Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Steinle, H."'
Coordinated observations X-ray+optical observations of two southern X-ray binaries, the black hole candidate XTE J1746-321 and the neutron star accreter Cir X-1 (a `microquasar') are reported. With a photon counting optical photometer on the 1.9m tel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f52ec1c473f03b6673d85553b5a1b5a0
http://arxiv.org/abs/astro-ph/0404524
http://arxiv.org/abs/astro-ph/0404524
Autor:
Collmar, W., Olaf Reimer, Bennett, K., Bloemen, H., Hermsen, W., Lichti, Gg, Ryan, J., Schonfelder, V., Steinle, H., Williams, Or, Bottcher, M.
Publikováno v:
ResearcherID
The Compton Gamma-Ray Observatory (CGRO) experiments EGRET and COMPTEL observed the Virgo sky region continuously for 7 weeks between December 10, 1996 and January 28, 1997. The prominent quasar 3C~273 was found to be the brightest source in gamma-ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c9025d844b0cdafc9dfe0bc7a1bf6cf
http://arxiv.org/abs/astro-ph/0001204
http://arxiv.org/abs/astro-ph/0001204
During five ROSAT HRI observations in July 1995, a bright X-ray source (designated 1RXH J132519.8-430312) was detected 2.5' south-west of the nucleus of NGC 5128 (Centaurus A) at the outer regions of the elliptical galaxy. At that time it was the bri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94282d2864ef5e63c1e1e99321182dc3
Autor:
Collmar, W., Bennett, K., Bloemen, H., Hermsen, W., Ryan, J., Schoenfelder, V., Steinle, H., Williams, O. R.
The COMPTEL experiment aboard the COMPTON Gamma-Ray Observatory (CGRO) has observed the prominent TeV-blazars Mkn 421 and Mkn 501 many times between the start of its mission in April '91 and December '98. This paper reports first COMPTEL results from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42281147e7d7382ad7028a95510733af
Autor:
Collmar, W., Bennett, K., Bloemen, H., Blom, J. J., Hermsen, W., Lichti, G. G., Ryan, J., Schoenfelder, V., Stacy, J. G., Steinle, H., Williams, O. R., Winkler, C.
The COMPTEL experiment aboard CGRO, exploring the previously unknown sky at MeV-energies, has so far detected 10 Active Galactic Nuclei (AGN): 9 blazars and the radio galaxy Centaurus A. No Seyfert galaxy has been found yet. With these results COMPTE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59785722d87ccf0717cb8f14c2d736d4
Autor:
van Dijk, R., Bennett, K., Bloemen, H., Collmar, W., Connors, A., Diehl, R., Hermsen, W., Lichti, G. G., McConnell, M., Much, R., Schoenfelder, V., Steinle, H., Strong, A., Tavani, M.
Publikováno v:
Astronomy & Astrophysics, 315, 485-492. EDP Sciences
We present an analysis of COMPTEL observations made between November 1991 and May 1994 of 2CG 135+01, a bright gamma-ray source located near the Galactic plane. At energies above 1 MeV, an excess consistent with the position of 2CG 135+01 is detected
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e32522bff432a7a296bc4a38decbbb5c
https://dare.uva.nl/personal/pure/en/publications/comptel-detection-of-the-highenergy-gammaray-source-2cg-13501(43bc313c-b471-4487-896d-55721e9393ec).html
https://dare.uva.nl/personal/pure/en/publications/comptel-detection-of-the-highenergy-gammaray-source-2cg-13501(43bc313c-b471-4487-896d-55721e9393ec).html
Autor:
Collmar, W., Bennett, K., Bloemen, H., Blom, Jj, Hermsen, W., Lichti, Gg, Martin Pohl, Ryan, J., Schonfelder, V., Stacy, Jg, Steinle, H., Williams, Or
Publikováno v:
ResearcherID
The COMPTEL observations of the blazar-type quasar PKS 0528+134 in the energy range 0.75 MeV to 30 MeV carried out between April 1991 and September 1994 have been analyzed. During the first two years PKS 0528+134 was most significantly detected at en
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d95d21070621066a5021aa538ba9904
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:A1997YJ08200006&KeyUID=WOS:A1997YJ08200006
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:A1997YJ08200006&KeyUID=WOS:A1997YJ08200006
Autor:
Laura Maraschi, Giorgio Matt, E. Massaro, A. Preite-Martinez, C. M. Urry, C. Perola, Werner Collmar, Paola Grandi, Helmut Steinle, Mariateresa Fiocchi
Publikováno v:
593 (2003): 160–168.
info:cnr-pdr/source/autori:Grandi, P.; Fiocchi, M.; Perola, C. G.; Urry, C. M.; Maraschi, L.; Massaro, E.; Matt, G.; Preite-Martinez, A.; Steinle, H.; Collmar, W./titolo:BeppoSAX Observations of Centaurus A: The Hard Continuum and the Iron-Line Feature/doi:/rivista:/anno:2003/pagina_da:160/pagina_a:168/intervallo_pagine:160–168/volume:593
info:cnr-pdr/source/autori:Grandi, P.; Fiocchi, M.; Perola, C. G.; Urry, C. M.; Maraschi, L.; Massaro, E.; Matt, G.; Preite-Martinez, A.; Steinle, H.; Collmar, W./titolo:BeppoSAX Observations of Centaurus A: The Hard Continuum and the Iron-Line Feature/doi:/rivista:/anno:2003/pagina_da:160/pagina_a:168/intervallo_pagine:160–168/volume:593
The radio galaxy Centaurus A was observed by the BeppoSAX satellite five times from 1997 to 2000. From July 6 1999 to August 17 1999, the source was also simultaneously pointed by COMPTEL on-board of the satellite CGRO. Centaurus A has a complex spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8607339e483ec7e88ce707bc28e8e566
http://arxiv.org/abs/astro-ph/0304244
http://arxiv.org/abs/astro-ph/0304244