38 citations · 87 across the 8 of their papers we have counts for
8 papers
A Galaxy Cluster Near NGC 720
H. Arp
The galaxy cluster RXJ 0152.7-1357 is emitting X-rays at the high rate of 148 counts . It would be one of the most luminous X-ray clusters known if it is at its redshift d…
Periodicities of Quasar Redshifts in Large Area Surveys
H. Arp, C. Fulton, D. Roscoe
We test the periodicity of quasar redshifts in the 2dF and SDSS surveys. In the overall surveys redshift peaks are already apparent in the brighter quasars. But by analyzing sample…
The double radio source 3C343.1: A galaxy-QSO pair with very different redshifts
H. Arp, E. M. Burbidge, G. Burbidge
The strong radio source 3C343.1 consists of a galaxy and a QSO separated by no more than about 0.25 arcsec. The chance of this being an accidental superposition is conservatively 1…
NGC 3628: Ejection Activity Associated with Quasars
H. Arp, E. M. Burbidge, Y. Chu +3
NGC3628 is a well-studied starburst/low level AGN galaxy in the Leo Triplet noted for its extensive outgassed plumes of neutral hydrogen. QSOs are shown to be concentrated around N…
A possible X-ray jet from the starburst galaxy NGC6217
W. Pietsch, H. Arp
Deep ROSAT PSPC and HRI observations of the nuclear starburst, UV flat spectrum spiral NGC6217 reveal a jet-like X-ray filament extending out 2.7' (18.8 kpc) to the SW of the galax…
Arguments for a Hubble Constant near = 55
H. Arp
Recent analyses of Cepheid distances to spiral galaxies have led to an announcement of a Hubble constant of km/sec/Mpc. The new Cepheid distances, however, show th…