Most of the visible matter in the Universe is ionized, so that cosmic magnetic fields are quite
easy to generate and due to the lack of magnetic monopoles hard to destroy. Magnetic fields …

A 1.49 GHz atlas of spiral galaxies with B(T) = +12 or less and delta = -45 deg ADS Classic is
now deprecated. It will be completely retired in October 2019. This page will automatically …

WATER-VAPOUR maser emission at 22.23508 GHz has been observed in star-forming
regions of our own galaxy and in the active nuclei of other galaxies1–5. Maser emission …

Using the all-sky ROSAT soft X-ray and 408 MHz radio continuum data, we show that the
North Polar Spur (NPS) and its western and southern counterspurs draw a giant dumbbell …

VLA observations of the very luminous extragalactic water masers in NGC 4258 and NGC
1068 constrain their spatial extent to less than 1.3 and 3.5 pc respectively at the center of …

A new way to locate corotation resonances in spiral galaxies ADS Classic is now
deprecated. It will be completely retired in October 2019. This page will automatically …

UGC galaxies in the declination band+ 5^ deg^< δ<+ 75^ deg^ were identified by position
coincidence with radio sources stronger than 25 mJy on the Green Bank 4.85 GHz sky …

We have obtained moderately deep radio continuum imaging at 18 and 22 cm with the
Westerbork array of 34 nearby galaxies drawn from the Spitzer SINGS and Starburst …

We estimate the accretion rate $\mathstrut {{\ucpmathaccent {M}{" 705F}}} $ onto the black
hole in the nucleus of NGC 4258. The result is model dependent. We find that a thin disk that …

The galaxy NGC 4258 displays strong spectral variability in its H_2_O maser emission
during a 7 year monitoring program. Variations of line strength and line velocity are …