On relativistic beam models

255

Abstracts

We discuss magnetic

the chemical

potential

of a non-zero

example.

It is shown

that

a sufficiently

low temperatures

and densities,

effect on electron

capture

Separators Fu-min

in the

Using

solar

magnetic

Ha

Soviet

Union,

plages and flare knots separator,

and

flares and magnetic

Department

We analysed angular oscillation

On

period

and

the

It is pointed at least QSOs.

in out that

one of the major (AAnS

1996,

On relativistic

that

models

beams

models

significantly 1997,

was low.

(AAnS of

Lin Qiao,

sunspot

the three

Han Yan-ben

number,

atmospheric We

found

el nifio events

the

in these

37, 443-448).

QSOs

Wang

Jia-qing

spectral

lines by the optical

Department

periodicity

in the redshift

of

window

is

distribution

AApS

The

1997,

Energy

according

test is proposed

result

& He Miao-than

Yunnan

of the test

as the apparent

transverse

using the numbers

of

Obserua-

is tentative,

velocity

of superluminal

because

of severe

is or

sources

observational

17, 13-20. Wu Mei, Song Li-ming,

Chinese

that

the size (photon

count)

and

uniform

in space

from the observed

density BATSE

of Sciences,

Academy

data,

distribution

of y-ray

in a simple

corrected

Yu Wen-fei,

Beijing

bursts

cosmological

for trigger

Li Ti-pei

& Li Yi

100039 calculated model

efficiency

on assuming

does

not

deviate

and dead time.

(AApS

17, 29-36).

The effect of spiral structure on the formation of giant molecular clouds & Song Guo-xuanshanghai We follow disk for 300Myr

Observatory,

the evolution and note

promotes

the formation

inter-arm

region.

A

of simple and accurate

Sciences, For

Nanjing

clouds

of very massive affected.

Jie

(AApS

& Wang

clouds, 1197,

of Sciences,

of mass

into larger

clouds.

Shanghai

structure,

while the number

Zhang

Tong-jie

200030

10’ MO each in a Toomre We find that

but these may subsequently

to the case of no spiral

MO is hardly

Zhang

Academy

of giant clouds in the arms,

Compared

105-lo6

Chun-yun,

basic

aggregation

in the number

set

Chinese

of 120 000

their

increase

Ma

the

100875

1981-1994.

1996,

that

the close link

650011

can be classified

A statistical

Physics,

candle

out that

at Ganyu

of the former

We found

Beijing

years

We point

13-16

37, 437442).

Li Zhi-an,

for the

Ott

field data maps.

1996,

& Hu

210008

thus confirming

University,

Xie Guang-zhong

Kunming

of r-ray bursts

It is shown

of day

the observed

&in Yi-ping,

Institute standard

activity

Normal

of the redshifted

cause

The size distribution of High

at the

241001

the restriction

with low and high redshifts. effects.

on 1990

magnetic

(AAnS

distribution

Wuhu,

of Sciences,

is not redshift-dependent. selection

period

stars,

37, 449-454).

Academy

Relativistic

taken

in the data of solar flux, relative

redshift

factors

beam

Chinese

the

University,

Normal

in solar

40 and 60d.

significantly

Song Mu-tao

Nanjing

in the daily magnetic

in the length

between

6309

and solar

Beijing

when the oscillation

periodicity Anhui

changes

varied

all happened

Physics,

tory,

the 50d oscillation

momentum

NOAA

field reconnection.

of Astronomy,

rate

of neutron

Li Bi-qiang,

of Sciences,

at, or close to the separator,

El nifio events and the 50 d oscillation and Zhao Juan

flare sites

the

the field separator

the capture

3’7, 430-436)

Observatory

are located

in a strong

33S is taken as a specific

G) on the surface

Academy

region

Mountain

we determined

1966,

Chinese

of the active

of Purple

bright

between

field

Observatory,

filtergrams

Station

(AA&

gas embedded

potential.

field can decrease

strong

nil.

electron

screening

but for the fields (10s-10’3

is almost

Mountain

Purple

Observing

years

temperature

field and the effect of the field on the electron

the effect

the spiral

galactic structure

disintegrate

of the spiral

of clouds with masses

in the

arms

is an

in the range

17, 50-56.

formulae

for gyrosynchrotron

Xin-dongPurple

Mountain

radiation

Observatory,

Chinese

Zhou

Ai-hua,

Academy

of

210008

two of the three

indices

that

figure

in usual

approximate

formulae

for emissivity

and