The Dirichlet Problem for Curvature Equations in Riemannian Manifolds

We prove the existence of classical solutions to the Dirichlet problem for a class of fully nonlinear elliptic equations of curvature type on Riemannian manifolds. We also derive new second derivative boundary estimates which allows us to extend some of the existence theorems of Caffarelli, Nirenberg and Spruck [4] and Ivochkina, Trundinger and Lin [19] to more general curvature functions and less convex domains.Comment: 32 pages, no figures. Final version. Paper accepted to publication in Indiana University Mathematics Journa

Infrared Observations of AGN

We present results from an imaging and spectroscopic study of the dust properties of Seyfert galaxies in the 1-10um range. The data are compared to state of the art models of torus emission to constrain geometrical and physical properties of the obscuring medium.Comment: 2 pages, to appear in the IAU Symp.No.222 proceedings:"The Interplay among Black Holes, Stars and ISM in Galactic Nuclei", Gramado, Brazil, March 1-5, 200

Searching for molecular outflows in Hyper-Luminous Infrared Galaxies

We present constraints on the molecular outflows in a sample of five Hyper-Luminous Infrared Galaxies using Herschel observations of the OH doublet at 119 {\mu}m. We have detected the OH doublet in three cases: one purely in emission and two purely in absorption. The observed emission profile has a significant blueshifted wing suggesting the possibility of tracing an outflow. Out of the two absorption profiles, one seems to be consistent with the systemic velocity while the other clearly indicates the presence of a molecular outflow whose maximum velocity is about ~1500 km/s. Our analysis shows that this system is in general agreement with previous results on Ultra-luminous Infrared Galaxies and QSOs, whose outflow velocities do not seem to correlate with stellar masses or starburst luminosities (star formation rates). Instead the galaxy outflow likely arises from an embedded AGN.Comment: Accepted for publication in MNRAS. 13 pages, 11 figures, 4 table

PENGARUH SELF-TALK TERHADAP KEPERCAYAAN DIRI PADA ATLET PANAHAN REMAJA

Penelitian ini dilakukan dengan tujuan untuk mengetahui pengaruh self-talk terhadap kepercayaan diri pada atlet panahan remaja. Penelitian ini menggunakan metode kuantitatif korelasional dengan jumlah responden sebanyak 128 orang yang merupakan atlet panahan remaja di seluruh Indonesia dengan rentang usia 12-21 tahun. Kuesioner penelitian menggunakan Self-Talk Questionnaire (S-TQ) for Archery Athletes yang dibuat oleh peneliti dengan reliabilitas 0.901 dan Instrument of Self-Confidence for Archery Athletes yang dimodifikasi peneliti dari Instrument Development of Self-Confidence for Badminton Athletes. Teknik sampel yang digunakan adalah teknik voluntary sampling dan teknik analisis data menggunakan teknik analisis regresi sederhana. Hasil menunjukkan bahwa terdapat pengaruh self-talk terhadap kepercayaan diri pada atlet panahan remaja dengan besaran pengaruh sebesar 45.1%. Rekomendasi penelitian ini adalah bagi atlet panahan untuk melakukan self-talk kognitif dan motivasional agar dapat mencapai performa yang optimal, bagi pelatih dapat menjadi acuan kepada atlet dalam melakukan self-talk positif, dan bagi peneliti selanjutnya untuk mengeksplorasi aspek kognitif dan aspek motivasional pada self-talk yang berpengaruh terhadap kepercayaan diri ditinjau dari tujuan (goals) yang ingin dicapai atlet

An infrared study of the double nucleus in NGC3256

We present new resolved near and mid-IR imaging and N-band spectroscopy of the two nuclei in the merger system NGCA3256, the most IR luminous galaxy in the nearby universe. The results from the SED fit to the data are consistent with previous estimates of the amount of obscuration towards the nuclei and the nuclear star formation rates. However, we also find substantial differences in the infrared emission from the two nuclei which cannot be explained by obscuration alone. We conclude that the northern nucleus requires an additional component of warm dust in order to explain its properties. This suggests that local starforming conditions can vary significantly within the environment of a single system.Comment: Accepted for publication (MNRAS