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VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
GRB030329 (RA = 10h44m50s.030, Dec = +21d31'18".15)
A very bright (initially, 12th mag) afterglow of gamma-ray burst
030329 appeared (vsnet-campaign-sn 590). B. Monard performed
time-series observation and reported that it was fading at a rate of
0.19CR/hour around JD 2452728.22 and 0.11CR/hour around .48
(vsnet-campaign-grb 15).
AK Cnc (RA = 08h55m21s.21, Dec = +11d18'14".7)
P. Schmeer reported that the SU UMa-type dwarf nova, AK Cnc
started an outburst on March 22 (13.5mag). The most recently
observed superoutbursts occurred in 2001 April and 2001 November
(vsnet-campaign-dn 3553, 3554).
BZ Cam (RA = 06h29m34s.49, Dec = +71d04'39".5)
Based on reported observations to VSNET, T. Kato reported that the
VY Scl-type cataclysmic variable, BZ Cam slightly faded. Further
observations are encouraged (vsnet-campaign-nl 110).
XTE J1550-564 (RA= 15h50m58s.68, Dec = -56d28'34".8)
According to IAUC 8100, the INTEGRAL satellite detected a new
outburst of the black hole binary and microquasar, XTE J1550-564.
The object was 150mCrab in the 15-40 keV band and 250mCrab in the
40-100 keV band on March 24.2-25.1 (vsnet-campaign-xray 205).
According to CBET #12, Would et al. found that the object is now
bright also in the optical range at V~18. Furthermore, they report
the detection of optical rapid variations, including a flare of
about 0.5mag lasting < 20s (vsnet-campaign-xray 207). B. Monard
confirmed the optical outburst to be 17.0CR mag on March 28
and 16.9CR mag on March 30 (vsnet-campaign-xray 208, 209). The
X-ray outburst was detected also with RXTE/PCA (vsnet-campaign-xray 210).
AD Men (RA = 06h04m28s.60, Dec = -71d25'15".6)
As reported by R. Stubbings on March 24, the dwarf nova AD Men is
now undergoing a bright outburst (14.0mag on March 24). This is the
first outburst of this star reported to VSNET. The reported
brightness surpasses the maximum value in the literature
(vsnet-campaign-dn 3555). In the light curve obtained by
B. Heathcote, there was no clear tendency of a fading within the 1.5
d. Although there seems to be modulations, the variation looks more
irregular than superhumps. The light curve suggests an SS Cyg-type
dwarf nova, although we definitely need more observation to draw a
firm conclusion (vsnet-campaign-dn 3560).
IGR J17464-3213 (RA = 17h46m.4, Dec= -32d13')
According to ATEL #132, Revnivtsev et al. reported their detection
of a new X-ray transient, IGR J17464-3213, with the INTEGRAL
satellite. They further reported that its spectrum suggests that
the source may be a black hole candidate. Follow-up observations
to search possible counterpart in other wavelengths are encouraged
(vsnet-campaign-xray 206).
(continuous targets)
SN 2003cg (RA = 10h14m15s.97, Dec = +03d28'02".5)
IAUC 8099 informed that the ESO team and the CfA team has revealed
that SN 2003cg was of type Ia near maximum on Mar. 25 UT but highly
reddened. The CfA team suggested that it can be subluminous event
(vsnet-campaign-sn 589).
SN 2003ch (RA = 07h17m57s.92, Dec = +09d41'34".9)
M. Salvo et al. reported that a spectrum on March 24.45 shows it
to be a Type Ia supernova. Cross correlation with a library of SN
Ia spectra indicates the SN is approximately 3 +/- 2 days before
maximum light, and at a redshift of z=0.025 (vsnet-campaign-sn 587, 588).
SN 2003ci (RA = 11h10m23s.83, Dec = +04d49'35".9)
M. Salvo et al. reported that a spectrum on March 25.52 shows it
to be a Type II supernova, approximately 3 weeks past explosion.
Weak Iron lines in the spectrum indicate a photospheric velocity of
6500 km/s. It seems brighter than normal one (vsnet-campaign-sn
586, 588).
SN 2003bn (RA = 10h02m35s.51, Dec = -21d10'54".5)
M. Salvo et al. reported that a spectrum on March 24.48 shows it
to be a Type II supernova, approximately 1 month past explosion.
The redshift of the host galaxy is cz=3800 km/s. Weak Iron lines in
the SN spectrum indicate a photospheric velocity of 5400 km/s
(vsnet-campaign-sn 587, 588).
NSV 10934 (RA = 18h40m52s.26, Dec = -83d43'10".24)
An outburst (12.6mag) was reported by R. Stubbings on March 24
(vsnet-campaign-dn 3556).
1RXP J113123+4322.5 (RA = 11h31m22s.426, Dec = +43d22'38".51)
A. Oksanen performed observation on March 25/26, and reported that
it was faint CV=16 and the light curve shows rapidly fading trend
with 0.5 magnitude superhumps (vsnet-campaign-dn 3559).
GZ Cnc (RA = 09h15m51s.70, Dec = +09d00'50".2)
An outburst was reported on March 23. It was still bright on
March 25 (vsnet-campaign-dn 3557).
RX J1155.4-5641 (RA = 11h55m27s.0, Dec = -56d41'53")
An outburst was reported by R. Stubbings. It was 14.4mag on March
22, then began brightening, and reached 12.6mag on March 25
(vsnet-campaign-dn 3558).
SN 2003cb (RA = 13h00m33s.25, Dec = -06d51'09".3)
M. Salvo et al. reported that a spectrum on March 24.64 shows it
to be a Type II supernova, approximately 2 months after
explosion. Weak lines in the SN spectrum indicate a photospheric
velocity of 3000 km/s (vsnet-campaign-sn 587, 588).
SN 2003bu (RA = 14h00m31s.45, Dec = -28d52'32".7)
M. Salvo et al. reported that a spectrum obtained on March 24.68
shows it to be a Type Ic supernova. Cross correlation with a library
of SN Ic spectra indicates the SN is approximately one week past
maximum light (vsnet-campaign-sn 587, 588).
*** Future schedule ***
V4641 Sgr: XMM-Newton observation
Start time: 2003-04-12 21:51:39 UT
End time : 2003-04-13 11:44:59 UT
Simultaneous observations are encouraged.
For more information, please contact to M. Uemura
uemura@kusastro.kyoto-u.ac.jp
[vsnet-campaign-xray 204]
eta Car: The next "shell event"/X-ray eclipse
M. Corcoran reported the event will occur this summer.
Coordinated ground-based observations of eta car along with the
X-ray observations would be really important.
For more information:
Latest X-ray light curve:
http://lheawww.gsfc.nasa.gov/users/corcoran/eta_car/etacar_rxte_lightcurve/
[vsnet-campaign-sdor 23, 24,
25, 26, 28, 29]
[vsnet-campaign-xray 172]
Light curve provided by S. Otero:
http://ar.geocities.com/varsao/Curva_Eta_Carinae.htm
[vsnet-campaign-sdor 22]
The 2003 Gamma Ray Burst conference
Hosted by Los Alamos,
in Santa Fe, New Mexico (USA), between September 8 and 12, 2003
http://grb2003.lanl.gov/
[vsnet-campaign-grb 13]
WEBT campaign on Mkn 421
M. Villata announced possible WEBT campaign on Mkn 421, in
December 2002 and February-March 2003, to be carried out during
multifrequency campaigns.
The relevant information on the MW campaign of December 2-16 is at
the VERITAS site <http://veritas.sao.arizona.edu> .
[vsnet-campaign-blazar 287]
[vsnet-campaign-blazar 288]
SUPERNOVAE (10 YEARS OF SN1993J)
22-26 April 2003, Valencia, Spain
Web site: http://vsnet.uv.es/2003supernovae/ [vsnet-campaign-sn 342]
[vsnet-campaign-sn 452]
[vsnet-campaign-sn 512]
*** General information ***
EE Cep
The 2003 eclipse is coming. A review of past eclipses, see:
http://xxx.lanl.gov/abs/astro-ph/0303547
[vsnet-campaign-ecl 65]
GRB030329
GCN web page:
http://gcn.gsfc.nasa.gov/gcn3_archive.html#tc1
[vsnet-campaign-sn 590]
NMO Campaign
see, [vsnet-campaign-mira 53]
(This summary can be cited.)
Regards,
Makoto Uemura
Return to the Powerful Daisaku
vsnet-adm@kusastro.kyoto-u.ac.jp
