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Results: 1-17 |
Results: 17
The FIRST Bright Quasar Survey. III. The South Galactic cap
Authors: Becker, RH White, RL Gregg, MD Laurent-Muehleisen, SA Brotherton, MS Impey, CD Chaffee, FH Richards, GT Helfand, DJ Lacy, M Courbin, F Proctor, DD
Citation: Rh. Becker et al., The FIRST Bright Quasar Survey. III. The South Galactic cap, ASTROPH J S, 135(2), 2001, pp. 227-262
Vela pulsar and its synchrotron nebula
Authors: Helfand, DJ Gotthelf, EV Halpern, JP
Citation: Dj. Helfand et al., Vela pulsar and its synchrotron nebula, ASTROPHYS J, 556(1), 2001, pp. 380-391
The hard X-ray luminosity of OB star populations: Implications for the contribution of star formation to the cosmic X-ray background
Authors: Helfand, DJ Moran, EC
Citation: Dj. Helfand et Ec. Moran, The hard X-ray luminosity of OB star populations: Implications for the contribution of star formation to the cosmic X-ray background, ASTROPHYS J, 554(1), 2001, pp. 27-42
PSR J2229+6114: Discovery of an energetic young pulsar in the error box ofthe EGRET source 3EG J2227+6122
Authors: Halpern, JP Camilo, F Gotthelf, EV Helfand, DJ Kramer, M Lyne, AG Leighly, KM Eracleous, M
Citation: Jp. Halpern et al., PSR J2229+6114: Discovery of an energetic young pulsar in the error box ofthe EGRET source 3EG J2227+6122, ASTROPHYS J, 552(2), 2001, pp. L125-L128
A possible X-ray and radio counterpart of the high-energy gamma-ray source3EG J2227+6122
Authors: Halpern, JP Gotthelf, EV Leighly, KM Helfand, DJ
Citation: Jp. Halpern et al., A possible X-ray and radio counterpart of the high-energy gamma-ray source3EG J2227+6122, ASTROPHYS J, 547(1), 2001, pp. 323-333
High-energy astronomy: 60 new octaves of discovery space
Authors: Helfand, DJ
Citation: Dj. Helfand, High-energy astronomy: 60 new octaves of discovery space, PUB AST S P, 113(788), 2001, pp. 1159-1161
First observations of the second-brightest quasar
Authors: Leighly, KM Halpern, JP Helfand, DJ Becker, RH Impey, CD
Citation: Km. Leighly et al., First observations of the second-brightest quasar, ASTRONOM J, 121(6), 2001, pp. 2889-2894
The environments of a complete moderate-redshift sample of first bent-double radio sources
Authors: Blanton, EL Gregg, MD Helfand, DJ Becker, RH Leighly, KM
Citation: El. Blanton et al., The environments of a complete moderate-redshift sample of first bent-double radio sources, ASTRONOM J, 121(6), 2001, pp. 2915-2927
Long-term optical variability of radio-selected quasars from the first survey
Authors: Helfand, DJ Stone, RPS Willman, B White, RL Becker, RH Price, T Gregg, MD McMahon, RG
Citation: Dj. Helfand et al., Long-term optical variability of radio-selected quasars from the first survey, ASTRONOM J, 121(4), 2001, pp. 1872-1885
The first bright quasar survey. II. 60 nights and 1200 spectra later
Authors: White, RL Becker, RH Gregg, MD Laurent-Muehleisen, SA Brotherton, MS Impey, CD Petry, CE Foltz, CB Chaffee, FH Richards, GT Oegerle, WR Helfand, DJ McMahon, RG Cabanela, JE
Citation: Rl. White et al., The first bright quasar survey. II. 60 nights and 1200 spectra later, ASTROPH J S, 126(2), 2000, pp. 133-207
Seeing the whole symphony
Authors: Helfand, DJ
Citation: Dj. Helfand, Seeing the whole symphony, NATUR HIST, 109(1), 2000, pp. 84-87
First bent-double radio sources: Tracers of high-redshift clusters
Authors: Blanton, EL Gregg, MD Helfand, DJ Becker, RH White, RL
Citation: El. Blanton et al., First bent-double radio sources: Tracers of high-redshift clusters, ASTROPHYS J, 531(1), 2000, pp. 118-136
Will GRB 990123 perform an encore?
Authors: Blandford, RD Helfand, DJ
Citation: Rd. Blandford et Dj. Helfand, Will GRB 990123 perform an encore?, M NOT R AST, 305(3), 1999, pp. L45-L48
Rebecca Anne Wood Elson - Obituary
Authors: Helfand, DJ Gilmore, GF
Citation: Dj. Helfand et Gf. Gilmore, Rebecca Anne Wood Elson - Obituary, PHYS TODAY, 52(9), 1999, pp. 74
X-rays from NGC 3256: High-energy emission in starburst galaxies and theircontribution to the cosmic X-ray background
Authors: Moran, EC Lehnert, MD Helfand, DJ
Citation: Ec. Moran et al., X-rays from NGC 3256: High-energy emission in starburst galaxies and theircontribution to the cosmic X-ray background, ASTROPHYS J, 526(2), 1999, pp. 649-664
The first unbiased survey for radio stars
Authors: Helfand, DJ Schnee, S Becker, RH White, RL McMahon, RG
Citation: Dj. Helfand et al., The first unbiased survey for radio stars, ASTRONOM J, 117(3), 1999, pp. 1568-1577
The host galaxy of the gamma-ray burst 971214
Authors: Odewahn, SC Djorgovski, SG Kulkarni, SR Dickinson, M Frail, DA Ramaprakash, AN Bloom, JS Adelberger, KL Halpern, J Helfand, DJ Bahcall, J Goodrich, R Frontera, F Feroci, M Piro, L Costa, E
Citation: Sc. Odewahn et al., The host galaxy of the gamma-ray burst 971214, ASTROPHYS J, 509(1), 1998, pp. L5-L8
Risultati: 1-17 |