Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Michael Juda"'
Autor:
Dan Schwartz
Publikováno v:
Vol. 54, Issue 1 (Obituaries, News & Commentaries, Community Reports). 54
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0059c139bbb80518cdc15ba685b1ebbf
https://doi.org/10.3847/25c2cfeb.db5dba79
https://doi.org/10.3847/25c2cfeb.db5dba79
Autor:
S. Deiker, Wilton T. Sanders, Wei Cui, E. Apodaca, R. Almy, Jian-Fu Zhang, Massimiliano Galeazzi, Frederick S. Porter, Enectali Figueroa-Feliciano, Jeffrey P. Morgenthaler, Andrew E. Szymkowiak, Michael Juda, Tatehiro Mihara, W. Bergmann Tiest, Richard Mushotzky, C. K. Stahle, A. Lesser, Dan McCammon, S. H. Moseley, Richard L. Kelley
Publikováno v:
The Astrophysical Journal. 576:188-203
A high spectral resolution observation of the diffuse X-ray background in the 60 - 1000 eV energy range has been made using an array of thirty-six 1 mm^2 micro-calorimeters flown on a sounding rocket. Detector energy resolution ranged from 5-12 eV FW
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6da9acfcd07a4ee89383249ec2a74a86
https://doi.org/10.1086/341727
https://doi.org/10.1086/341727
Autor:
Fabrizio Nicastro, Herman L. Marshall, Antonella Fruscione, Jeremy J. Drake, Deron O. Pease, Vinay L. Kashyap, Klaus Werner, Michael Juda, Brad Wargelin, Stefan Dreizler, Peter E. Freeman
Publikováno v:
The Astrophysical Journal. 572:996-1001
Deep Chandra LETG+HRC-S observations of the isolated neutron star candidate RX J1856.5-3754 have been analysed to search for metallic and resonance cyclotron spectral features and for pulsation behaviour. As found from earlier observations, the X-ray
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::195583a7242c64c2fdd1af739ee20176
https://doi.org/10.1086/340368
https://doi.org/10.1086/340368
Publikováno v:
The Astrophysical Journal. 566:1039-1044
A 50 ksec observation of the Supernova Remnant Cas A was taken using the Chandra X-Ray Observatory High Resolution Camera (HRC) to search for periodic signals from the compact source located near the center. Using the HRC-S in imaging mode, problems
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d875e52452aa3d045f23fac23fc375a
https://doi.org/10.1086/338224
https://doi.org/10.1086/338224
Autor:
Jeffery J. Kolodziejczak, Stephen L. O'Dell, Frits Paerels, Ronald F. Elsner, Allyn F. Tennant, Werner Becker, Stephen S. Murray, Martin C. Weisskopf, Douglas A. Swartz, Michael Juda, Noriaki Shibazaki
Publikováno v:
The Astrophysical Journal. 554:L173-L176
The Chandra X-ray Observatory observed the Crab Nebula and Pulsar using the Low-Energy Transmission Grating (LETG) with the High-Resolution Camera (HRC). Time-resolved zeroth-order images reveal that the pulsar emits x rays at all pulse phases. Analy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b7aa9a032d4a2ebe46ddbe62ce5d34f
https://doi.org/10.1086/321718
https://doi.org/10.1086/321718
Autor:
Antonella Fruscione, Aneta Siemiginowska, Deron O. Pease, Patrick Ogle, Saeqa Dil Vrtilek, Bradford J. Wargelin, Jeremy J. Drake, J. P. Grimes, Herman L. Marshall, S. Mathur, Stephen S. Murray, Daniel E. Harris, Ralph P. Kraft, Daniel A. Schwartz, Michael Juda
Publikováno v:
The Astrophysical Journal. 549:L167-L171
We present images from five observations of the quasar 3C 273 with the Chandra X-ray Observatory. The jet has at least four distinct features which are not resolved in previous observations. The first knot in the jet (A1) is very bright in X-rays. It
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9677a8708ff9a42a10c5fb6c06d9a042
https://doi.org/10.1086/319161
https://doi.org/10.1086/319161
Autor:
David A. Schwartz, R. P. Kraft, Andrea Prestwich, C. Jones, D. Jerius, Ethan J. Schreier, S. S. Murray, Ian N. Evans, Almus T. Kenter, G. Fabbiano, Margarita Karovska, T. Aldcroft, Dong-Woo Kim, M. Elvis, F. A. Primini, Michael Juda, W. Cui, Takashi Isobe, Terrance J. Gaetz
Publikováno v:
Symposium - International Astronomical Union. 205:66-69
Centaurus A (NGC 5128) is a giant early-type galaxy containing the nearest (at 3.5 Mpc) radio-bright Active Galactic Nucleus (AGN). Cen A was observed with the High Resolution Camera (HRC) on the Chandra X-ray Observatory on several occasions since t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4693f4290a58ce82f52391df7f13f936
https://doi.org/10.1017/s0074180900220445
https://doi.org/10.1017/s0074180900220445
Autor:
Mark Baski, Daniel Wong, David Jones, Paul Viens, Michael Juda, Chris Eagan, Harold Rice, Sabina Hurley, Brent S. Williams, Jeffrey D. Holmes, Eric Martin
Publikováno v:
SPIE Proceedings.
The science instruments on-board the Chandra X-ray Observatory may be damaged by high fluxes of energetic particles produced in Solar storms. For twelve years the on-board commanding used to safe the instruments when a high-radiation environment was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cdbe291487f6dffece8c679324a8f079
https://doi.org/10.1117/12.940772
https://doi.org/10.1117/12.940772
Autor:
J. Zhang, Andrew E. Szymkowiak, D. McCammon, Caroline Kilbourn Stahle, R. L. Kelley, Samuel H. Moseley, Michael Juda
Publikováno v:
Journal of Low Temperature Physics. 93:257-262
We have investigated the use of evaporated tin and bismuth films as the absorbing materials in X-ray calorimeters. When the films were deposited directly on monolithic silicon calorimeters, the output signal from both Sn and Bi devices was strongly d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36d84a980de8ba12528f7e32156be475
https://doi.org/10.1007/bf00693429
https://doi.org/10.1007/bf00693429
Autor:
D. McCammon, Jian-Fu Zhang, Andrew E. Szymkowiak, R. L. Kelley, Samuel H. Moseley, Michael Juda, Caroline Kilbourn Stahle
Publikováno v:
Journal of Low Temperature Physics. 93:225-230
We have been developing microcalorimeters for use in X-ray spectroscopy. These devices have very high spectral resolution (several eV) and high intrinsic quantum efficiency, making them particularly useful for astrophysical applications. Work has evo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92f5862347b457e9dc864f8c0c1f23c4
https://doi.org/10.1007/bf00693424
https://doi.org/10.1007/bf00693424