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We present mid-IR imaging observations of a high Galactic latitude cirrus obtained with the ISO camera ISOCAM at 6" angular resolution. The observations were done with two filters LW2 (5-8.5 microns) and LW3 (12-18 microns) that measure…

Astrophysics · Physics 2009-11-07 M. -A. Miville-Deschenes , F. Boulanger , G. Joncas , E. Falgarone

We present new L-band ($1\mbox{--}2$ GHz) observations of the nearby spiral galaxy M33 with 80 pc resolution obtained with the Karl G. Jansky Very Large Array. The HI observations, combined with HI measurements from the Green Bank…

We observed the scintillation pattern of nine bright pulsars at 324 MHz and three at 1.68 GHz and analyzed the wavenumber spectrum which is related to electron density variations of the plasma turbulence of the interstellar medium. For all…

Astrophysics of Galaxies · Physics 2022-12-21 N. Bartel , M. S. Burgin , E. N. Fadeev , M. V. Popov , N. Ronaghikhameneh , T. V. Smirnova , V. A. Soglasnov

Starting from 1960s Type III-like bursts (Type III bursts with high drift rates) in a wide frequency range from 300 to 950MHz have been observed. These new bursts observed at certain frequency being compared to the usual Type III bursts at…

We present a set of 6-12 micron ISOPHOT-S spectra of the general interstellar medium of the Milky Way. This part of the spectrum is dominated by a series of strong, wide emission features commonly called the Unidentified Infrared Bands. The…

Astrophysics · Physics 2009-11-07 J. Kahanpaa , K. Mattila , K. Lehtinen , C. Leinert , D. Lemke

Gaseous flows inside and outside galaxies are key to understanding galaxy evolution, as they regulate their star formation activity across cosmic time. We study the ISM kinematics of 330 CIII or HeII emitters, using far-UV ISM absorption…

We collected data for two samples of normal and interacting galaxies for a total of 2953 galaxies having fluxes in one or more of the following wavebands: FIR, 21 cm line, CO(1-0) lines and soft X-ray. The large set of data obtained allowed…

Astrophysics · Physics 2007-05-23 V. Casasola , L. Piovan , G. Galletta , D. Bettoni , E. Merlin

Imaging of optical Galactic cirrus, the spatially resolved form of diffuse Galactic light, provides important insights into the properties of the diffuse interstellar medium (ISM) in the Milky Way. While previous investigations have focused…

The propagating intensity disturbances (PIDs) in plumes are still poorly understood and their identity (magnetoacoustic waves or flows) remains an open question. We investigate PIDs in five plumes located in the northern polar coronal hole…

We present an extended analysis of the high dispersion IUE spectra of SN 1993J in M81, based on the improved data in the IUE final archive. Eight interstellar absorption components can be identified in the velocity range from -200 km/s to…

Astrophysics · Physics 2007-05-23 Ole Marggraf , Klaas S. de Boer

A complete sample of 33 sources believed to be starbursts ("5.8micron-peakers") was selected in the (0.5 sq. deg.) J1046+56 field with selection criteria F_(24micron)>400muJy, the presence of a redshifted stellar emission peak at 5.8um, and…

Mid-infrared emission features probe the properties of ionized gas, and hot or warm molecular gas. The Orion Bar is a frequently studied photodissociation region (PDR) containing large amounts of gas under these conditions, and was observed…

Astrophysics of Galaxies · Physics 2024-07-03 Dries Van De Putte , Raphael Meshaka , Boris Trahin , Emilie Habart , Els Peeters , Olivier Berné , Felipe Alarcón , Amélie Canin , Ryan Chown , Ilane Schroetter , Ameek Sidhu , Christiaan Boersma , Emeric Bron , Emmanuel Dartois , Javier R. Goicoechea , Karl D. Gordon , Takashi Onaka , Alexander G. G. M. Tielens , Laurent Verstraete , Mark G. Wolfire , Alain Abergel , Edwin A. Bergin , Jeronimo Bernard-Salas , Jan Cami , Sara Cuadrado , Daniel Dicken , Meriem Elyajouri , Asunción Fuente , Christine Joblin , Baria Khan , Ozan Lacinbala , David Languignon , Romane Le Gal , Alexandros Maragkoudakis , Yoko Okada , Sofia Pasquini , Marc W. Pound , Massimo Robberto , Markus Röllig , Bethany Schefter , Thiébaut Schirmer , Benoit Tabone , Sílvia Vicente , Marion Zannese , Sean W. J. Colgan , Jinhua He , Gaël Rouillé , Aditya Togi , Isabel Aleman , Rebecca Auchettl , Giuseppe Antonio Baratta , Salma Bejaoui , Partha P. Bera , John H. Black , Francois Boulanger , Jordy Bouwman , Bernhard Brandl , Philippe Brechignac , Sandra Brünken , Mridusmita Buragohain , Andrew Burkhardt , Alessandra Candian , Stéphanie Cazaux , Jose Cernicharo , Marin Chabot , Shubhadip Chakraborty , Jason Champion , Ilsa R. Cooke , Audrey Coutens , Nick L. J. Cox , Karine Demyk , Jennifer Donovan Meyer , Sacha Foschino , Pedro García-Lario , Maryvonne Gerin , Carl A. Gottlieb , Pierre Guillard , Antoine Gusdorf , Patrick Hartigan , Eric Herbst , Liv Hornekaer , Lina Issa , Cornelia Jäger , Eduardo Janot-Pacheco , Olga Kannavou , Michael Kaufman , Francisca Kemper , Sarah Kendrew , Maria S. Kirsanova , Pamela Klaassen , Sun Kwok , Álvaro Labiano , Thomas S. -Y. Lai , Bertrand Le Floch , Franck Le Petit , Aigen Li , Hendrik Linz , Cameron J. Mackie , Suzanne C. Madden , Joëlle Mascetti , Brett A. McGuire , Pablo Merino , Elisabetta R. Micelotta , Jon A. Morse , Giacomo Mulas , Naslim Neelamkodan , Ryou Ohsawa , Alain Omont , Roberta Paladini , Maria Elisabetta Palumbo , Amit Pathak , Yvonne J. Pendleton , Annemieke Petrignani , Thomas Pino , Elena Puga , Naseem Rangwala , Mathias Rapacioli , Jeonghee Rho , Alessandra Ricca , Julia Roman-Duval , Joseph Roser , Evelyne Roueff , Farid Salama , Dinalva A. Sales , Karin Sandstrom , Peter Sarre , Ella Sciamma-O'Brien , Kris Sellgren , Sachindev S. Shenoy , David Teyssier , Richard D. Thomas , Adolf N. Witt , Alwyn Wootten , Nathalie Ysard , Henning Zettergren , Yong Zhang , Ziwei E. Zhang , Junfeng Zhen

The analysis of narrowband drifting of type III-like structures in radio bursts dynamic spectra allows to obtain unique information about primary energy release mechanisms in solar flares. The SSRT spatially resolved images and a high…

Solar and Stellar Astrophysics · Physics 2015-06-05 N. S. Meshalkina , A. T. Altyntsev , D. A. Zhdanov , S. V. Lesovoi , A. A. Kochanov , Yan Yihua , Tan Chengming

We theoretically and numerically investigate intermodal four-wave-mixing in km-long fibers, where random birefringence fluctuations are present along the fiber length. We identify several distinct regimes that depend on the relative…

Two discrete-time interference channel models are developed for information transmission over a single span of optical fiber using wavelength-division multiplexing (WDM) and lumped amplification. The models are derived from the nonlinear…

Information Theory · Computer Science 2017-08-14 Hassan Ghozlan , Gerhard Kramer

The analysis of multiwavelength properties of propagating disturbances (PDs) using Hinode/EIS observations is presented. Quasi-periodic PDs were mostly interpreted as slow magnetoacoustic waves in early studies, but recently suggested to be…

Solar and Stellar Astrophysics · Physics 2015-01-19 Tongjiang Wang , Leon Ofman , Joseph M. Davila

Coronal mass ejections (CMEs) are major drivers of space weather in the Solar System, but their occurrence rate on other stars is unknown. A characteristic (deca-)metric radio burst with a time-frequency drift, known as a Type II radio…

The presence of stable, compact circumbinary discs of gas and dust around post-asymptotic giant branch (post-AGB) binary systems has been well established. We focus on one such system: IRAS 08544-4431. We present an interferometric…

Solar and Stellar Astrophysics · Physics 2021-06-16 A. Corporaal , J. Kluska , H. Van Winckel , D. Bollen , D. Kamath , M. Min

We present a synthesis of fast radio burst (FRB) morphology (the change in flux as a function of time and frequency) as detected in the 400-800 MHz octave by the FRB project on the Canadian Hydrogen Intensity Mapping Experiment (CHIME/FRB),…

Intermediate mass black holes (IMBHs) may be the link between stellar mass holes and the supermassive variety in the nuclei of galaxies, and globular clusters (GCs) may be one of the most promising environments for their formation. Here we…

High Energy Astrophysical Phenomena · Physics 2023-12-20 Vivian L. Tang , Piero Madau , Elisa Bortolas , Eric W. Peng