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We have detected molecular and atomic line emission from the hot and warm disks of two Class I sources, IRAS 03445+3242 and IRAS 04239+2436 using the high resolution Immersion GRating INfrared Spectrograph (IGRINS). CO overtone band…

星系天体物理 · 物理学 2016-08-17 Seokho Lee , Jeong-Eun Lee , Sunkyung Park , Jae-Joon Lee , Benjamin Kidder , Gregory N. Mace , Daniel T. Jaffe

We present the mid-infrared spectrum of the planetary nebula IC 2448. In order to determine the chemical composition of the nebula, we use the infrared line fluxes from the Spitzer spectrum along with optical line fluxes from the literature…

天体物理学 · 物理学 2010-11-05 S. Guiles , J. Bernard-Salas , S. R. Pottasch , T. L. Roellig

We simulate the neutrino and $\gamma$-ray emissions of the Galaxy which are originated from the hadronic scattering of cosmic rays (CR) with the interstellar medium (ISM). Rather than assuming a uniform CR density, we estimate the spatial…

天体物理学 · 物理学 2010-10-27 Carmelo Evoli , Dario Grasso , Luca Maccione

Using the excellent observed correlations among various infrared wavebands with 12 and 60 micron luminosities, we calculate the 2-300 micron spectra of galaxies as a function of luminosity. We then use 12 micron and 60 micron galaxy…

天体物理学 · 物理学 2014-10-13 M. A. Malkan , F. W. Stecker

The paper reports a possible application of AgInSe_2 for opto-electronic switching. Material has been studied over a wide range of frequencies (5Hz to 1MHz), through measurements of conductance and capacitance, at different temperatures and…

材料科学 · 物理学 2008-02-03 D. K. Shukla , Manohar Lal , Navdeep Goyal

The determination of chemical abundances in ionized gas nebulae is based on the detection of auroral emission lines, from which it is possible to deduce the line temperatures of several ions. These lines are weak in low excitation objects,…

天体物理学 · 物理学 2007-05-23 Enrique Perez-Montero , Marcelo Castellanos , Angeles I. Diaz

We present one of the first Shanghai Tian Ma Radio Telescope (TMRT) K Band observations towards a sample of 26 infrared dark clouds (IRDCs). We observed the (1,1), (2,2), (3,3), and (4,4) transitions of NH$_{3}$ together with CCS…

SPI-ACS/INTEGRAL is one of the most sensitive orbital gamma-ray detectors in energy range above 80 keV. Since 2002 it registered several thousands of gamma-ray bursts, including the bursts associated with LIGO-Virgo gravitational wave…

高能天体物理现象 · 物理学 2023-08-22 P. Yu. Minaev , A. S. Pozanenko

Sensitivity of future far infrared 10m class space telescopes will be limited by a confusion noise created by distant galaxies. Our primary goal is to create a model that will allow us to estimate the confusion noise parameters of the…

星系天体物理 · 物理学 2020-11-04 A. A. Ermash , S. V. Pilipenko , V. N. Lukash

We present the preliminary results of the observational campaign performed in 2003 to study the Galactic Nucleus with INTEGRAL. The mosaicked images obtained with the IBIS/ISGRI coded aperture instrument in the energy range above 20 keV,…

Immersed reflection gratings improve spectral resolving power by enabling diffraction within a high refractive index medium. This principle has been widely adopted to make grating spectrometers more compact. Conventional immersed gratings…

Gas-based time projection chambers (TPCs) have been shown to be highly sensitive X-ray polarimeters having excellent quantum efficiency while at the same time achieving large modulation factors. To observe polarization of the prompt X-ray…

天体物理仪器与方法 · 物理学 2013-08-06 Z. Prieskorn , J. E. Hill , P. E. Kaaret , J. K. Black , K. Jahoda

The Solenoidal Tracker At RHIC (STAR) uses the Time Projection Chamber (TPC) to perform tracking and particle identification. In order to improve the corrections (such as space charge) and monitor non-static distortions of the TPC,…

仪器与探测器 · 物理学 2018-06-12 N Ermakov

IRIS (InfraRed Imaging Spectrograph) is the diffraction-limited first light instrument for the Thirty Meter Telescope (TMT) that consists of a near-infrared (0.84 to 2.4 $\mu$m) imager and integral field spectrograph (IFS). The IFS makes…

An accurate, closed-form expression evaluating the nonlinear interference (NLI) power in coherent optical transmission systems in the presence of inter-channel stimulated Raman scattering (ISRS) is derived. The analytical result enables a…

信号处理 · 电气工程与系统科学 2019-05-22 Daniel Semrau , Robert I. Killey , Polina Bayvel

Silicon immersion gratings and grisms enable compact, near-infrared spectrographs with high throughput. These instruments find use in ground-based efforts to characterize stellar and exoplanet atmospheres, and in space-based observatories.…

天体物理仪器与方法 · 物理学 2020-12-15 Emily Lubar , Daniel T. Jaffe , Cynthia Brooks , Sierra Hickman , Michael Gully-Santiago , Gregory Mace

The observed durations of prompt gamma-ray emission from gamma-ray bursts (GRBs) are often used to infer the progenitors and energetics of the sources. Inaccurate duration measurements will have a significant impact on constraining the…

高能天体物理现象 · 物理学 2022-03-15 M. Moss , A. Lien , S. Guiriec , S. B. Cenko , T. Sakamoto

The interference gating is a novel method for robust time-resolved electron holographic measurements by directly switching the interference. Here, a new arrangement is presented in which a biprism in the condenser aperture as a fast…

应用物理 · 物理学 2024-05-16 Tolga Wagner , Tore Niermann , Felix Urban , Michael Lehmann

We present SPIRE spectroscopy for 9 early-type galaxies (ETGs) representing the most CO-rich and far-infrared (FIR) bright galaxies of the volume-limited Atlas3D sample. Our data include detections of mid to high J CO transitions (J=4-3 to…

星系天体物理 · 物理学 2019-04-24 Ryen Carl Lapham , Lisa M. Young

We produce synthetic images and SEDs from radiation hydrodynamical simulations of radiatively driven implosion. The synthetically imaged bright rimmed clouds (BRCs) are morphologically similar to those observed in star forming regions.…

太阳与恒星天体物理 · 物理学 2015-06-05 Thomas J. Haworth , Tim J. Harries , David M. Acreman