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Astrophysics Data System (ADS)

Query Results from Astronomy Database

Retrieved 180 abstracts, starting with number 501. Total number selected: 680

Bibcode	Score	Date	Available Items
Authors	Title		Access Control Help

1981ApJ...251L.105S	0.344	12/1981	A F R C S
STERN, R. A.; NOUSEK, J. A.; NUGENT, J. J.; AGRAWAL, P. C.; RIEGLER, G. R.; GARMIRE, G. P.; ROSENTHAL, A.; PRAVDO, S. H.	X-ray and optical observations of HD 155638 - A remarkably active cool star

1981ApJ...251...15T	0.344	12/1981	A R C
TENNANT, A. F.; MUSHOTZKY, R. F.; BOLDT, E. A.; SWANK, J. H.	Rapid X-ray variability in the Seyfert galaxy NGC 6814

1981xras.nasa..599R	0.344	11/1981	A
ROTHSCHILD, R. E.	Hard X-ray astrophysics

1981plap.rept..225R	0.344	11/1981	A
ROSSI, B.	Evolution of X-ray astronomy

1981ApJ...250..733K	0.344	11/1981	A R C S
KAHN, S. M.; CHARLES, P. A.; BOWYER, S.; BLISSETT, R. J.	Soft X-ray spectral variations in Scorpius X-1

1981ApJ...250..723R	0.344	11/1981	A R C S
ROTHSCHILD, R. E.; GRUBER, D. E.; KNIGHT, F. K.; MATTESON, J. L.; NOLAN, P. L.; SWANK, J. H.; HOLT, S. S.; SERLEMITSOS, P. J.; MASON, K. O.; TUOHY, I. R.	The X-ray spectrum of AM Herculis from 0.1 to 150 keV

1981ApJ...250..216G	0.344	11/1981	A C
GALAS, C. M. F.; VENKATESAN, D.; GARMIRE, G.	Soft X-ray observation of supernova remnant IC 443

1981AJ.....86.1585H	0.344	11/1981	A F R C S N
HUTTER, D. J.; MUFSON, S. L.	An optical and X-ray survey of s-type Markarian galaxies

1981A&A...103..367M	0.344	11/1981	A
MEIDAV, M.; SADEH, D.	The stability of the pulse intensity of the X-ray pulsar in the Crab Nebula

1981prnc.rept.....T	0.344	10/1981	A
TURNER, E. L.; GELLER, M. J.	Study of the fluctuations in the cosmic X-ray background

1981AsAer..19...30F	0.344	10/1981	A
FRIEDMAN, H.	The astronomical horizon

1981ApJ...249..406M	0.344	10/1981	A R C
MARSCHER, A. P.; BRODERICK, J. J.	X-ray and VLBI radio observations of the quasars NRAO 140 and NRAO 530

1981ApJ...249...35H	0.344	10/1981	A R C
HOLMAN, G. D.; MCKEE, J. D.	HEAO A-2 observations of non-Abell Zwicky clusters containing extended radio sources

1981ApJ...249L..21S	0.344	10/1981	A F R C S
STEINER, J. E.; SCHWARTZ, D. A.; JABLONSKI, F. J.; BUSKO, I. C.; WATSON, M. G.; PYE, J. P.; MCHARDY, I. M.	Identification of 4U 1849-31 with V1223 Sagittarii and discovery of optical pulsations

1981TecN....9...32G	0.344	09/1981	A
GERIL, N.	X-ray astronomy and the AXAF space observatory

1981Natur.293..275N	0.344	09/1981	A C S
NOLAN, P. L.; GRUBER, D. E.; KNIGHT, F. K.; MATTESON, J. L.; ROTHSCHILD, R. E.; MARSHALL, F. E.; LEVINE, A. M.; PRIMINI, F. A.	Hard X-ray spectrum of Cygnus X-1

1981ApJ...248L..61M	0.344	09/1981	A F C S N
MUFSON, S. L.; HUTTER, D. J.	The detection of X-ray emission from the BL Lacertae object Markarian 180

1981N85-12840.....D	0.344	08/1981	A
DEZOTTI, G.; BOLDT, E. A.; CAVALIERE, A.; DANESE, L.; FRANCESCHINI, A.; MARSHALL, F. E.; SWANK, J. H.; SZYMKOWIAK, A. E.	On syntheses of the X-ray background with power-law sources

1981ApJ...247..994W	0.344	08/1981	A C S
WHITE, N. E.; BECKER, R. H.; BOLDT, E. A.; HOLT, S. S.; SERLEMITSOS, P. J.; SWANK, J. H.	A 5.57 hour modulation of the X-ray flux from 4U 1822-37

1981ApJ...247..803R	0.344	08/1981	A R C S
REICHERT, G.; MASON, K. O.; CHARLES, P. A.; BOWYER, S.; LEA, S. M.; PRAVDO, S.	Low energy X-ray emission from five galaxy cluster sources

1981ApJ...247..632W	0.344	07/1981	A C
WOOD, K. S.; BYRAM, E. T.; CHUBB, T. A.; FRIEDMAN, H.; MEEKINS, J. F.; SHARE, G. H.; YENTIS, D. J.	A 4.2 second period in the gamma-ray burst of 1977 October 29

1981ApJ...247L..31W	0.344	07/1981	A F C S
WORRALL, D. M.; KNIGHT, F. K.; NOLAN, P. L.; ROTHSCHILD, R. E.; LEVINE, A. M.; PRIMINI, F. A.; LEWIN, W. H. G.	The hard X-ray spectrum of X Persei

1981PhDT.........1T	0.344	06/1981	A
TENNANT, A. F.; MUSHOTZKY, R. F.; BOLDT, E. A.; SWANK, J. H.	Rapid X-ray variability in the Seyfert galaxy NGC 6814

1981N81-29060.....W	0.344	06/1981	A
WHITE, N. E.; MARSHALL, F. E.	The 805s X-ray pulsar H2252-035

1981IAUC.3611....2W	0.344	06/1981	E
WALTER, F. M.; WHITE, N. E.; SWANK, J.	4U 1916-05

1981ApJ...246..951B	0.344	06/1981	A C
BYRNE, P. F.; LEVINE, A. M.; BAUTZ, M.; HOWE, S. K.; LANG, F. L.; PRIMINI, F. A.; LEWIN, W. H. G.; GRUBER, D. E.; KNIGHT, F. K.; NOLAN, P. L.	High energy X-ray observations of the 38-second pulsar

1981ApJ...246..494N	0.344	06/1981	A C S
NOLAN, P. L.; GRUBER, D. E.; MATTESON, J. L.; PETERSON, L. E.; ROTHSCHILD, R. E.; DOTY, J. P.; LEVINE, A. M.; LEWIN, W. H. G.; PRIMINI, F. A.	Rapid variability of 10-140 keV X-rays from Cygnus X-1

1981ApJ...246L.121C	0.344	06/1981	A F R C S
CHARLES, P. A.; KAHN, S. M.; MASON, K. O.; TUOHY, I. R.	Low-energy X-ray line emission from IC 443

1981ApJ...245..799J	0.344	05/1981	A C S N
JOHNSTON, M. D.; BRADT, H. V.; DOXSEY, R. E.; MARSHALL, F. E.; SCHWARTZ, D. A.; MARGON, B.	The Ophiuchus cluster - A bright X-ray cluster of galaxies at low galactic latitude

1981Natur.290..573S	0.344	04/1981	A C S
STERN, R. A.; RIEGLER, G. R.; AGRAWAL, P. C.	The very soft X-ray transient H1853 + 60

1981Natur.290..572N	0.344	04/1981	A C S
NAGASE, F.; HAYAKAWA, S.; KUNIEDA, H.; MAKINO, F.; MASAL, K.; TAWARA, Y.; INOUE, H.; KOYAMA, K.; MAKISHIMA, K.; MATSUOKA, M.	Spin-down episode of the X-ray pulsar Vela X-1

1981Natur.290..483B	0.344	04/1981	A C
BOLDT, E.; LEITER, D.	Precursor active galaxies and the cosmic X-ray background

1981N81-26998.....U	0.344	03/1981	A
URRY, C. M.; MUSHOTZKY, R. F.	PKS 2155-304 relativistically beamed synchrotron radiation from BL LAC object

1981ApJ...244.1001M	0.344	03/1981	A C S
MIDDLEDITCH, J.; MASON, K. O.; NELSON, J. E.; WHITE, N. E.	4U 1626-67 - A prograde spinning X-ray pulsar in a 2500 s binary system

1981ApJ...244L..85W	0.344	03/1981	A F C S
WHITE, N. E.	An 81 minute modulation of the X-ray flux from 2A 0311-227

1981Ap&SS..75..163K	0.344	03/1981	A C
KANE, S. R.	Multi-spacecraft observations of solar hard X-ray bursts

1981Ap&SS..75...21K	0.344	03/1981	A C
KNIGHT, F. K.; MATTESON, J. L.; PETERSON, L. E.	The spectra and light curves of two gamma-ray bursts

1981ApJ...243..690K	0.344	02/1981	A C S N
KONDO, Y.; WORRALL, D. M.; MUSHOTZKY, R. F.; HACKNEY, R. L.; HACKNEY, K. R. H.; OKE, J. B.; YEE, H. K. C.; NEUGEBAUER, G.; MATTHEWS, K.; FELDMAN, P. A.; BROWN, R. L.	Quasi-simultaneous observations of BL Lac object Mrk 501 in X-ray, UV, visible, IR, and radio frequencies

1981xras.proc...51S	0.344	00/1981	A
SMITH, B. W.	X-ray spectra of supernova remnants

1981SSRv...30..385B	0.344	00/1981	C
BONAZZOLA, S.	Search for fast time fluctuations in Cygnus-X1 and Herculis-X1

1981PhDT.........3K	0.344	00/1981	A
KNIGHT, F. K.	X-ray and gamma-ray observations of pulsed emission from radio pulsars

1981N81-20001.....W	0.344	01/1981	A
WHITE, N. E.; BECKER, R. H.; BOLDT, E. A.; HOLT, S. S.; SERLEMITSOS, P. J.; SWANK, J. H.	A 5.57 hour modulation of the X-ray flux of 4U1822-37: A new model for CYG X-3

1981MNRAS.194..219D	0.344	01/1981	A F
DEAN, A. J.; DIPPER, N. A.	An evaluation of the background effects in actively shielded hard X-ray telescopes at balloon altitudes

1981ApJ...243..244B	0.344	01/1981	A C S
BAI, T.	The 35 day dependence of the pulse shape of Hercules X-1

1981ApJ...243L...9R	0.344	01/1981	A F R C S N
ROTHSCHILD, R. E.; BAITY, W. A.; MARSCHER, A. P.; WHEATON, W. A.	Nonthermal hard X-ray emission from the nucleus of NGC 1275

1981AdSpR...1..247H	0.344	00/1981	A
HUDSON, H. S.	X-ray and gamma-ray observations of a white-light flare

1981AdSpR...1..215N	0.344	00/1981	A
NOLAN, P. L.; CRUBER, D. E.; MATTESON, J. L.; PETERSON, L. E.; ROTHSCHILD, R. E.; DOTY, J. P.; LEVINE, A. M.; PRIMINI, F. A.	Rapid variability of 10-140 keV X-rays from Cygnus X-1

1981A81-26925.....B	0.344	00/1981	A
BOLDT, E.	The cosmic X-ray background

1980ApJ...242..857H	0.344	12/1980	A C S
HINTZEN, P.; SCOTT, J. S.; MCKEE, J. D.	The revised HEAO A-2 X-ray luminosity function for Abell clusters

1980ApJ...242..843M	0.344	12/1980	A R C
MCKEE, J. D.; MUSHOTZKY, R. F.; BOLDT, E. A.; HOLT, S. S.; MARSHALL, F. E.; PRAVDO, S. H.; SERLEMITSOS, P. J.	The HEAO A-2 survey of Abell clusters and the X-ray luminosity function

1980ApJ...242L.105V	0.344	12/1980	F C S
VAN BUREN, D.; CHARLES, P. A.; MASON, K. O.	Discovery of soft X-ray emission from V471 Tauri and UU Sagittae - Two highly evolved, low-mass binaries

1980MNRAS.193P..25G	0.344	11/1980	A F S
GRIFFITHS, R. E.; LAMB, D. Q.; WARD, M. J.; WILSON, A. S.; CHARLES, P. A.; THORSTENSEN, J.; MCHARDY, I. M.; LAWRENCE, A.	The optical identification of H2252-035 with a cataclysmic variable

1980ApJ...242L..19K	0.344	11/1980	A F C
KAHN, S. M.; CHARLES, P. A.; BOWYER, S.; BLISSETT, R. J.	X-ray line emission from the Cygnus Loop

1980ApJ...241.1070S	0.344	11/1980	A C S
SZKODY, P.; TUOHY, I. R.; CORDOVA, F. A.; STOCKMAN, H. S.; ANGEL, J. R. P.; WISNIEWSKI, W.	AM Herculis - Simultaneous X-ray, optical, and near-IR coverage

1980PASP...92..691H	0.344	11/1980	A F S
HELFAND, D. J.	A search for X-ray binary stars in their quiescent phase

1980Natur.287..516M	0.344	10/1980	A
MASON, K. O.; MIDDLEDITCH, J.; NELSON, J. E.; WHITE, N. E.	An optical burst from the star identified with the X-ray source 2S1254-690

1980ApJ...241...74M	0.344	10/1980	A S N
MUFSON, S. L.; WOOD, K.; MCNUTT, D. P.; YENTIS, D. J.; MEEKINS, J. F.; BYRAM, E. T.; CHUBB, T. A.; FRIEDMAN, H.; WISNIEWSKI, W. Z.	The continuous spectrum of Markarian 421 during periods of X-ray satellite observations

1980ApJ...241L..13H	0.344	10/1980	A F
HOLT, S. S.; MUSHOTZKY, R. F.; BOLDT, E. A.; SERLEMITSOS, P. J.; BECKER, R. H.; SZYMKOWIAK, A. E.; WHITE, N. E.	X-ray spectral constraints on the broad-line cloud geometry of NGC 4151

1980N80-33332.....H	0.344	09/1980	A
HOLT, S. S.	Spectroscopy of compact extragalactic X-ray sources

1980IAUC.3511....1W	0.344	09/1980	E
WARNER, B.; PATTERSON, J.; PRICE, C.; BOND, H.	H 2252-035

1980ApJ...240..619S	0.344	09/1980	A S
SKINNER, G. K.; SHULMAN, S.; SHARE, G.; EVANS, W. D.; MCNUTT, D.; MEEKINS, J.; SMATHERS, H.; WOOD, K.; YENTIS, D.; BYRAM, E. T.; CHUBB, T. A.; FRIEDMAN, H.	Observations of outbursts from the recurrent X-ray transient A0538-66 and LMC X-4

1980Natur.286..786R	0.344	08/1980	A S
ROTHSCHILD, R. E.; GRUBER, D. E.; KNIGHT, F. K.; NOLAN, P. L.; SOONG, Y.; LEVINE, A. M.; PRIMINI, F. A.; LEWIN, W. H. G.; WHEATON, W. A.	A high sensitivity determination of the hard X-ray spectrum of Sco X-1

1980ApJ...239..655W	0.344	07/1980	A S
WHITE, N. E.; BECKER, R. H.; PRAVDO, S. H.; BOLDT, E. A.; HOLT, S. S.; SERLEMITSOS, P. J.	The X-ray pulsars 4U 1145-61 and 1E 1145.1-6141

1980S&T....59..455C	0.344	06/1980	A
CASH, W.; CHARLES, P.	Stalking the Cygnus superbubble

1980MNRAS.191..887N	0.344	06/1980	A F
NULSEN, P. E. J.; FABIAN, A. C.	The large-scale structure of X-ray clusters of galaxies. II

1980IAUC.3482....2W	0.344	06/1980	E
WHITE, N. E.; HOLT, S. S.; BOLDT, E. A.; SERLEMITSOS, P. J.	HEAO Observations of X-Ray Sources

1980ApJ...238L..77S	0.344	06/1980	A F S
STERN, R. A.; WALKER, A. B. C.; CHARLES, P. A.; NUGENT, J. J.; GARMIRE, G. P.	An extended soft X-ray source in Delphinus - H2027+19

1980ApJ...238L..71C	0.344	06/1980	A F S
CASH, W.; CHARLES, P.; BOWYER, S.; WALTER, F.; GARMIRE, G.; RIEGLER, G.	The X-ray superbubble in Cygnus

1980ApJ...238L..59S	0.344	06/1980	A F S N
SCHWARTZ, D. A.; SCHWARZ, J.; TUCKER, W.	X-ray emission from compact groups of galaxies

1980AJ.....85..668M	0.344	06/1980	F
MARSCHER, A. P.; SHAFFER, D. B.	VLBI observations at 18 and 2.8 cm - 0133 + 47, 0735 + 178, OH 471, OQ 172, 1633 + 38, and NRAO 667 /2147 + 145/

1980Natur.285...26J	0.344	05/1980	A
JOHNSTON, M. D.; GRIFFITHS, R. E.; WARD, M. J.	Improved position and new optical candidate for A0538-66

1980MNRAS.191P..33S	0.344	05/1980	A F S
STICKLAND, D. J.; DWORETSKY, M. M.	Does Phi Herculis have a corona

1980IAUC.3472....2P	0.344	05/1980	E
PAKULL, M.	Optical Candidate for LMC X-1

1980N80-28290.....M	0.344	04/1980	A
MCKEE, J. D.; MUSHOTZKY, R. F.; BOLDT, E. A.; HOLT, S. S.; MARSHALL, F. E.; PRAVDO, S. H.; SERLEMITSOS, P. J.	The HEAO A-2 survey of Abell clusters and the X-ray luminosity function

1980ApJ...237L..11S	0.344	04/1980	A F S N
SNYDER, W. A.; DAVIDSEN, A. F.; WOOD, K.; KINZER, R.; SMATHERS, H.; SHULMAN, S.; MEEKINS, J. F.; YENTIS, D. J.; EVANS, W. D.; BYRAM, E. T.; CHUBB, T. A.; FRIEDMAN, H.; MARGON, B.	Rapid X-ray variability of PKS 2155-304

1980N80-23247.....B	0.344	03/1980	A
BOLDT, E. A.	The cosmic X-ray background

1980MNRAS.190..861D	0.344	03/1980	A F
DULDIG, M. L.; THOMAS, R. M.; GREENHILL, J. G.; MURDIN, P. G.; HAYNES, R. F.	Observations of the LMC X-1 region /MC76 and 77/ at 2 cm

1980ApJ...236..738J	0.344	03/1980	A
JOHNSON, H. M.; SCHNOPPER, H. W.; DELVAILLE, J. P.	SAS 3 and related observations of Abell 2029

1980ApJ...236..730M	0.344	03/1980	A
MITCHELL, R.; MUSHOTZKY, R.	HEAO A-2 observations of the X-ray spectra of the Centaurus and A1060 clusters of galaxies

1980ApJ...236L.131A	0.344	03/1980	A F S
ARMSTRONG, J. T.; JOHNSTON, M. D.; BRADT, H. V.; DOXSEY, R. E.; COWLEY, A. P.; GRIFFITHS, R. E.; HESSER, J. E.; SCHWARTZ, D. A.	Precise positions and optical search for the 38 second X-ray pulsar near OAO 1653-40 and upper limit on X-ray emission from V861 Scorpii

1980N80-28289.....W	0.344	02/1980	A
WORRALL, D. M.; BOLDT, E. A.; HOLT, S. S.; SERLEMITSOS, P. J.	The X-ray spectrum of QSO 0241+622

1980ApJ...236...58U	0.344	02/1980	A
ULMER, M. P.; CRUDDACE, R. G.; WOOD, K.; MEEKINS, J.; YENTIS, D.; EVANS, W. D.; SMATHERS, H. W.; BYRAM, E. T.; CHUBB, T. A.; FRIEDMAN, H.	A search for extended halos of hot gas in the Perseus, Virgo, and Coma Clusters

1980ApJ...236L..13G	0.344	02/1980	A F &