... Other references Designation (J2000) Range source MWC 17 01 47 38.46 +60 41 57.3 13.2 B[e] tb4a_01.ps tb4a_01.jpg spc4a_01.ps Y-TiS NIRE-AlS CiD MWC 84 04 19 42.14 +55 59 57.7 11.4 Bep tb4a_02.ps tb4a_02.jpg spc4a_02.ps Y-DoH NIRE-AlS MWC 819 PK 210-00.1 06 44 37.67 +01 19 32.6 14.9 B[e] tb4a_03.ps tb4a_03.jpg spc4a_03.ps MH 260-28 Y-TiS NIRE-AlS , N PN-+HII Reg-ArC He 3-52 CPD-24њ2653 07 39 06.16 -24 45 04.9 11.4 B[e] tb4a_04.ps tb4a_04.jpg spc4a_04.ps AS 160, CD-24њ5721 Y ... Table IVa | ...

Most current theories for magnetospheric emission can be grouped into polar cap, outer gap, and nebular models. These models, at least in some cases, need not be mutually exclusive; the Crab pulsar (among others), for example, shows clear evidence for pulsed emission from the magnetosphere and unpulsed emission from the surrounding nebula. ... This suggestion is strengthened by observation of a distinct soft emission component, consistent with the cooling scenario, from several of these pulsars. ...

Next: Radial velocity of the Up: Optical spectrum of IRAS04296 Previous: Observations and spectra reduction . ... However, molecular emission features are only very rarely observed in the optical spectra of PPNe. ... On the other hand, it is well known that cometary nuclei spectra show prominent Swan band emission. In both spectra of IRAS04296 we have discovered strong emission in the (0;0) and (0;1) bands of the Swan system of the molecule. ... Now consider the case of IRAS04296. ...

... An interactive IRAF task for the analysis of Extreme Ultraviolet Explorer ( EUVE ) emission line spectra is presented. The line flux in extracted spectra may be measured by multiple techniques, including fitting individual lines. ... To aid in identifying lines, the positions of known lines may be marked on the spectrum during the fitting process. Also, model EUVE spectra may be constructed and overlaid using plasma emissivities and source emission measures supplied by the user. ...

Astronomy Picture of the Day . ... 21.05.1997 . ... Palomar Observatory , 200-in Hale Telescope Explanation: New evidence bolsters once controversial claims that Gamma-Ray Bursts (GRBs) are the most powerful explosions ever found by humanity. Two weeks ago, an average GRB became instantly historic when prompt, coincident X-ray and optical emissions were identified. ... If GRBs do occur this far into our universe, then radio emission was predicted to peak about a week after the optical emission . ...

Next: The interstellar medium Up: An overview Previous: Radio pulse characteristics . Mostly the very youngest pulsars . Just 3 pulsars detected at Optical Wavelengths . Crab, Vela, B0540-69 . X-ray - 27 detected, 13 pulsed . Gamma ray - 6 detected all pulsed . Radio emission of spin down energy . ... Need radio ephemeris . 18000 pulse periods elapse between each EGRET photon detected from the Crab pulsar . ...

. Next: Bibliography Up: Optical properties of cosmic Previous: Scattering properties . to be given . root 2003-04-09

... Tonight's Sky . ... The Magazine . News . Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... emission nebulae . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

We would like to announce the release of Version 2.0 of the CHIANTI database for astrophysical spectroscopy. The additions and corrections to the database have been described in a paper `CHIANTI - an atomic database for emission lines, III - Continuum radiation and extension of the ion database' by E. Landi, M. Landini, K.P. Dere, P.R. Young, H.E. Mason and has been published in Astronomy and Astrophysics Supplement Series, 135, 339 ,1999, (Paper III). ... Beryllium sequence . ... Boron sequence . ...

Not on-site at APO, but can be obtained on loan--contact Jeff Morgan at UWash, morgan/astro.washington.edu . CENTER( ) PASSBAND( ) NEBULAR LINE (OR CONTINUUM) . 4861 60 Hbeta 5007 60 [O III] 6301 10 [O I] -- [S III]6312A line is supressed 6563 10 Halpha -- [N II]6584 and 6583 lines are suppressed 6583 10 [N II] -- Halpha line is suppressed 6728 80 [S II]6717+6731 4686 60 He II 4760 100 blue cont or Fe II 8290 195 red cont. See also the Hodge filter set below. ... APO Filters Homepage ...

... Program of the Course of Radio Astronomy . Moscow State University , Physics Department , Astronomy Division , 4 th year, 60 hours in total) . ... Molecular maser emission. ... The emission of the interstellar neutral hydrogen. ... Pacholczyk, A. G. Radio Astrophysics, W. H. Freeman & Co., ... Frontiers of Astrophysics, Avrett, E. H., ed., Harvard University Press, Cambridge, Mass., ... Kaplan, S. A., Pikelner, S. B. The Interstellar Medium, Harvard University Press, Cambridge, Mass., ...

... Field of interest: data analysis and interpretation of X-ray observations of BHC and NS systems, astrophysics of compact objects and related phenomena: X-ray , optical and radio observations , shocks and stellar winds, emission mechanism, the spectral and timing analysis of the X-ray emission from microquasars ( signature of accreting BH), atoll- and Z-sources ( signature of accreting NS), modeling of INTEGRAL images % . ...

... Date : 26/07/2009 . Lieu : Soria, Spain . MatУ?riel de prise de vue : GSO Reflector 200mm f/4, Canon 350D, 21x300s@800iso . Commentaires : The Trifid Nebula (also known as Messier 20 and NGC6514) is an H II region with a remarkable collection of open cluster, emission nebula (the lower, red portion), reflection nebula (the upper, blue portion) and dark nebula (the septation within the emission nebula causing the trifid appearance, also designated Barnard 85). www.astronomica.es . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Figure 1: Dynamic spectrum of Jovian radio emission recorded by Cassini on October 21, 2000 (courtesy of W.S. Kurth, Cassini RPWS Team, University of Iowa). ... We investigate the formation of zebra-like fine spectral structures (consisting of several parallel bands in the dynamic spectrum) in the Jovian broadband kilometric radiation; such radio bursts were observed by Cassini in 2000/2001. ...

... The defining location and structure of airglow needs tomographic processing of data of photometric measurements. ... Both observed function of column brightness and volume emission rate function of airglow may be expanded in a Fourier series. ... There are developed software and made numerical simulation for tomographic data processing. ... In this case airglow has gaussian profiles on both coordinates altitude and latitude. ... Total number of simulated observations is 320. Fig. ...

M. ( / DIAS, Ireland), A. (ISDC, Switzerland) 1 - Key Question Only 3 binary systems regularly observed in TeV: PSR B1259-63 (young pulsar +Be star, P=3.4 y) LSI +61 303 (comp. source + Be star, P=26.42 d) LS 5039 (comp. source + O star, P=3.9 d) Origin of the high-energy emission? ... 2006; Neronov &Chernyakova 2007 4 3.4 years orbital period. e~0.87 Correlated variability with a sharp rise ( "two bumps structure" ) is seen in radio, X-ray (and TeV?) bands. ...

... Based on the measurements of the Stokes parameters in the continuum and in the broad 0.6563 nm hydrogen emission line obtained with the 6-m telescope for the Seyfert galaxy Mkn 6, secular variability of the hydrogen line profile polarization was discovered; a time lag of less than 2 days between the continuum flux and the polarized continuum emission was determined which corresponds to the size of the region where the polarization of the continuum occurs, less than 0.001 pc. ...

WORK CONDUCTED AT RSC ENERGIA . TO DEVELOP NUCLEAR ELECTRIC ROCKET ENGINES . ... The use of nuclear reactors as power plants for electrical rocket engines (RSC Energia concept till 1988) necessitated the development of a high-power Nuclear Power Plant (NPP) based on lithium-niobium technology. ... The electric power source is a fast neutron thermal emission reactor/converter with thermal emission converters of heat into electrical power built into its active zone; . ... MARTION MISSION | ...

... Future seminars . ... Particle acceleration in the interstellar medium and origin of the hard X-ray emission from the Galactic disk " . Prof. V.A. Dogiel (I.E.Tamm Theoretical Physics Division, P.N.Lebedev Physical Institute) . ... Up to now no model has been able to explain the physical origin of this emission. Even the most plausible mechanism of bremsstrahlung radiation requires an energy output in emitting particles higher than the luminosity provided by known Galactic sources. ...

... S. G. Pugacheva. Sternberg State Astronomical Institute, Moscow, 119899, Russia, pugach@sai.msu.ru . ... Sternberg State Astronomical Institute, Moscow University, Russia, pugach@sai.msu.ru . ... Sternberg State Astronomical Institute, Moscow University, 13 Universitetsky pr., ... Sternberg State Astronomical Institute, Lomonosov Moscow State University, Universitetskii pr. ... S. G. Pugacheva and V. V. Shevchenko, Sternberg State Astronomical Institute, Moscow University, 13 Universitetsky pr., ...