X-RAY TRANSIENT D. M. Smith, D. Main, F. Marshall, J. Swank, W. A. Heindl, M. Leventhal, J. J. M. in ‘t Zand, & J. Heise DYNAMICAL COUPLING OF THE CORE SUPERFLUID IN NEUTRON STARS M. Jahan Miri PURBULENCE AND ANGULAR MOMENTUM TRANSPORT IN A GLOBAL ACCRETION DISK SIMULATION Philip J. Armitage THE PROTOSTELLAR ORIGIN OF A CS OUTFLOW IN S68N GraceA . Wolf-Chase, Mary Barsony, H. Alwyn Wootten, Derek Ward-Thompson, Patrick J. Lowrance, JoelH . Kastner, & Joseph P. McMullin THE MASS DISTRIBUTION OF EXTRASOLAR PLANET CANDIDATES AND SPECTROSCOPIC BINARY L199 LOW-MASS COMPANIONS Tsevi Mazeh, Dorit Goldberg, & David W. Latham FRAGMENTATION OF MOLECULAR CLOUDS: THE INITIAL PHASE OF A STELLAR CLUSTER Ralf S. Klessen, Andreas Burkert, & Matthew R. Bate THE He'/H* ABUNDANCE IN THE ORION NEBULA FROM INFRARED SPACE OBSERVATORY MEASUREMENTS Robert H. Rubin, Sean W. J. Colgan, Reginald J. Dufour, & Steven D. Lord ENERGY DISTRIBUTION OF HEATING PROCESSES IN THE QUIET SOLAR CORONA Sim Krucker & ArnoldO . Benz OBSERVATION OF QUASI-PERIODIC COMPRESSIVE WAVES IN SOLAR POLAR PLUMES C. EF. DeForest & J. B. Gurman THE ROTATION PERIOD OF C/1995 O1 (HALE-BOPP) Javier Licandro, Luis R. Bellot Rubio, Hermann Boehnhardt, Ricard Casas, Benedikt Géetz, Angel Gomez, Laurent Jorda, Mark R. Kidger, David Osip, Nanci Sabalisck, Pablo Santos, Miquel Serra-Ricart, Gian Paolo Tozzi, & Richard West HNC AND HCN IN COMETS S. D. Rodgers & S. B. Charnley INSTRUCTIONS TO AUTHORS OF LETTERS, AND RECENT LETTERS ABSTRACTS AND OTHER Inside Back Cove } BIBLIOGRAPHICAL SERVICES INSTRUCTIONS FOR ELECTRONIC MANUSCRIPT SUBMISSION Back Cover }